Once the 3 first companies have been created, they will be reused for all following objects. how to use factory boy with django factoryboy provides a class DjangoModelFactory as a base class for django unit test factories. Most features should thus feel quite familiar to Django users. I use Factory classes for both testing and creating dummy data on the site. However I need to import a huge dataset of countries & cities to the database. I use django-cities-light to store the user locations. Django¶ The first versions of factoryboy were designed specifically for Django, but the library has now evolved to be framework-independent. Factoryboy can not generate database-dependent field. If we commonly use a specific variant of our objects, we can refine a factory accordingly: class FemaleProfileFactory(ProfileFactory): gender firstname Jane accountusername factory. Using factoryboy with ORMs¶ factoryboy provides custom Factory subclasses for various ORMs, adding dedicated features. I liked how in factoryboy, for a given Factory you could call a method attributes() and get a dict back, good for use with dataset.But whats great about mixer is it helps you be DRY because of how it can do so much on-the-fly. For example, given: class MyFactory(OKFactory): object factory.SubFactory(MyOtherFactory) related factory. class MyFactory(): class Meta: model MyModel title My Title if random() < 0.5 else None description factory. Supporting anecdote - why I chose mixer.I was drawn to factoryboy initially. I think you can leverage the ability to override parameters passed in to the RelatedFactory to achieve what you want. I want to use factory.LazyAttribute to build one attribute based on the condition of another attribute. Then, provide values for the name field from a constant list (here using 圜hoice): class InvoiceFactory(): We have now defined basic factories for our Account and Profile classes. I am using factoryboy to build some fixtures in Django. Create some companies, then reuse:įirst, add a django_get_or_create attribute to your CompanyFactory: if the provided name already exists in the database, the existing instance will be reused: class CompanyFactory(): However, it will always cycle through the same factories. The iterator is evaluated lazily, when the first invoice is created. This only deletes the object in the database the Python instance will still exist and will still have data in its fields. Self.assertTrue( have two options: Always pick an existing company: class InvoiceFactory():Ĭompany = factory.Iterator(()) Calling delete () on a django model instance (which your factory supposedly creates) will delete the database row, but nor your local python representation: Issues an SQL DELETE for the object. Tests.py from django.test import TestCaseįrom app.factories import ToppingFactory, PizzaFactory Pizza = super(PizzaFactory, cls)._prepare(create, **kwargs) Toppings = models.ManyToManyField(Topping) Have I defined PizzaFactory's _prepare method properly? How do you access the name in one table from the other table when you have a many-to-many relationship? When I run the tests in the debugger, I can see a 'toppings' object but it don't understand how to get the name from it. The graph is stored as a collection of edges, each referencing both a. I get a similar error for the second test. All are runnable and can be found in the /examples directory of the distribution. When I run the first test, I get the error "AttributeError: 'Pizza' object has no attribute 'topping'". For example, we keep ours in a directory called projects inside our home directory. you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. factory.django Factory Boy 2.9.2 documentation Note You are not reading the most recent version of this documentation. Django + Factory Boy: Use Trait to create other factory objects. The factory_boy documentation doesn't appear to discuss this and I'm having trouble figuring out what I'm doing wrong. I am creating a factory for the following Django model: class Book(models.Model). I'm trying to test a many-to-many relationship between two Django models using factory_boy.
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