Added documentation about the "app.Model" relation syntax introduced by [7185]
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7159 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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@ -784,9 +784,17 @@ you can use the name of the model, rather than the model object itself::
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class Manufacturer(models.Model):
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# ...
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Note, however, that you can only use strings to refer to models in the same
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models.py file -- you cannot use a string to reference a model in a different
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application, or to reference a model that has been imported from elsewhere.
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Note, however, that this only refers to models in the same models.py file -- you
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cannot use a string to reference a model defined in another application or
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imported from elsewhere.
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**New in Django development version:** to refer to models defined in another
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application, you must instead explicitially specify the application label. That
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is, if the ``Manufacturer`` model above is defined in another application called
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``production``, you'd need to use::
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class Car(models.Model):
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manufacturer = models.ForeignKey('production.Manufacturer')
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Behind the scenes, Django appends ``"_id"`` to the field name to create its
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database column name. In the above example, the database table for the ``Car``
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