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Code Issues 32 Releases Wiki Activity

Fixed #20786 -- Cleaned up docs/ref/exceptions.txt

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Thanks Daniele Procida for the suggestion and edits.
This commit is contained in:
Dominic Rodger
2013-08-01 22:27:11 +01:00
committed by Tim Graham
parent fd0d486467
commit 920b242e30
1 changed files with 31 additions and 17 deletions
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docs/ref/exceptions.txt
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@@ -6,24 +6,29 @@ Django Exceptions
Django raises some Django specific exceptions as well as many standard
Python exceptions.
Django-specific Exceptions
==========================
Django Core Exceptions
======================
.. module:: django.core.exceptions
:synopsis: Django specific exceptions
:synopsis: Django core exceptions
Django core exception classes are defined in :mod:`django.core.exceptions`.
ObjectDoesNotExist and DoesNotExist
-----------------------------------
.. exception:: DoesNotExist
The ``DoesNotExist`` exception is raised when an object is not found for
the given parameters of a query. Django provides a ``DoesNotExist``
exception as an attribute of each model class to identify the class of
object that could not be found and to allow you to catch a particular model
class with ``try/except``.
.. exception:: ObjectDoesNotExist
The :exc:`DoesNotExist` exception is raised when an object is not found
for the given parameters of a query.
:exc:`ObjectDoesNotExist` is defined in :mod:`django.core.exceptions`.
:exc:`DoesNotExist` is a subclass of the base :exc:`ObjectDoesNotExist`
exception that is provided on every model class as a way of
identifying the specific type of object that could not be found.
The base class for ``DoesNotExist`` exceptions; a ``try/except`` for
``ObjectDoesNotExist`` will catch ``DoesNotExist`` exceptions for all
models.
See :meth:`~django.db.models.query.QuerySet.get()` for further information
on :exc:`ObjectDoesNotExist` and :exc:`DoesNotExist`.
@@ -121,6 +126,11 @@ ValidationError
.. currentmodule:: django.core.urlresolvers
URL Resolver exceptions
=======================
URL Resolver exceptions are defined in :mod:`django.core.urlresolvers`.
NoReverseMatch
--------------
.. exception:: NoReverseMatch
@@ -134,9 +144,10 @@ NoReverseMatch
Database Exceptions
===================
Database exceptions are provided in :mod:`django.db`.
Django wraps the standard database exceptions so that your Django code has a
guaranteed common implementation of these classes. These database exceptions
are provided in :mod:`django.db`.
guaranteed common implementation of these classes.
.. exception:: Error
.. exception:: InterfaceError
@@ -160,34 +171,37 @@ to Python 3.)
.. versionchanged:: 1.6
Previous version of Django only wrapped ``DatabaseError`` and
Previous versions of Django only wrapped ``DatabaseError`` and
``IntegrityError``, and did not provide ``__cause__``.
.. exception:: models.ProtectedError
Raised to prevent deletion of referenced objects when using
:attr:`django.db.models.PROTECT`. Subclass of :exc:`IntegrityError`.
:attr:`django.db.models.PROTECT`. :exc:`models.ProtectedError` is a subclass
of :exc:`IntegrityError`.
.. currentmodule:: django.http
Http Exceptions
===============
Http exceptions are provided in :mod:`django.http`.
.. exception:: UnreadablePostError
The :exc:`UnreadablePostError` is raised when a user cancels an upload.
It is available from :mod:`django.http`.
.. currentmodule:: django.db.transaction
Transaction Exceptions
======================
Transaction exceptions are defined in :mod:`django.db.transaction`.
.. exception:: TransactionManagementError
The :exc:`TransactionManagementError` is raised for any and all problems
related to database transactions. It is available from
:mod:`django.db.transaction`.
related to database transactions.
Python Exceptions
=================