Python django.contrib.admin.ModelAdmin() Examples

def get_excluded_fields(self):
        """
        Check if we have no excluded fields defined as we never want to
        show those (to any user)
        """
        if self.exclude is None:
            exclude = []
        else:
            exclude = list(self.exclude)

        # logic taken from: django.contrib.admin.options.ModelAdmin#get_form
        if self.exclude is None and hasattr(
                self.form, '_meta') and self.form._meta.exclude:
            # Take the custom ModelForm's Meta.exclude into account only
            # if the ModelAdmin doesn't define its own.
            exclude.extend(self.form._meta.exclude)

        return exclude 

def auto_configure_admin(model):
    '''
    Automatic configuration, let's make this smarter
    in the future
    '''
    from django.contrib import admin
    from django.db import models
    fields = model._meta.fields
    field_names = [f.name for f in fields]
    list_display = [f for f in field_names if f not in (
        'updated_at', 'created_at')]
    fields_in_list_display = list_display[:7]
    list_editable_fields = [
        f.name for f in fields if isinstance(f, models.IntegerField)]
    search_fields_list = [f.name for f in fields if isinstance(
        f, (models.TextField, models.CharField))]

    class StandardAdmin(admin.ModelAdmin):
        list_display = fields_in_list_display
        list_editable = list_editable_fields
        search_fields = search_fields_list
    return StandardAdmin 

def auto_admin(model_pool):
    '''一行注册admin'''
    for md_name in dir(model_pool):
        md = getattr(model_pool, md_name)

        if isinstance(md, models.base.ModelBase):
            tmp = []
            for name, field in md.__dict__.items():
                if isinstance(field, models.query_utils.DeferredAttribute):
                    tmp.append(name)

            class AutoAdmin(admin.ModelAdmin):
                list_display = tmp

            try:
                admin.site.register(md, AutoAdmin)
            except admin.sites.AlreadyRegistered:
                pass 

def formfield_for_dbfield(self, db_field, request, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            if not HAS_GDAL and db_field.srid != self.map_srid:
                raise ImproperlyConfigured(
                    "Map SRID is %s and SRID of `%s` is %s. GDAL must be "
                    "installed to perform the transformation."
                    % (self.map_srid, db_field, db_field.srid)
                )
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, request, **kwargs) 

def _set_experience(db_name, human_name, modeladmin, request, queryset):
    """
    A django action which will set all selected schedules to the supplied experience.
    The intended usage is with functools.partial to generate the action for each experience type
    dynamically.

    Arguments:
        db_name: the database name of the experience being selected
        human_name: the human name of the experience being selected
        modeladmin: The ModelAdmin subclass, passed by django as part of the standard Action interface
        request: The current request, passed by django as part of the standard Action interface
        queryset: The queryset selecting schedules, passed by django as part of the standard Action interface
    """
    rows_updated = models.ScheduleExperience.objects.filter(
        schedule__in=list(queryset)
    ).update(
        experience_type=db_name
    )
    modeladmin.message_user(request, "{} schedule(s) were changed to use the {} experience".format(rows_updated, human_name))


# Generate a list of all "set_experience_to_X" actions 

def reregister(model_class):
    """
    Remove the existing admin, and register it anew with the given ModelAdmin

    Usage:

        @reregister(ModelClass)
        class ModelClassAdmin(ModelAdmin):
            pass
    """
    def decorator(cls):
        """
        The actual decorator that does the work.
        """
        site.unregister(model_class)
        site.register(model_class, cls)
        return cls

    return decorator 

def test_extends_model_admin(self):
        """
        The class should extend django.contrib.admin.ModelAdmin
        """
        self.assertTrue(issubclass(OmniModelFormAdmin, ModelAdmin)) 

def test_extends_model_admin(self):
        """
        The class should extend django.contrib.admin.ModelAdmin
        """
        self.assertTrue(issubclass(OmniFormAdmin, ModelAdmin)) 

def get_readonly_fields(self, request, obj=None):
        readonly =  admin.ModelAdmin.get_readonly_fields(self, request, obj=obj)
        if obj and obj.status == obj.RETURNED:
            readonly= ("user", "status", "updated_datetime",
                "reserved_start_date", "reserved_end_date",
                "list_of_products")
        return readonly 

def get_queryset(self, request):
        queryset = admin.ModelAdmin.get_queryset(self, request)
        queryset = queryset.exclude(status=Reservation.BUILDING)
        return queryset 

def save_model(self, request, obj, form, change):
        differ_obj = []
        old_status, product_change = -1, False
        if change:
            old_status = obj.__class__.objects.filter(
                pk=obj.pk).values_list('status')[0][0]
        dev = admin.ModelAdmin.save_model(self, request, obj, form, change)
        if 'djreservation_product_list' in request.POST:
            product_pks = request.POST.getlist("djreservation_product_list")
            old_pks = list(map(lambda x: str(x[0]),
                               obj.product_set.all().filter(
                borrowed=True).values_list("pk")))
            differ_obj = different(product_pks, old_pks)
            if any(differ_obj):
                obj.product_set.all().exclude(
                    pk__in=product_pks).update(borrowed=False)

                obj.product_set.all().filter(
                    pk__in=product_pks).update(borrowed=True)
                product_change = True

        change_status = int(old_status) != obj.status
        if product_change or change_status:
            #            send_reservation_email(obj, request.user)
            proccess_reservation(obj, differ_obj, change_status)
        return dev 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register_all(models, admin_class=admin.ModelAdmin):
    for attr in dir(models):
        attr = getattr(models, attr, None)
        if isinstance(attr, type):
            if issubclass(attr, Model) and not attr._meta.abstract:
                try:
                    admin.site.register(attr, admin_class)
                except admin.sites.AlreadyRegistered:
                    pass 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            request = kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def check(self, app_configs):
        """
        Run the system checks on all ModelAdmins, except if they aren't
        customized at all.
        """
        if app_configs is None:
            app_configs = apps.get_app_configs()
        app_configs = set(app_configs)  # Speed up lookups below

        errors = []
        modeladmins = (o for o in self._registry.values() if o.__class__ is not ModelAdmin)
        for modeladmin in modeladmins:
            if modeladmin.model._meta.app_config in app_configs:
                errors.extend(modeladmin.check())
        return errors 

def formfield_for_dbfield(self, db_field, request, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, request, **kwargs) 

def register(*models, site=None):
    """
    Register the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    The `site` kwarg is an admin site to use instead of the default admin site.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site as default_site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = site or default_site

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def check(self, app_configs):
        """
        Run the system checks on all ModelAdmins, except if they aren't
        customized at all.
        """
        if app_configs is None:
            app_configs = apps.get_app_configs()
        app_configs = set(app_configs)  # Speed up lookups below

        errors = []
        modeladmins = (o for o in self._registry.values() if o.__class__ is not ModelAdmin)
        for modeladmin in modeladmins:
            if modeladmin.model._meta.app_config in app_configs:
                errors.extend(modeladmin.check())
        return errors 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Register the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, use ModelAdmin (the default admin
        options). If keyword arguments are given -- e.g., list_display --
        apply them as options to the admin class.

        If a model is already registered, raise AlreadyRegistered.

        If a model is abstract, raise ImproperlyConfigured.
        """
        admin_class = admin_class or ModelAdmin
        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Create a new ModelAdmin class which inherits from the original and
        the above and register all models with that
        """
        SETTINGS_MODELS = getattr(
            settings, 'ADMIN_VIEW_PERMISSION_MODELS', None)

        models = model_or_iterable
        if not isinstance(model_or_iterable, (tuple, list)):
            models = tuple([model_or_iterable])

        is_user_model = settings.AUTH_USER_MODEL in [
            get_model_name(i) for i in models]

        if SETTINGS_MODELS or (SETTINGS_MODELS is not None and len(
                SETTINGS_MODELS) == 0):
            for model in models:
                model_name = get_model_name(model)
                if model_name in SETTINGS_MODELS:
                    admin_class = self._get_admin_class(
                        admin_class, is_user_model)

                super(AdminViewPermissionAdminSite, self).register(
                    [model], admin_class, **options)
        else:
            admin_class = self._get_admin_class(admin_class, is_user_model)
            super(AdminViewPermissionAdminSite, self).register(
                model_or_iterable, admin_class, **options) 

def test_testapp_modeladmin_override(self):
        for model in admin.site._registry:
            assert isinstance(
                admin.site._registry[model], AdminViewPermissionModelAdmin)
            assert isinstance(
                admin.site._registry[model], admin.ModelAdmin) 

def test_register__2(self):
        modeladmin1 = type(str('TestModelAdmin1'), (admin.ModelAdmin, ), {})
        self.admin_site.register(TestModel1, modeladmin1)
        assert isinstance(self.admin_site._registry[TestModel1],
                          AdminViewPermissionModelAdmin)
        assert isinstance(self.admin_site._registry[TestModel1],
                          modeladmin1) 

def test_register__4(self):
        modeladmin1 = type(str('TestModelAdmin1'), (admin.ModelAdmin, ), {})
        self.admin_site.register(TestModel1, modeladmin1)
        assert isinstance(self.admin_site._registry[TestModel1],
                          AdminViewPermissionModelAdmin)
        assert isinstance(self.admin_site._registry[TestModel1],
                          modeladmin1) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(*models, site=None):
    """
    Register the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    The `site` kwarg is an admin site to use instead of the default admin site.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site as default_site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = site or default_site

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def check(self, app_configs):
        """
        Run the system checks on all ModelAdmins, except if they aren't
        customized at all.
        """
        if app_configs is None:
            app_configs = apps.get_app_configs()
        app_configs = set(app_configs)  # Speed up lookups below

        errors = []
        modeladmins = (o for o in self._registry.values() if o.__class__ is not ModelAdmin)
        for modeladmin in modeladmins:
            if modeladmin.model._meta.app_config in app_configs:
                errors.extend(modeladmin.check())
        return errors 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Register the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, use ModelAdmin (the default admin
        options). If keyword arguments are given -- e.g., list_display --
        apply them as options to the admin class.

        If a model is already registered, raise AlreadyRegistered.

        If a model is abstract, raise ImproperlyConfigured.
        """
        admin_class = admin_class or ModelAdmin
        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def check(self, app_configs):
        """
        Run the system checks on all ModelAdmins, except if they aren't
        customized at all.
        """
        if app_configs is None:
            app_configs = apps.get_app_configs()
        app_configs = set(app_configs)  # Speed up lookups below

        errors = []
        modeladmins = (o for o in self._registry.values() if o.__class__ is not ModelAdmin)
        for modeladmin in modeladmins:
            if modeladmin.model._meta.app_config in app_configs:
                errors.extend(modeladmin.check())
        return errors 

def get_path_admin(use_site=False, use_subdomains=False):
    list_display = ['_path']
    search_fields = ['_path']
    list_filter = []
    if use_site:
        list_display.append('_site')
        list_filter.append('_site')
    if use_subdomains:
        list_display.append('_subdomain')
    return type('PathMetadataAdmin', (admin.ModelAdmin, ), {
        'list_display': tuple(list_display),
        'list_filter': tuple(list_filter),
        'search_fields': tuple(search_fields)
    }) 

def get_model_instance_admin(use_site=False, use_subdomains=False):
    list_display = ['_content_type', '_object_id', '_path']
    search_fields = ['_path', '_content_type__name']
    list_filter = []
    if use_site:
        list_display.append('_site')
        list_filter.append('_site')
    if use_subdomains:
        list_display.append('_subdomain')
    return type('ModelInstanceMetadataAdmin', (admin.ModelAdmin,), {
        'list_display': tuple(list_display),
        'list_filter': tuple(list_filter),
        'search_fields': tuple(search_fields)
    }) 

def get_model_admin(use_site=False, use_subdomains=False):
    list_display = ['_content_type']
    search_fields = ['_content_type__name']
    list_filter = []
    if use_site:
        list_display.append('_site')
        list_filter.append('_site')
    if use_subdomains:
        list_display.append('_subdomain')
    return type('ModelMetadataAdmin', (admin.ModelAdmin,), {
        'list_display': tuple(list_display),
        'list_filter': tuple(list_filter),
        'search_fields': tuple(search_fields)
    }) 

def get_view_admin(use_site=False, use_subdomains=False):
    list_display = ['_view']
    search_fields = ['_view']
    list_filter = []
    if use_site:
        list_display.append('_site')
        list_filter.append('_site')
    if use_subdomains:
        list_display.append('_subdomain')
    return type('ViewMetadataAdmin', (admin.ModelAdmin,), {
        'list_display': tuple(list_display),
        'list_filter': tuple(list_filter),
        'search_fields': tuple(search_fields)
    }) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def register(*models, site=None):
    """
    Register the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    The `site` kwarg is an admin site to use instead of the default admin site.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site as default_site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = site or default_site

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def check(self, app_configs):
        """
        Run the system checks on all ModelAdmins, except if they aren't
        customized at all.
        """
        if app_configs is None:
            app_configs = apps.get_app_configs()
        app_configs = set(app_configs)  # Speed up lookups below

        errors = []
        modeladmins = (o for o in self._registry.values() if o.__class__ is not ModelAdmin)
        for modeladmin in modeladmins:
            if modeladmin.model._meta.app_config in app_configs:
                errors.extend(modeladmin.check())
        return errors 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def delete_selected(modeladmin, request, queryset):
    for obj in queryset:
        obj.delete()


# Model admin classes

# This subclass of Django ModelAdmin contains settings that are
# needed in all my model admin classes 

def formfield_for_dbfield(self, db_field, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing GeometryFields.
        """
        if isinstance(db_field, models.GeometryField):
            request = kwargs.pop('request', None)
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs) 

def register(*models, site=None):
    """
    Register the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    The `site` kwarg is an admin site to use instead of the default admin site.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site as default_site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = site or default_site

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def has_change_permission(self, request, obj=None):
        return (request.method in ['GET', 'HEAD'] and
                super(admin.ModelAdmin, self).has_change_permission(
                    request, obj)) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def deploy_action(self, request, canary):
        canary = CanaryItem.objects.get(identifier=canary)
        canary.redeploy_remote_files()

        return admin.ModelAdmin.response_change(self, request, canary) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def check(self, app_configs):
        """
        Run the system checks on all ModelAdmins, except if they aren't
        customized at all.
        """
        if app_configs is None:
            app_configs = apps.get_app_configs()
        app_configs = set(app_configs)  # Speed up lookups below

        errors = []
        modeladmins = (o for o in self._registry.values() if o.__class__ is not ModelAdmin)
        for modeladmin in modeladmins:
            if modeladmin.model._meta.app_config in app_configs:
                errors.extend(modeladmin.check())
        return errors 

def formfield_for_dbfield(self, db_field, request, **kwargs):
        """
        Overloaded from ModelAdmin so that an OpenLayersWidget is used
        for viewing/editing 2D GeometryFields (OpenLayers 2 does not support
        3D editing).
        """
        if isinstance(db_field, models.GeometryField) and db_field.dim < 3:
            # Setting the widget with the newly defined widget.
            kwargs['widget'] = self.get_map_widget(db_field)
            return db_field.formfield(**kwargs)
        else:
            return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, request, **kwargs) 

def register(*models, **kwargs):
    """
    Registers the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    A kwarg of `site` can be passed as the admin site, otherwise the default
    admin site will be used.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = kwargs.pop('site', site)

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def register(*models, site=None):
    """
    Register the given model(s) classes and wrapped ModelAdmin class with
    admin site:

    @register(Author)
    class AuthorAdmin(admin.ModelAdmin):
        pass

    The `site` kwarg is an admin site to use instead of the default admin site.
    """
    from django.contrib.admin import ModelAdmin
    from django.contrib.admin.sites import site as default_site, AdminSite

    def _model_admin_wrapper(admin_class):
        if not models:
            raise ValueError('At least one model must be passed to register.')

        admin_site = site or default_site

        if not isinstance(admin_site, AdminSite):
            raise ValueError('site must subclass AdminSite')

        if not issubclass(admin_class, ModelAdmin):
            raise ValueError('Wrapped class must subclass ModelAdmin.')

        admin_site.register(models, admin_class=admin_class)

        return admin_class
    return _model_admin_wrapper 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_class.check(model))

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                if admin_class is not ModelAdmin and settings.DEBUG:
                    admin_class.validate(model)

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_class.check(model))

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_class.check(model))

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_class.check(model))

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_class.check(model))

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                admin_obj = admin_class(model, self)
                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_obj.check())

                self._registry[model] = admin_obj 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_class.check(model))

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register_seo_admin(admin_site, metadata_class):
    """ Register the backends specified in Meta.backends with the admin """
    use_sites = metadata_class._meta.use_sites
    use_subdomains = metadata_class._meta.use_subdomains

    path_admin = get_path_admin(use_sites, use_subdomains)
    model_instance_admin = get_model_instance_admin(use_sites, use_subdomains)
    model_admin = get_model_admin(use_sites, use_subdomains)
    view_admin = get_view_admin(use_sites, use_subdomains)

    def get_list_display():
        return tuple(name for name, obj in metadata_class._meta.elements.items()
                     if obj.editable)

    backends = metadata_class._meta.backends

    if 'model' in backends:
        class ModelAdmin(model_admin):
            form = get_model_form(metadata_class)
            list_display = model_admin.list_display + get_list_display()

        _register_admin(admin_site, metadata_class._meta.get_model('model'), ModelAdmin)

    if 'view' in backends:
        class ViewAdmin(view_admin):
            form = get_view_form(metadata_class)
            list_display = view_admin.list_display + get_list_display()

        _register_admin(admin_site, metadata_class._meta.get_model('view'), ViewAdmin)

    if 'path' in backends:
        class PathAdmin(path_admin):
            form = get_path_form(metadata_class)
            list_display = path_admin.list_display + get_list_display()

        _register_admin(admin_site, metadata_class._meta.get_model('path'), PathAdmin)

    if 'modelinstance' in backends:
        class ModelInstanceAdmin(model_instance_admin):
            form = get_modelinstance_form(metadata_class)
            list_display = model_instance_admin.list_display + get_list_display()

        _register_admin(admin_site, metadata_class._meta.get_model('modelinstance'), ModelInstanceAdmin) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Register the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, use ModelAdmin (the default admin
        options). If keyword arguments are given -- e.g., list_display --
        apply them as options to the admin class.

        If a model is already registered, raise AlreadyRegistered.

        If a model is abstract, raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                admin_obj = admin_class(model, self)
                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_obj.check())

                self._registry[model] = admin_obj 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        # Don't import the humongous validation code unless required
        if admin_class and settings.DEBUG:
            from django.contrib.admin.validation import validate
        else:
            validate = lambda model, adminclass: None

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured('The model %s is abstract, so it '
                      'cannot be registered with admin.' % model.__name__)

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # If we got **options then dynamically construct a subclass of
            # admin_class with those **options.
            if options:
                # For reasons I don't quite understand, without a __module__
                # the created class appears to "live" in the wrong place,
                # which causes issues later on.
                options['__module__'] = __name__
                admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

            # Validate (which might be a no-op)
            validate(admin_class, model)

            # Instantiate the admin class to save in the registry
            self._registry[model] = admin_class(model, self) 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                admin_obj = admin_class(model, self)
                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_obj.check())

                self._registry[model] = admin_obj 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                self._registry[model] = admin_class(model, self) 

def return_admin_form(class_name):
    """
    Return the model admin form
    :param class_name: class name of the model
    :return: admin form class
    """

    class Form(ModelForm):
        """
        ModelForm corresponding to the model
        """

        entity_content_object = forms.CharField(widget=forms.Select)

        def save(self, *args, **kwargs):
            """
            Override `save` to pipe value of dropdown list to
            `content_object_id`
            """

            self.instance.entity_object_id = (
                self.cleaned_data['entity_content_object']
            )
            return super(Form, self).save(*args, **kwargs)

        class Meta:
            """
            Meta class for Form
            """

            model = admin_form_dict[class_name]
            fields = '__all__'

    class FormAdmin(ModelAdmin):
        """
        Admin form corresponding to the model
        """

        form = Form
        exclude = ['entity_object_id']

    return FormAdmin 

def register(self, model_or_iterable, admin_class=None, **options):
        """
        Registers the given model(s) with the given admin class.

        The model(s) should be Model classes, not instances.

        If an admin class isn't given, it will use ModelAdmin (the default
        admin options). If keyword arguments are given -- e.g., list_display --
        they'll be applied as options to the admin class.

        If a model is already registered, this will raise AlreadyRegistered.

        If a model is abstract, this will raise ImproperlyConfigured.
        """
        if not admin_class:
            admin_class = ModelAdmin

        if isinstance(model_or_iterable, ModelBase):
            model_or_iterable = [model_or_iterable]
        for model in model_or_iterable:
            if model._meta.abstract:
                raise ImproperlyConfigured(
                    'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
                )

            if model in self._registry:
                raise AlreadyRegistered('The model %s is already registered' % model.__name__)

            # Ignore the registration if the model has been
            # swapped out.
            if not model._meta.swapped:
                # If we got **options then dynamically construct a subclass of
                # admin_class with those **options.
                if options:
                    # For reasons I don't quite understand, without a __module__
                    # the created class appears to "live" in the wrong place,
                    # which causes issues later on.
                    options['__module__'] = __name__
                    admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)

                # Instantiate the admin class to save in the registry
                admin_obj = admin_class(model, self)
                if admin_class is not ModelAdmin and settings.DEBUG:
                    system_check_errors.extend(admin_obj.check())

                self._registry[model] = admin_obj