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| author | Gabriel Hurley <gabehr@gmail.com> | 2010-10-09 08:26:29 +0000 |
|---|---|---|
| committer | Gabriel Hurley <gabehr@gmail.com> | 2010-10-09 08:26:29 +0000 |
| commit | 91310e759a616d7bc26be5274417279a42d9ff4a (patch) | |
| tree | 464b4ad9b008d0ecf90de37feb80e5fc17717067 | |
| parent | 9584b77c35752b76116d34ac9d8b57c560ef5846 (diff) | |
[1.2.X] Fixed #13538 -- Clarified query examples with more explicit import statements and model vs. instance differentiation. Thanks to yipengh87 and kmtracey for the report, and timo for the patch.
Backport of [14070] from trunk.
git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14073 bcc190cf-cafb-0310-a4f2-bffc1f526a37
| -rw-r--r-- | docs/topics/db/queries.txt | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/docs/topics/db/queries.txt b/docs/topics/db/queries.txt index 3d598f87a1..e8966807b1 100644 --- a/docs/topics/db/queries.txt +++ b/docs/topics/db/queries.txt @@ -94,18 +94,23 @@ the database until you explicitly call ``save()``. Saving ``ForeignKey`` and ``ManyToManyField`` fields ---------------------------------------------------- -Updating ``ForeignKey`` fields works exactly the same way as saving a normal -field; simply assign an object of the right type to the field in question:: +Updating a ``ForeignKey`` field works exactly the same way as saving a normal +field; simply assign an object of the right type to the field in question. +This example updates the ``blog`` attribute of an ``Entry`` instance ``entry``:: + >>> from mysite.blog.models import Entry + >>> entry = Entry.objects.get(pk=1) >>> cheese_blog = Blog.objects.get(name="Cheddar Talk") >>> entry.blog = cheese_blog >>> entry.save() Updating a ``ManyToManyField`` works a little differently; use the ``add()`` -method on the field to add a record to the relation:: +method on the field to add a record to the relation. This example adds the +``Author`` instance ``joe`` to the ``entry`` object:: - >> joe = Author.objects.create(name="Joe") - >> entry.authors.add(joe) + >>> from mysite.blog.models import Author + >>> joe = Author.objects.create(name="Joe") + >>> entry.authors.add(joe) Django will complain if you try to assign or add an object of the wrong type. |
