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- Generic Relations
- =================
- Generic relations' fields are be frozen, but unfortunately
- not the GenericForeignKey itself (see :ref:`orm-freezing` for a reason why).
- To add it back onto a model, add the import
- for generic at the top of the migration and then in the body of forwards() put::
- gfk = generic.GenericForeignKey()
- gfk.contribute_to_class(orm.FooModel, "object_link")
- This will add the GenericForeignKey onto the model as model.object_link.
- You can pass the optional content_type and id field names into the
- constructor as usual.
- Also, be careful when using ContentType; make sure to use the frozen
- orm['contenttypes.ContentType'], and don't import it directly,
- otherwise comparisons may fail.
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