author | Daniel Diniz <ajaksu@gmail.com> |
Fri, 03 Jul 2009 12:10:24 +0200 | |
changeset 2500 | ecc16ffe174b |
parent 109 | 620f9b141567 |
permissions | -rwxr-xr-x |
109
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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""" |
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24. Mutually referential many-to-one relationships |
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To define a many-to-one relationship, use ``ForeignKey()`` . |
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parents:
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""" |
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parents:
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from django.db.models import * |
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|
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class Parent(Model): |
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name = CharField(maxlength=100, core=True) |
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bestchild = ForeignKey("Child", null=True, related_name="favoured_by") |
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class Child(Model): |
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name = CharField(maxlength=100) |
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parent = ForeignKey(Parent) |
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__test__ = {'API_TESTS':""" |
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# Create a Parent |
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>>> q = Parent(name='Elizabeth') |
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>>> q.save() |
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|
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# Create some children |
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>>> c = q.child_set.create(name='Charles') |
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>>> e = q.child_set.create(name='Edward') |
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# Set the best child |
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>>> q.bestchild = c |
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>>> q.save() |
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>>> q.delete() |
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"""} |