Anonymous avatar Anonymous committed 9b14c42

[1.1.X] Fixed #6842 -- Added reference documentation on Django's exceptions. Thanks to timo for the patch.

Backport of r13180 from trunk.

Comments (0)

Files changed (2)

       :ref:`Overview <topics-settings>` |
       :ref:`Full list of settings <ref-settings>`
+    * **Exceptions:**
+      :ref:`Overview <ref-exceptions>`
     * ** and**
       :ref:`Overview <ref-django-admin>` |
       :ref:`Adding custom commands <howto-custom-management-commands>`


+.. _ref-exceptions:
+Django Exceptions
+Django raises some Django specific exceptions as well as many standard
+Python exceptions.
+Django-specific Exceptions
+.. module:: django.core.exceptions
+    :synopsis: Django specific exceptions
+ObjectDoesNotExist and DoesNotExist
+The ``DoesNotExist`` exception is raised when an object is not found
+for the given parameters of a query.
+``ObjectDoesNotExist`` is defined in ``django.core.exceptions``.
+``DoesNotExist`` is a subclass of the base ``ObjectDoesNotExist``
+exception that is provided on every model class as a way of
+identifying the specific type of object that could not be found.
+See :meth:`~django.db.models.QuerySet.get()` for further information
+on ``ObjectDoesNotExist`` and ``DoesNotExist``.
+The ``MultipleObjectsReturned`` exception is raised by a query if only
+one object is expected, but multiple objects are returned. A base version
+of this exception is provided in ``django.core.exceptions``; each model
+class contains a subclassed version that can be used to identify the
+specific object type that has returned multiple objects.
+See :meth:`~django.db.models.QuerySet.get()` for further information.
+The ``SuspiciousOperation`` exception is raised when a user has performed
+an operation that should be considered suspicious from a security perspective,
+such as tampering with a session cookie.
+The ``PermissionDenied`` exception is raised when a user does not have
+permission to perform the action requested.
+The ``ViewDoesNotExist`` exception is raised by
+``django.core.urlresolvers`` when a requested view does not exist.
+The ``MiddlewareNotUsed`` exception is raised when a middleware is not
+used in the server configuration.
+The ``ImproperlyConfigured`` exception is raised when Django is
+somehow improperly configured -- for example, if a value in ````
+is incorrect or unparseable.
+The ``FieldError`` exception is raised when there is a problem with a
+model field. This can happen for several reasons:
+    - A field in a model clashes with a field of the same name from an
+      abstract base class
+    - An infinite loop is caused by ordering
+    - A keyword cannot be parsed from the filter parameters
+    - If a field cannot be determined from a keyword in the query
+      parameters
+    - If a join is not permitted on the specified field
+    - If a field name is invalid
+    - If a query contains invalid order_by arguments
+Database Exceptions
+Django wraps the standard database exceptions ``DatabaseError`` and
+``IntegrityError`` so that your Django code has a guaranteed common
+implementation of these classes. These database exceptions are
+provided in ``django.db``.
+The Django wrappers for database exceptions behave exactly the same as
+the underlying database exceptions. See `PEP 249 - Python Database API
+Specification v2.0`_ for further information.
+.. _`PEP 249 - Python Database API Specification v2.0`:
+Python Exceptions
+Django raises built-in Python exceptions when appropriate as well. See
+the Python `documentation`_ for further information on the built-in
+.. _`documentation`:
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.