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Diffstat (limited to 'docs/reference.rst')
| -rw-r--r-- | docs/reference.rst | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/docs/reference.rst b/docs/reference.rst index b5ccd16..9e01213 100644 --- a/docs/reference.rst +++ b/docs/reference.rst @@ -90,7 +90,7 @@ The :class:`Factory` class model = Order exclude = ('now',) - now = factory.LazyAttribute(lambda o: datetime.datetime.utcnow()) + now = factory.LazyFunction(datetime.datetime.utcnow) started_at = factory.LazyAttribute(lambda o: o.now - datetime.timedelta(hours=1)) paid_at = factory.LazyAttribute(lambda o: o.now - datetime.timedelta(minutes=50)) @@ -551,6 +551,42 @@ Faker smiley = factory.Faker('smiley') +LazyFunction +"""""""""""" + +.. class:: LazyFunction(method_to_call) + +The :class:`LazyFunction` is the simplest case where the value of an attribute +does not depend on the object being built. + +It takes as argument a method to call (function, lambda...); that method should +not take any argument, though keyword arguments are safe but unused, +and return a value. + +.. code-block:: python + + class LogFactory(factory.Factory): + class Meta: + model = models.Log + + timestamp = factory.LazyFunction(datetime.now) + +.. code-block:: pycon + + >>> LogFactory() + <Log: log at 2016-02-12 17:02:34> + + >>> # The LazyFunction can be overriden + >>> LogFactory(timestamp=now - timedelta(days=1)) + <Log: log at 2016-02-11 17:02:34> + +Decorator +~~~~~~~~~ + +The class :class:`LazyFunction` does not provide a decorator. + +For complex cases, use :meth:`LazyAttribute.lazy_attribute` directly. + LazyAttribute """"""""""""" @@ -1041,7 +1077,7 @@ gains an "upward" semantic through the double-dot notation, as used in Python im >>> company.owner.language 'fr' -Obviously, this "follow parents" hability also handles overriding some attributes on call: +Obviously, this "follow parents" ability also handles overriding some attributes on call: .. code-block:: pycon |