Mommy Models
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Mommy Models
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Basic Usage
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class Kid ( models . Model ):
"""
Model class Kid of family app
"""
happy = models . BooleanField ()
name = models . CharField ( max_length = 30 )
age = models . IntegerField ()
bio = models . TextField ()
wanted_games_qtd = models . BigIntegerField ()
birthday = models . DateField ()
appointment = models . DateTimeField ()
# -*- coding:utf-8 -*-
#Core Django imports
from django.test import TestCase
#Third-party app imports
from model_mommy import mommy
from model_mommy.recipe import Recipe , foreign_key
# Relative imports of the 'app-name' package
from .models import Kid
class KidTestModel ( TestCase ):
"""
Class to test the model
Kid
"""
def setUp ( self ):
"""
Set up all the tests
"""
self . kid = mommy . make ( Kid )
from model_mommy import mommy
# 1st form: app_label.model_name
kid = mommy . make ( 'family.Kid' )
# 2nd form: model_name
dog = mommy . make ( 'Dog' )
class Kid ( models . Model ):
"""
Model class Kid of family app
"""
happy = models . BooleanField ()
name = models . CharField ( max_length = 30 )
age = models . IntegerField ()
bio = models . TextField ()
wanted_games_qtd = models . BigIntegerField ()
birthday = models . DateField ()
appointment = models . DateTimeField ()
class Meta :
verbose_name = _ ( u 'Kid' )
verbose_name_plural = _ ( u 'Kids' )
def __unicode__ ( self ):
"""
Return the name of kid
"""
return u ' %s ' % ( self . name )
class Dog ( models . Model ):
"""
Model class Dog of family app
"""
owner = models . ForeignKey ( 'Kid' )
# -*- coding:utf-8 -*-
#Core Django imports
from django.test import TestCase
#Third-party app imports
from model_mommy import mommy
from model_mommy.recipe import Recipe , foreign_key
# Relative imports of the 'app-name' package
class DogTestModel ( TestCase ):
"""
Class to test the model
Dog
"""
def setUp ( self ):
"""
Set up all the tests
"""
self . rex = mommy . make ( 'family.Dog' )
# -*- coding:utf-8 -*-
#Core Django imports
from django.test import TestCase
#Third-party app imports
from model_mommy import mommy
from model_mommy.recipe import Recipe , foreign_key
# Relative imports of the 'app-name' package
class DogTestModel ( TestCase ):
"""
Class to test the model
Dog
"""
def setUp ( self ):
"""
Set up all the tests
"""
self . rex = mommy . make ( 'family.Dog' , make_m2m = True )
# -*- coding:utf-8 -*-
#Core Django imports
from django.test import TestCase
#Third-party app imports
from model_mommy import mommy
from model_mommy.recipe import Recipe , foreign_key
# Relative imports of the 'app-name' package
from .models import Kid
class KidTestModel ( TestCase ):
"""
Class to test the model
Kid
"""
def setUp ( self ):
"""
Set up all the tests
"""
self . kid = mommy . make (
Kid ,
age = 3
)
self . another_kid = mommy . make (
'family.Kid' ,
age = 6
)
# -*- coding:utf-8 -*-
#Core Django imports
from django.test import TestCase
#Third-party app imports
from model_mommy import mommy
from model_mommy.recipe import Recipe , foreign_key
# Relative imports of the 'app-name' package
from .models import Dog
class DogTestModel ( TestCase ):
"""
Class to test the model
Dog
"""
def setUp ( self ):
"""
Set up all the tests
"""
self . bobs_dog = mommy . make (
'family.Dog' ,
owner__name = 'Bob'
)
from model_mommy import mommy
kid = mommy . prepare ( 'family.Kid' )
from model_mommy import mommy
dog = mommy . prepare ( 'family.Dog' , _save_related = True )
assert dog . id is None
assert bool ( dog . owner . id ) is True
from model_mommy import mommy
kids = mommy . make ( 'family.Kid' , _quantity = 3 )
assert len ( kids ) == 3
from model_mommy import mommy
kids = mommy . prepare ( 'family.Kid' , _quantity = 3 )
assert len ( kids ) == 3
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Let’s say you have an app family with a model like this:
To create a persisted instance, just call Mommy:
No need to pass attributes every damn time.
Importing every model over and over again is boring. So let Mommy import them for you:
You can only use the 2nd form on unique model names. If you have an app family with a Dog, and an app farm with a Dog, you must use the app_label.model_name form.
Mommy also handles relationships. Say the kid has a dog:
She will also create the Kid, automagically.
NOTE: ForeignKeys and OneToOneFields
Since Django 1.8, ForeignKey and OneToOne fields don’t accept unpersisted model instances anymore. This means if you do:
You’ll end with a persisted “Kid” instance.
If you want to, you can prepare your own set of related object and pass it to model_mommy. Here’s an example:
Of course it’s possible to explicitly set values for attributes.
Related objects attributes are also reachable by their name or related names:
Mommy does not creates files for FileField types. If you need to have the files created, you can pass the flag _create_files=True (defaults to False ) to either mommy.make or mommy.make_recipe .
Important : Mommy does not do any kind of file clean up, so it’s up to you to delete the files created by it.
If you don’t need a persisted object, Mommy can handle this for you as well:
It works like make , but it doesn’t persist the instance neither the related instances.
If you want to persist only the related instances but not your model, you can use the _save_related parameter for it:
If you need to create more than one instance of the model, you can use the _quantity parameter for it:
© Copyright 2014, Lucas Simon Rodrigues Magalhaes
Revision 3173513c .
We're commissioning a model to celebrate two community milestones!
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