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authorRaphaël Barrois <raphael.barrois@polytechnique.org>2013-05-03 01:03:09 +0200
committerRaphaël Barrois <raphael.barrois@polytechnique.org>2013-05-03 01:03:09 +0200
commit56a5db608f457259f7e69a5e01225adaf7016a31 (patch)
tree3bbcd5bf7348e26d55055bf32e1e457c8646a066
parent38dfde05f5be3cdd69e6fee66e7968b776b0ed9f (diff)
downloadfactory-boy-56a5db608f457259f7e69a5e01225adaf7016a31.tar
factory-boy-56a5db608f457259f7e69a5e01225adaf7016a31.tar.gz
docs: Add recipe for disconnecting signals (Closes #59).
-rw-r--r--docs/recipes.rst44
1 files changed, 44 insertions, 0 deletions
diff --git a/docs/recipes.rst b/docs/recipes.rst
index e226732..ecdff96 100644
--- a/docs/recipes.rst
+++ b/docs/recipes.rst
@@ -62,6 +62,50 @@ When a :class:`UserFactory` is instantiated, factory_boy will call
``UserLogFactory(user=that_user, action=...)`` just before returning the created ``User``.
+Example: Django's Profile
+"""""""""""""""""""""""""
+
+Django (<1.5) provided a mechanism to attach a ``Profile`` to a ``User`` instance,
+using a :class:`~django.db.models.ForeignKey` from the ``Profile`` to the ``User``.
+
+A typical way to create those profiles was to hook a post-save signal to the ``User`` model.
+
+factory_boy allows to define attributes of such profiles dynamically when creating a ``User``:
+
+.. code-block:: python
+
+ class ProfileFactory(factory.DjangoModelFactory):
+ FACTORY_FOR = my_models.Profile
+
+ title = 'Dr'
+
+ class UserFactory(factory.DjangoModelFactory):
+ FACTORY_FOR = auth_models.User
+
+ username = factory.Sequence(lambda n: "user_%d" % n)
+ profile = factory.RelatedFactory(ProfileFactory)
+
+ @classmethod
+ def _create(cls, target_class, *args, **kwargs):
+ """Override the default _create() to disable the post-save signal."""
+ post_save.disconnect(handler_create_user_profile, auth_models.User)
+ user = super(UserFactory, cls)._create(target_class, *args, **kwargs)
+ post_save.connect(handler_create_user_profile, auth_models.User)
+ return user
+
+.. OHAI_VIM:*
+
+
+.. code-block:: pycon
+
+ >>> u = UserFactory(profile__title=u"Lord")
+ >>> u.get_profile().title
+ u"Lord"
+
+Such behaviour can be extended to other situations where a signal interferes with
+factory_boy related factories.
+
+
Simple ManyToMany
-----------------