Python django.urls.Resolver404() Examples

def process_template_response(self, request, response):
        try:
            url = resolve(request.path_info)
        except Resolver404:
            return response
        if not url.app_name == 'admin' and \
                url.url_name not in ['index', 'app_list']:
            # current view is not a django admin index
            # or app_list view, bail out!
            return response

        try:
            app_list = response.context_data['app_list']
        except KeyError:
            # there is no app_list! nothing to reorder
            return response

        self.init_config(request, app_list)
        ordered_app_list = self.get_app_list()
        response.context_data['app_list'] = ordered_app_list
        return response 

def test_nonmatching_urls(self):
        test_data = (
            ('int', {'-1', 'letters'}),
            ('str', {'', '/'}),
            ('path', {''}),
            ('slug', {'', 'stars*notallowed'}),
            ('uuid', {
                '',
                '9da9369-838e-4750-91a5-f7805cd82839',
                '39da9369-838-4750-91a5-f7805cd82839',
                '39da9369-838e-475-91a5-f7805cd82839',
                '39da9369-838e-4750-91a-f7805cd82839',
                '39da9369-838e-4750-91a5-f7805cd8283',
            }),
        )
        for url_name, url_suffixes in test_data:
            for url_suffix in url_suffixes:
                url = '/%s/%s/' % (url_name, url_suffix)
                with self.subTest(url=url), self.assertRaises(Resolver404):
                    resolve(url) 

def test_nonmatching_urls(self):
        test_data = (
            ('int', {'-1', 'letters'}),
            ('str', {'', '/'}),
            ('path', {''}),
            ('slug', {'', 'stars*notallowed'}),
            ('uuid', {
                '',
                '9da9369-838e-4750-91a5-f7805cd82839',
                '39da9369-838-4750-91a5-f7805cd82839',
                '39da9369-838e-475-91a5-f7805cd82839',
                '39da9369-838e-4750-91a-f7805cd82839',
                '39da9369-838e-4750-91a5-f7805cd8283',
            }),
        )
        for url_name, url_suffixes in test_data:
            for url_suffix in url_suffixes:
                url = '/%s/%s/' % (url_name, url_suffix)
                with self.subTest(url=url), self.assertRaises(Resolver404):
                    resolve(url) 

def count_urls(self, file_obj):
        urls = {}
        non_match = set()
        for url in file_obj:
            url = url.strip()
            try:
                name = resolve(url).url_name
            except Resolver404:
                non_match.add(url)
                continue

            if name in urls:
                urls[name] = urls[name] + 1
            else:
                urls[name] = 1

        return urls, non_match 

def get_node_template_name(node):
    try:
        view = get_view_from_url(node.get_absolute_url())
    except (AttributeError, Resolver404):
        return settings.DJANGOCMS_SPA_VUE_JS_ERROR_404_TEMPLATE
    if view.__module__ == 'cms.views':
        template = node.attr.get('template')
        if template:
            return template
        else:
            try:
                return node.attr.get('cms_page').get_template()
            except:
                return settings.DJANGOCMS_SPA_VUE_JS_ERROR_404_TEMPLATE
    else:
        try:
            return view.template_name
        except AttributeError:
            return settings.DJANGOCMS_SPA_DEFAULT_TEMPLATE 

def resolved(self):
        resolved = None
        path = self.kwargs.get('path', '')
        if path:
            try:
                resolved = resolve('/editor/'+path+'/')
            except Resolver404:
                pass

        if not resolved:
            try:
                resolved = resolve('/editor/'+path)
            except Resolver404:
                pass

        self.request.sub_resolver_match = resolved

        return resolved 

def test_url_resolution(self):
        """ make sure that the url is resolved as expected """
        resolver = resolve('/')
        self.assertEqual(resolver.view_name, 'do_search')

        with self.assertRaises(Resolver404):
            resolver = resolve('/blah')

        resolver = resolve('/edX/DemoX/Demo_Course')
        self.assertEqual(resolver.view_name, 'do_search')
        self.assertEqual(resolver.kwargs['course_id'], 'edX/DemoX/Demo_Course') 

def test_resolve_value_error_means_no_match(self):
        @DynamicConverter.register_to_python
        def raises_value_error(value):
            raise ValueError()
        with self.assertRaises(Resolver404):
            resolve('/dynamic/abc/') 

def test_resolve_value_error_means_no_match(self):
        @DynamicConverter.register_to_python
        def raises_value_error(value):
            raise ValueError()
        with self.assertRaises(Resolver404):
            resolve('/dynamic/abc/') 

def get_success_url(self):
        referer = self.request.META.get("HTTP_REFERER", "/user/home/")
        try:
            url_name = resolve(referer).url_name
            self.success_views.index(url_name)
            return referer
        except (ValueError, Resolver404):
            return reverse("user-home") 

def assertPathDoesNotRedirectToTrailingSlash(test, path):
    try:
        resolve(path)
    except Resolver404:
        test.fail('The path {} cannot be found'.format(path))

    response = test.client.get(path)

    if (type(response).__name__ == 'HttpResponsePermanentRedirect' or
       type(response).__name__ == 'HttpResponsePermanentRedirect'):
       test.assertNotEqual(response.url, path + "/") 

def view_name(self):
        try:
            resolved = resolve(self.request.path_info)
        except Resolver404:
            return None

        return resolved.view_name 

def view_name(self):
        try:
            resolved = resolve(self.request.path_info)
        except Resolver404:
            return None

        return resolved.view_name 

def to_internal_value(self, data):
        request = self.context.get('request', None)
        try:
            http_prefix = data.startswith(('http:', 'https:'))
        except AttributeError:
            self.fail('incorrect_type', data_type=type(data).__name__)

        if http_prefix:
            # If needed convert absolute URLs to relative path
            data = urlparse.urlparse(data).path
            prefix = get_script_prefix()
            if data.startswith(prefix):
                data = '/' + data[len(prefix):]

        data = uri_to_iri(data)

        try:
            match = resolve(data)
        except Resolver404:
            self.fail('no_match')

        try:
            expected_viewname = request.versioning_scheme.get_versioned_viewname(
                self.view_name, request
            )
        except AttributeError:
            expected_viewname = self.view_name

        if match.view_name != expected_viewname:
            self.fail('incorrect_match')

        try:
            return self.get_object(match.view_name, match.args, match.kwargs)
        except (ObjectDoesNotExist, TypeError, ValueError):
            self.fail('does_not_exist') 

def get_node_route_for_app_model(request, node, route_data):
    # Set name and component of the route.
    route_data['component'] = node.attr.get('component')
    route_data['name'] = node.attr.get('vue_js_router_name')

    # Add the link to fetch the data from the API.
    route_data['api']['fetch'] = {
        'url': node.attr.get('fetch_url'),
    }

    try:
        request_url_name = resolve(request.path).url_name
        node_url_name = resolve(node.get_absolute_url()).url_name
    except Resolver404:
        resolver_match = False
    else:
        resolver_match = request_url_name == node_url_name

    is_selected_node = request.path == node.get_absolute_url() or resolver_match
    if is_selected_node:
        # We need to prepare the initial structure of the fetched data. The actual data is added by the view.
        route_data['api']['fetched'] = {
            'response': {
                'data': {}
            }
        }
        route_data['params'] = node.attr.get('url_params', {})

    meta_id = node.attr.get('id')
    if meta_id:
        route_data['meta'] = {
            'id': meta_id
        }

    route_data['path'] = node.get_absolute_url()
    return route_data 

def add_preserved_filters(context, url, popup=False, to_field=None):
    opts = context.get('opts')
    preserved_filters = context.get('preserved_filters')

    parsed_url = list(urlparse(url))
    parsed_qs = dict(parse_qsl(parsed_url[4]))
    merged_qs = dict()

    if opts and preserved_filters:
        preserved_filters = dict(parse_qsl(preserved_filters))

        match_url = '/%s' % url.partition(get_script_prefix())[2]
        try:
            match = resolve(match_url)
        except Resolver404:
            pass
        else:
            current_url = '%s:%s' % (match.app_name, match.url_name)
            changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name)
            if changelist_url == current_url and '_changelist_filters' in preserved_filters:
                preserved_filters = dict(parse_qsl(preserved_filters['_changelist_filters']))

        merged_qs.update(preserved_filters)

    if popup:
        from django.contrib.admin.options import IS_POPUP_VAR
        merged_qs[IS_POPUP_VAR] = 1
    if to_field:
        from django.contrib.admin.options import TO_FIELD_VAR
        merged_qs[TO_FIELD_VAR] = to_field

    merged_qs.update(parsed_qs)

    parsed_url[4] = urlencode(merged_qs)
    return urlunparse(parsed_url) 

def _resolve_url_to_asset_or_collection(item_path):
    if item_path.startswith(('http', 'https')):
        item_path = urlparse(item_path).path
    try:
        match = resolve(item_path)
    except Resolver404:
        # If the app is mounted in uWSGI with a path prefix, try to resolve
        # again after removing the prefix
        match = resolve(remove_string_prefix(item_path, settings.KPI_PREFIX))

    uid = match.kwargs.get('uid')
    if match.url_name == 'asset-detail':
        return 'asset', Asset.objects.get(uid=uid)
    elif match.url_name == 'collection-detail':
        return 'collection', Collection.objects.get(uid=uid) 

def get_resolver_matches_chain(request, data=None):
    """Walk the current request URL path up to the top, attempting to resolve along the way
    """
    from django.urls import Resolver404
    from django.urls import resolve
    resolver_matches_chain = []
    path = request.path
    resolver_matches_chain.append((path, request.resolver_match,))
    while path:
        try:
            path = path[:path.rindex('/')]
            resolver_match = resolve(path)
            resolver_matches_chain.append((path, resolver_match))
        except Resolver404:
            # could not resolve without '/'
            path_with_slash = path + '/'
            if request.path != path_with_slash:
                try:
                    resolver_match = resolve(path_with_slash)
                    resolver_matches_chain.append((path_with_slash, resolver_match))
                except Resolver404:
                    pass
        except ValueError:
            # '/' substring not found
            break
    return resolver_matches_chain 

def _should_log_route(self, request):
        # request.urlconf may be set by middleware or application level code.
        # Use this urlconf if present or default to None.
        # https://docs.djangoproject.com/en/2.1/topics/http/urls/#how-django-processes-a-request
        # https://docs.djangoproject.com/en/2.1/ref/request-response/#attributes-set-by-middleware
        urlconf = getattr(request, 'urlconf', None)

        try:
            route_match = resolve(request.path, urlconf=urlconf)
        except Resolver404:
            return False, None

        method = request.method.lower()
        view = route_match.func
        func = view
        # This is for "django rest framework"
        if hasattr(view, 'cls'):
            if hasattr(view, 'actions'):
                actions = view.actions
                method_name = actions.get(method)
                if method_name:
                    func = getattr(view.cls, view.actions[method], None)
            else:
                func = getattr(view.cls, method, None)
        elif hasattr(view, 'view_class'):
            # This is for django class-based views
            func = getattr(view.view_class, method, None)
        no_logging = getattr(func, NO_LOGGING_ATTR, False)
        no_logging_msg = getattr(func, NO_LOGGING_MSG_ATTR, None)
        return no_logging, no_logging_msg 

def add_preserved_filters(context, url, popup=False, to_field=None):
    opts = context.get('opts')
    preserved_filters = context.get('preserved_filters')

    parsed_url = list(urlparse(url))
    parsed_qs = dict(parse_qsl(parsed_url[4]))
    merged_qs = dict()

    if opts and preserved_filters:
        preserved_filters = dict(parse_qsl(preserved_filters))

        match_url = '/%s' % url.partition(get_script_prefix())[2]
        try:
            match = resolve(match_url)
        except Resolver404:
            pass
        else:
            current_url = '%s:%s' % (match.app_name, match.url_name)
            changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name)
            if changelist_url == current_url and '_changelist_filters' in preserved_filters:
                preserved_filters = dict(parse_qsl(preserved_filters['_changelist_filters']))

        merged_qs.update(preserved_filters)

    if popup:
        from django.contrib.admin.options import IS_POPUP_VAR
        merged_qs[IS_POPUP_VAR] = 1
    if to_field:
        from django.contrib.admin.options import TO_FIELD_VAR
        merged_qs[TO_FIELD_VAR] = to_field

    merged_qs.update(parsed_qs)

    parsed_url[4] = urlencode(merged_qs)
    return urlunparse(parsed_url) 

def _is_whitelisted(redirect_url):
    if not redirect_url:
        return False

    parsed = urlparse(redirect_url)
    try:
        match = resolve(parsed.path)
    except Resolver404:
        return False

    return match.url_name in NEXT_WHITELIST 

def add_preserved_filters(context, url, popup=False, to_field=None):
    opts = context.get('opts')
    preserved_filters = context.get('preserved_filters')

    parsed_url = list(urlparse(url))
    parsed_qs = dict(parse_qsl(parsed_url[4]))
    merged_qs = {}

    if opts and preserved_filters:
        preserved_filters = dict(parse_qsl(preserved_filters))

        match_url = '/%s' % unquote(url).partition(get_script_prefix())[2]
        try:
            match = resolve(match_url)
        except Resolver404:
            pass
        else:
            current_url = '%s:%s' % (match.app_name, match.url_name)
            changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name)
            if changelist_url == current_url and '_changelist_filters' in preserved_filters:
                preserved_filters = dict(parse_qsl(preserved_filters['_changelist_filters']))

        merged_qs.update(preserved_filters)

    if popup:
        from django.contrib.admin.options import IS_POPUP_VAR
        merged_qs[IS_POPUP_VAR] = 1
    if to_field:
        from django.contrib.admin.options import TO_FIELD_VAR
        merged_qs[TO_FIELD_VAR] = to_field

    merged_qs.update(parsed_qs)

    parsed_url[4] = urlencode(merged_qs)
    return urlunparse(parsed_url) 

def clean(self):
        if "checks" in self.errors:
            del self.errors["checks"]
            self.cleaned_data["checks"] = None
        if "user" in self.errors:
            del self.errors["user"]
            self.cleaned_data["user"] = self.request_user
        if self.errors:
            return
        pootle_path = self.cleaned_data.get("path")
        path_keys = ["project_code", "language_code", "dir_path", "filename"]
        try:
            path_kwargs = {
                k: v for k, v in resolve(pootle_path).kwargs.items() if k in path_keys
            }
        except Resolver404:
            raise forms.ValidationError("Unrecognised path")
        self.cleaned_data.update(path_kwargs)
        sort_on = "units"
        if "filter" in self.cleaned_data:
            unit_filter = self.cleaned_data["filter"]
            if unit_filter in ("suggestions", "user-suggestions"):
                sort_on = "suggestions"
            elif unit_filter in ("user-submissions",):
                sort_on = "submissions"
        sort_by_param = self.cleaned_data["sort"]
        self.cleaned_data["sort_by"] = ALLOWED_SORTS[sort_on].get(sort_by_param)
        self.cleaned_data["sort_on"] = sort_on 

def __call__(self, request):
        try:
            callback, args, kwargs = resolve(request.path_info, getattr(request, 'urlconf', None))
        except Resolver404:
            callback, args, kwargs = None, None, None

        if getattr(callback, 'short_circuit_middleware', False):
            return callback(request, *args, **kwargs)
        return self.get_response(request) 

def url_resolves(url):
    try:
        resolve(urlparse(url).path)
    except Resolver404:
        return False
    return True 

def add_preserved_filters(context, url, popup=False, to_field=None):
    opts = context.get('opts')
    preserved_filters = context.get('preserved_filters')

    parsed_url = list(urlparse(url))
    parsed_qs = dict(parse_qsl(parsed_url[4]))
    merged_qs = {}

    if opts and preserved_filters:
        preserved_filters = dict(parse_qsl(preserved_filters))

        match_url = '/%s' % url.partition(get_script_prefix())[2]
        try:
            match = resolve(match_url)
        except Resolver404:
            pass
        else:
            current_url = '%s:%s' % (match.app_name, match.url_name)
            changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name)
            if changelist_url == current_url and '_changelist_filters' in preserved_filters:
                preserved_filters = dict(parse_qsl(preserved_filters['_changelist_filters']))

        merged_qs.update(preserved_filters)

    if popup:
        from django.contrib.admin.options import IS_POPUP_VAR
        merged_qs[IS_POPUP_VAR] = 1
    if to_field:
        from django.contrib.admin.options import TO_FIELD_VAR
        merged_qs[TO_FIELD_VAR] = to_field

    merged_qs.update(parsed_qs)

    parsed_url[4] = urlencode(merged_qs)
    return urlunparse(parsed_url) 

def add_preserved_filters(self, context, url, popup=False, to_field=None):
        opts = context.get('opts')
        preserved_filters = context.get('preserved_filters')

        parsed_url = list(urlparse(url))
        parsed_qs = dict(parse_qsl(parsed_url[4]))
        merged_qs = dict()

        if opts and preserved_filters:
            preserved_filters = dict(parse_qsl(preserved_filters))

            match_url = '/%s' % url.partition(get_script_prefix())[2]
            try:
                match = resolve(match_url)
            except Resolver404:
                pass
            else:
                current_url = '%s:%s' % (match.app_name, match.url_name)
                changelist_url = 'admin:%s_changelist' % self.get_base_viewname()
                if changelist_url == current_url and '_changelist_filters' in preserved_filters:
                    preserved_filters = dict(parse_qsl(preserved_filters['_changelist_filters']))

            merged_qs.update(preserved_filters)

        if popup:
            from django.contrib.admin.options import IS_POPUP_VAR
            merged_qs[IS_POPUP_VAR] = 1
        if to_field:
            from django.contrib.admin.options import TO_FIELD_VAR
            merged_qs[TO_FIELD_VAR] = to_field

        merged_qs.update(parsed_qs)

        parsed_url[4] = urlencode(merged_qs)
        return urlunparse(parsed_url) 

def technical_404_response(request, exception):
    "Create a technical 404 error response. The exception should be the Http404."
    try:
        error_url = exception.args[0]['path']
    except (IndexError, TypeError, KeyError):
        error_url = request.path_info[1:]  # Trim leading slash

    try:
        tried = exception.args[0]['tried']
    except (IndexError, TypeError, KeyError):
        tried = []
    else:
        if (not tried or (                  # empty URLconf
            request.path == '/' and
            len(tried) == 1 and             # default URLconf
            len(tried[0]) == 1 and
            getattr(tried[0][0], 'app_name', '') == getattr(tried[0][0], 'namespace', '') == 'admin'
        )):
            return default_urlconf(request)

    urlconf = getattr(request, 'urlconf', settings.ROOT_URLCONF)
    if isinstance(urlconf, types.ModuleType):
        urlconf = urlconf.__name__

    caller = ''
    try:
        resolver_match = resolve(request.path)
    except Resolver404:
        pass
    else:
        obj = resolver_match.func

        if hasattr(obj, '__name__'):
            caller = obj.__name__
        elif hasattr(obj, '__class__') and hasattr(obj.__class__, '__name__'):
            caller = obj.__class__.__name__

        if hasattr(obj, '__module__'):
            module = obj.__module__
            caller = '%s.%s' % (module, caller)

    t = DEBUG_ENGINE.from_string(TECHNICAL_404_TEMPLATE)
    c = Context({
        'urlconf': urlconf,
        'root_urlconf': settings.ROOT_URLCONF,
        'request_path': error_url,
        'urlpatterns': tried,
        'reason': force_bytes(exception, errors='replace'),
        'request': request,
        'settings': get_safe_settings(),
        'raising_view_name': caller,
    })
    return HttpResponseNotFound(t.render(c), content_type='text/html') 

def technical_404_response(request, exception):
    "Create a technical 404 error response. The exception should be the Http404."
    try:
        error_url = exception.args[0]['path']
    except (IndexError, TypeError, KeyError):
        error_url = request.path_info[1:]  # Trim leading slash

    try:
        tried = exception.args[0]['tried']
    except (IndexError, TypeError, KeyError):
        tried = []
    else:
        if (not tried or (                  # empty URLconf
            request.path == '/' and
            len(tried) == 1 and             # default URLconf
            len(tried[0]) == 1 and
            getattr(tried[0][0], 'app_name', '') == getattr(tried[0][0], 'namespace', '') == 'admin'
        )):
            return default_urlconf(request)

    urlconf = getattr(request, 'urlconf', settings.ROOT_URLCONF)
    if isinstance(urlconf, types.ModuleType):
        urlconf = urlconf.__name__

    caller = ''
    try:
        resolver_match = resolve(request.path)
    except Resolver404:
        pass
    else:
        obj = resolver_match.func

        if hasattr(obj, '__name__'):
            caller = obj.__name__
        elif hasattr(obj, '__class__') and hasattr(obj.__class__, '__name__'):
            caller = obj.__class__.__name__

        if hasattr(obj, '__module__'):
            module = obj.__module__
            caller = '%s.%s' % (module, caller)

    t = DEBUG_ENGINE.from_string(TECHNICAL_404_TEMPLATE)
    c = Context({
        'urlconf': urlconf,
        'root_urlconf': settings.ROOT_URLCONF,
        'request_path': error_url,
        'urlpatterns': tried,
        'reason': force_bytes(exception, errors='replace'),
        'request': request,
        'settings': get_safe_settings(),
        'raising_view_name': caller,
    })
    return HttpResponseNotFound(t.render(c), content_type='text/html') 

def technical_404_response(request, exception):
    """Create a technical 404 error response. `exception` is the Http404."""
    try:
        error_url = exception.args[0]['path']
    except (IndexError, TypeError, KeyError):
        error_url = request.path_info[1:]  # Trim leading slash

    try:
        tried = exception.args[0]['tried']
    except (IndexError, TypeError, KeyError):
        tried = []
    else:
        if (not tried or (                  # empty URLconf
            request.path == '/' and
            len(tried) == 1 and             # default URLconf
            len(tried[0]) == 1 and
            getattr(tried[0][0], 'app_name', '') == getattr(tried[0][0], 'namespace', '') == 'admin'
        )):
            return default_urlconf(request)

    urlconf = getattr(request, 'urlconf', settings.ROOT_URLCONF)
    if isinstance(urlconf, types.ModuleType):
        urlconf = urlconf.__name__

    caller = ''
    try:
        resolver_match = resolve(request.path)
    except Resolver404:
        pass
    else:
        obj = resolver_match.func

        if hasattr(obj, '__name__'):
            caller = obj.__name__
        elif hasattr(obj, '__class__') and hasattr(obj.__class__, '__name__'):
            caller = obj.__class__.__name__

        if hasattr(obj, '__module__'):
            module = obj.__module__
            caller = '%s.%s' % (module, caller)

    with Path(CURRENT_DIR, 'templates', 'technical_404.html').open() as fh:
        t = DEBUG_ENGINE.from_string(fh.read())
    c = Context({
        'urlconf': urlconf,
        'root_urlconf': settings.ROOT_URLCONF,
        'request_path': error_url,
        'urlpatterns': tried,
        'reason': str(exception),
        'request': request,
        'settings': get_safe_settings(),
        'raising_view_name': caller,
    })
    return HttpResponseNotFound(t.render(c), content_type='text/html')