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[1.2.X] Fixed #13538 -- Clarified query examples with more explicit i…

…mport 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
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commit 91310e759a616d7bc26be5274417279a42d9ff4a 1 parent 9584b77
Gabriel Hurley authored
Showing with 10 additions and 5 deletions.
  1. +10 −5 docs/topics/db/queries.txt
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15 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.
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