Python django.core.exceptions.ViewDoesNotExist() Examples

The following are 14 code examples for showing how to use django.core.exceptions.ViewDoesNotExist(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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Example 1
Project: GTDWeb   Author: lanbing510   File: views.py    License: GNU General Public License v2.0 5 votes vote down vote up
def extract_views_from_urlpatterns(urlpatterns, base='', namespace=None):
    """
    Return a list of views from a list of urlpatterns.

    Each object in the returned list is a two-tuple: (view_func, regex)
    """
    views = []
    for p in urlpatterns:
        if hasattr(p, 'url_patterns'):
            try:
                patterns = p.url_patterns
            except ImportError:
                continue
            views.extend(extract_views_from_urlpatterns(
                patterns,
                base + p.regex.pattern,
                (namespace or []) + (p.namespace and [p.namespace] or [])
            ))
        elif hasattr(p, 'callback'):
            try:
                views.append((p.callback, base + p.regex.pattern,
                              namespace, p.name))
            except ViewDoesNotExist:
                continue
        else:
            raise TypeError(_("%s does not appear to be a urlpattern object") % p)
    return views 
Example 2
Project: luscan-devel   Author: blackye   File: urlresolvers.py    License: GNU General Public License v2.0 5 votes vote down vote up
def get_callable(lookup_view, can_fail=False):
    """
    Convert a string version of a function name to the callable object.

    If the lookup_view is not an import path, it is assumed to be a URL pattern
    label and the original string is returned.

    If can_fail is True, lookup_view might be a URL pattern label, so errors
    during the import fail and the string is returned.
    """
    if not callable(lookup_view):
        mod_name, func_name = get_mod_func(lookup_view)
        if func_name == '':
            return lookup_view

        try:
            mod = import_module(mod_name)
        except ImportError:
            parentmod, submod = get_mod_func(mod_name)
            if (not can_fail and submod != '' and
                    not module_has_submodule(import_module(parentmod), submod)):
                raise ViewDoesNotExist(
                    "Could not import %s. Parent module %s does not exist." %
                    (lookup_view, mod_name))
            if not can_fail:
                raise
        else:
            try:
                lookup_view = getattr(mod, func_name)
                if not callable(lookup_view):
                    raise ViewDoesNotExist(
                        "Could not import %s.%s. View is not callable." %
                        (mod_name, func_name))
            except AttributeError:
                if not can_fail:
                    raise ViewDoesNotExist(
                        "Could not import %s. View does not exist in module %s." %
                        (lookup_view, mod_name))
    return lookup_view 
Example 3
Project: openhgsenti   Author: drexly   File: views.py    License: Apache License 2.0 5 votes vote down vote up
def extract_views_from_urlpatterns(urlpatterns, base='', namespace=None):
    """
    Return a list of views from a list of urlpatterns.

    Each object in the returned list is a two-tuple: (view_func, regex)
    """
    views = []
    for p in urlpatterns:
        if hasattr(p, 'url_patterns'):
            try:
                patterns = p.url_patterns
            except ImportError:
                continue
            views.extend(extract_views_from_urlpatterns(
                patterns,
                base + p.regex.pattern,
                (namespace or []) + (p.namespace and [p.namespace] or [])
            ))
        elif hasattr(p, 'callback'):
            try:
                views.append((p.callback, base + p.regex.pattern,
                              namespace, p.name))
            except ViewDoesNotExist:
                continue
        else:
            raise TypeError(_("%s does not appear to be a urlpattern object") % p)
    return views 
Example 4
Project: djongo   Author: nesdis   File: tests.py    License: GNU Affero General Public License v3.0 5 votes vote down vote up
def test_exceptions(self):
        # A missing view (identified by an AttributeError) should raise
        # ViewDoesNotExist, ...
        with self.assertRaisesMessage(ViewDoesNotExist, "View does not exist in"):
            get_callable('urlpatterns_reverse.views.i_should_not_exist')
        # ... but if the AttributeError is caused by something else don't
        # swallow it.
        with self.assertRaises(AttributeError):
            get_callable('urlpatterns_reverse.views_broken.i_am_broken') 
Example 5
Project: djongo   Author: nesdis   File: tests.py    License: GNU Affero General Public License v3.0 5 votes vote down vote up
def test_view_does_not_exist(self):
        msg = "View does not exist in module urlpatterns_reverse.views."
        with self.assertRaisesMessage(ViewDoesNotExist, msg):
            get_callable('urlpatterns_reverse.views.i_should_not_exist') 
Example 6
Project: djongo   Author: nesdis   File: tests.py    License: GNU Affero General Public License v3.0 5 votes vote down vote up
def test_non_string_value(self):
        msg = "'1' is not a callable or a dot-notation path"
        with self.assertRaisesMessage(ViewDoesNotExist, msg):
            get_callable(1) 
Example 7
Project: djongo   Author: nesdis   File: tests.py    License: GNU Affero General Public License v3.0 5 votes vote down vote up
def test_parent_module_does_not_exist(self):
        msg = 'Parent module urlpatterns_reverse.foo does not exist.'
        with self.assertRaisesMessage(ViewDoesNotExist, msg):
            get_callable('urlpatterns_reverse.foo.bar') 
Example 8
Project: djongo   Author: nesdis   File: tests.py    License: GNU Affero General Public License v3.0 5 votes vote down vote up
def test_not_callable(self):
        msg = (
            "Could not import 'urlpatterns_reverse.tests.resolve_test_data'. "
            "View is not callable."
        )
        with self.assertRaisesMessage(ViewDoesNotExist, msg):
            get_callable('urlpatterns_reverse.tests.resolve_test_data') 
Example 9
Project: maas   Author: maas   File: __init__.py    License: GNU Affero General Public License v3.0 5 votes vote down vote up
def get_resource_uri_template(self):
    """
    URI template processor.
    See http://bitworking.org/projects/URI-Templates/
    """

    def _convert(template, params=[]):
        """URI template converter"""
        paths = template % dict([p, "{%s}" % p] for p in params)
        return "%s%s" % (get_script_prefix(), paths)

    try:
        resource_uri = self.handler.resource_uri()
        components = [None, [], {}]

        for i, value in enumerate(resource_uri):
            components[i] = value
        lookup_view, args, kwargs = components
        try:
            lookup_view = get_callable(lookup_view)
        except (ImportError, ViewDoesNotExist):
            # Emulate can_fail=True from earlier django versions.
            pass

        possibilities = get_resolver(None).reverse_dict.getlist(lookup_view)
        # The monkey patch is right here: we need to cope with 'possibilities'
        # being a list of tuples with 2 or 3 elements.
        for possibility_data in possibilities:
            possibility = possibility_data[0]
            for result, params in possibility:
                if args:
                    if len(args) != len(params):
                        continue
                    return _convert(result, params)
                else:
                    if set(kwargs.keys()) != set(params):
                        continue
                    return _convert(result, params)
    except Exception:
        return None 
Example 10
Project: GTDWeb   Author: lanbing510   File: urlresolvers.py    License: GNU General Public License v2.0 4 votes vote down vote up
def get_callable(lookup_view, can_fail=False):
    """
    Return a callable corresponding to lookup_view. This function is used
    by both resolve() and reverse(), so can_fail allows the caller to choose
    between returning the input as is and raising an exception when the input
    string can't be interpreted as an import path.

    If lookup_view is already a callable, return it.
    If lookup_view is a string import path that can be resolved to a callable,
      import that callable and return it.
    If lookup_view is some other kind of string and can_fail is True, the string
      is returned as is. If can_fail is False, an exception is raised (either
      ImportError or ViewDoesNotExist).
    """
    if callable(lookup_view):
        return lookup_view

    mod_name, func_name = get_mod_func(lookup_view)
    if not func_name:  # No '.' in lookup_view
        if can_fail:
            return lookup_view
        else:
            raise ImportError(
                "Could not import '%s'. The path must be fully qualified." %
                lookup_view)

    try:
        mod = import_module(mod_name)
    except ImportError:
        if can_fail:
            return lookup_view
        else:
            parentmod, submod = get_mod_func(mod_name)
            if submod and not module_has_submodule(import_module(parentmod), submod):
                raise ViewDoesNotExist(
                    "Could not import '%s'. Parent module %s does not exist." %
                    (lookup_view, mod_name))
            else:
                raise
    else:
        try:
            view_func = getattr(mod, func_name)
        except AttributeError:
            if can_fail:
                return lookup_view
            else:
                raise ViewDoesNotExist(
                    "Could not import '%s'. View does not exist in module %s." %
                    (lookup_view, mod_name))
        else:
            if not callable(view_func):
                # For backwards compatibility this is raised regardless of can_fail
                raise ViewDoesNotExist(
                    "Could not import '%s.%s'. View is not callable." %
                    (mod_name, func_name))

            return view_func 
Example 11
Project: bioforum   Author: reBiocoder   File: utils.py    License: MIT License 4 votes vote down vote up
def get_callable(lookup_view):
    """
    Return a callable corresponding to lookup_view.
    * If lookup_view is already a callable, return it.
    * If lookup_view is a string import path that can be resolved to a callable,
      import that callable and return it, otherwise raise an exception
      (ImportError or ViewDoesNotExist).
    """
    if callable(lookup_view):
        return lookup_view

    if not isinstance(lookup_view, str):
        raise ViewDoesNotExist("'%s' is not a callable or a dot-notation path" % lookup_view)

    mod_name, func_name = get_mod_func(lookup_view)
    if not func_name:  # No '.' in lookup_view
        raise ImportError("Could not import '%s'. The path must be fully qualified." % lookup_view)

    try:
        mod = import_module(mod_name)
    except ImportError:
        parentmod, submod = get_mod_func(mod_name)
        if submod and not module_has_submodule(import_module(parentmod), submod):
            raise ViewDoesNotExist(
                "Could not import '%s'. Parent module %s does not exist." %
                (lookup_view, mod_name)
            )
        else:
            raise
    else:
        try:
            view_func = getattr(mod, func_name)
        except AttributeError:
            raise ViewDoesNotExist(
                "Could not import '%s'. View does not exist in module %s." %
                (lookup_view, mod_name)
            )
        else:
            if not callable(view_func):
                raise ViewDoesNotExist(
                    "Could not import '%s.%s'. View is not callable." %
                    (mod_name, func_name)
                )
            return view_func 
Example 12
Project: Hands-On-Application-Development-with-PyCharm   Author: PacktPublishing   File: utils.py    License: MIT License 4 votes vote down vote up
def get_callable(lookup_view):
    """
    Return a callable corresponding to lookup_view.
    * If lookup_view is already a callable, return it.
    * If lookup_view is a string import path that can be resolved to a callable,
      import that callable and return it, otherwise raise an exception
      (ImportError or ViewDoesNotExist).
    """
    if callable(lookup_view):
        return lookup_view

    if not isinstance(lookup_view, str):
        raise ViewDoesNotExist("'%s' is not a callable or a dot-notation path" % lookup_view)

    mod_name, func_name = get_mod_func(lookup_view)
    if not func_name:  # No '.' in lookup_view
        raise ImportError("Could not import '%s'. The path must be fully qualified." % lookup_view)

    try:
        mod = import_module(mod_name)
    except ImportError:
        parentmod, submod = get_mod_func(mod_name)
        if submod and not module_has_submodule(import_module(parentmod), submod):
            raise ViewDoesNotExist(
                "Could not import '%s'. Parent module %s does not exist." %
                (lookup_view, mod_name)
            )
        else:
            raise
    else:
        try:
            view_func = getattr(mod, func_name)
        except AttributeError:
            raise ViewDoesNotExist(
                "Could not import '%s'. View does not exist in module %s." %
                (lookup_view, mod_name)
            )
        else:
            if not callable(view_func):
                raise ViewDoesNotExist(
                    "Could not import '%s.%s'. View is not callable." %
                    (mod_name, func_name)
                )
            return view_func 
Example 13
Project: python   Author: Yeah-Kun   File: utils.py    License: Apache License 2.0 4 votes vote down vote up
def get_callable(lookup_view):
    """
    Return a callable corresponding to lookup_view.
    * If lookup_view is already a callable, return it.
    * If lookup_view is a string import path that can be resolved to a callable,
      import that callable and return it, otherwise raise an exception
      (ImportError or ViewDoesNotExist).
    """
    if callable(lookup_view):
        return lookup_view

    if not isinstance(lookup_view, six.string_types):
        raise ViewDoesNotExist("'%s' is not a callable or a dot-notation path" % lookup_view)

    mod_name, func_name = get_mod_func(lookup_view)
    if not func_name:  # No '.' in lookup_view
        raise ImportError("Could not import '%s'. The path must be fully qualified." % lookup_view)

    try:
        mod = import_module(mod_name)
    except ImportError:
        parentmod, submod = get_mod_func(mod_name)
        if submod and not module_has_submodule(import_module(parentmod), submod):
            raise ViewDoesNotExist(
                "Could not import '%s'. Parent module %s does not exist." %
                (lookup_view, mod_name)
            )
        else:
            raise
    else:
        try:
            view_func = getattr(mod, func_name)
        except AttributeError:
            raise ViewDoesNotExist(
                "Could not import '%s'. View does not exist in module %s." %
                (lookup_view, mod_name)
            )
        else:
            if not callable(view_func):
                raise ViewDoesNotExist(
                    "Could not import '%s.%s'. View is not callable." %
                    (mod_name, func_name)
                )
            return view_func 
Example 14
Project: python2017   Author: bpgc-cte   File: utils.py    License: MIT License 4 votes vote down vote up
def get_callable(lookup_view):
    """
    Return a callable corresponding to lookup_view.
    * If lookup_view is already a callable, return it.
    * If lookup_view is a string import path that can be resolved to a callable,
      import that callable and return it, otherwise raise an exception
      (ImportError or ViewDoesNotExist).
    """
    if callable(lookup_view):
        return lookup_view

    if not isinstance(lookup_view, six.string_types):
        raise ViewDoesNotExist("'%s' is not a callable or a dot-notation path" % lookup_view)

    mod_name, func_name = get_mod_func(lookup_view)
    if not func_name:  # No '.' in lookup_view
        raise ImportError("Could not import '%s'. The path must be fully qualified." % lookup_view)

    try:
        mod = import_module(mod_name)
    except ImportError:
        parentmod, submod = get_mod_func(mod_name)
        if submod and not module_has_submodule(import_module(parentmod), submod):
            raise ViewDoesNotExist(
                "Could not import '%s'. Parent module %s does not exist." %
                (lookup_view, mod_name)
            )
        else:
            raise
    else:
        try:
            view_func = getattr(mod, func_name)
        except AttributeError:
            raise ViewDoesNotExist(
                "Could not import '%s'. View does not exist in module %s." %
                (lookup_view, mod_name)
            )
        else:
            if not callable(view_func):
                raise ViewDoesNotExist(
                    "Could not import '%s.%s'. View is not callable." %
                    (mod_name, func_name)
                )
            return view_func