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This note was added to document a regression in Django 1.8.0; the
regression has been fixed in 1.8.4.
Closes #232
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This method has been deprecated in `mogo.model.Model` since 2012.
Thanks to @federicobond for spotting this!
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As spotted by @stephane, thanks!
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Loading this function will, on pre-1.8 versions, load Django settings.
We'll lazy-load it to avoid crashes when Django hasn't been configured
yet (e.g in auto-discovery test setups).
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Connecting signals (with use_caching=True) inside mute_signals
was breaking unmute on exit. Paused receivers were not running.
This was caused by signal cache not being restored after unpatching.
Workaround is to clear signal cache on exit.
Fixes #212
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You may now use the following code:
import factory
factory.alchemy.SQLAlchemyModelFactory
factory.django.DjangoModelFactory
factory.mongoengine.MongoEngineFactory
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The actual behavior of Django with custom managers and inherited
abstract models is rather complex, so this had to be adapted to the
actual Django source code.
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As spotted by @proofit404
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factory.Iterator no longers begins iteration of its argument
on declaration, since this behavior may trigger database query
when that argument is, for instance, a Django queryset.
The ``factory.Iterator``'s argument will only be called when
the containing ``Factory`` is first evaluated; this means that
factories using ``factory.Iterator(models.MyThingy.objects.all())``
will no longer call the database at import time.
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This relies on the ``fake-factory`` library, and provides realistic
random values for most field types.
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Thanks to @nikolas for spotting it!
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Define ``Meta.rename = {'attrs': 'attributes'}``
if your model expects a ``attributes`` kwarg but you can't
define it since it's already reserved by the ``Factory`` class.
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From 1.8 onwards, this crashes:
>>> a = MyModel() # Don't save
>>> b = MyOtherModel(fkey_to_mymodel=a)
In turn, it breaks:
class MyModelFactory(factory.django.DjangoModelFactory):
class Meta:
model = MyModel
class MyOtherModelFactory(factory.django.DjangoModelFactory):
class Meta:
model = MyOtherModel
fkey_to_mymodel = factory.SubFactory(MyModelFactory)
MyOtherModelFactory.build() # Breaks
The error message is: Cannot assign "MyModel()": "MyModel" instance isn't saved in the database.
See https://code.djangoproject.com/ticket/10811 for details.
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Thanks to @DasAllFolks for spotting it!
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Previously, the declarations (``factory.Sequence`` & co) weren't properly computed.
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The previous version tries to use ``cls._default_manager`` all the time,
which breaks with ``manager.using(db_name)``.
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Previously, they ran as post_generation hooks, meaning that they
couldn't be checked in a model's ``save()`` method, for instance.
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``StubFactory.build()`` is now supported, and maps to
``StubFactory.stub()``.
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The ``factory.django.DjangoModelFactory`` now takes an extra option:
```
class MyFactory(factory.django.DjangoModelFactory):
class Meta:
model = models.MyModel
database = 'replica'
```
This will create all instances of ``models.Model`` in the ``'replica'``
database.
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Previously, if a factory was decorated with ``@mute_signals`` and one of
its descendant called another one of its descendant, signals weren't
unmuted properly.
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This allows the following idiom:
``user = factory.fuzzy.FuzzyChoice(User.objects.all())``
Previously, the ``User.objects.all()`` queryset would have been
evaluated *at import time*; it is now evaluated with the first use of the
``FuzzyChoice``.
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Users may now call ``factory.fuzzy.get_random_state()`` to retrieve
the current random generator's state (isolated from the one used in
Python's ``random``).
That state can then be reinjected with
``factory.fuzzy.set_random_state(state)``.
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Use ``obj`` for ``@post_generation``-decorated methods, instead of
``self``: this makes it clearer that the ``obj`` is an instance of the
model, and not of the ``Factory``.
Thanks to @jamescooke & @NiklasMM for spotting the typo.
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This disables the ``FACTORY_FOR`` syntax and related parameters,
that should be declared through ``class Meta``.
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Related to issues #78, #92, #103, #111, #153, #170
The default value of all sequences is now 0; the automagic
``_setup_next_sequence`` behavior of Django/SQLAlchemy has been removed.
This feature's only goal was to allow the following scenario:
1. Run a Python script that uses MyFactory.create() a couple of times
(with a unique field based on the sequence counter)
2. Run the same Python script a second time
Without the magical ``_setup_next_sequence``, the Sequence counter would be set
to 0 at the beginning of each script run, so both runs would generate objects
with the same values for the unique field ; thus conflicting and crashing.
The above behavior having only a very limited use and bringing various
issues (hitting the database on ``build()``, problems with non-integer
or composite primary key columns, ...), it has been removed.
It could still be emulated through custom ``_setup_next_sequence``
methods, or by calling ``MyFactory.reset_sequence()``.
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