I am trying to create test data for a Django model in my project using factoryboy. The data is being generated through Faker
except one field, that is a ManyToManyField
; a many to many relationship with another builtin model from django.contrib.auth.model
named group.
class Voucher(models.Model):
code = models.CharField(max_length=20, null=True, blank=True, unique=True)
is_enabled = models.BooleanField('enable voucher', default=True, help_text='A soft delete mechanism for the voucher.')
start_date = models.DateTimeField(null=True, blank=True)
end_date = models.DateTimeField(null=True, blank=True)
member_roles = models.ManyToManyField(to=Group, related_name='member_roles')
def __str__(self):
return "{}".format(self.code)
class Meta:
verbose_name = 'Voucher'
verbose_name_plural = 'Vouchers'
This is my model and this is the factory I created to generate dummy data:
class VoucherFactory(django.DjangoModelFactory):
class Meta:
model = 'app.Voucher'
code = Faker('first_name')
is_enabled = fuzzy.FuzzyChoice([True, False])
start_date = fuzzy.FuzzyDateTime(datetime.datetime.now(pytz.utc))
end_date = fuzzy.FuzzyDateTime(datetime.datetime.now(pytz.utc))
@factory.post_generation
def member_roles(self, create, extracted, **kwargs):
if not create:
return
if extracted:
for member_role in extracted:
self.member_roles.add(member_role)
The data gets filled successfully except voucher_member_roles
table created against this many to many relationship in Voucher
model. I want this table to get populated also.
What I am missing?
You need to pass in the member_roles when making the voucher factory. For example:
VoucherFactory.create(member_roles=[member_role1, member_role2])
See http://factoryboy.readthedocs.io/en/latest/recipes.html#simple-many-to-many-relationship where it states:
When calling UserFactory() or UserFactory.build(), no group binding will be created. But when UserFactory.create(groups=(group1, group2, group3)) is called, the groups declaration will add passed in groups to the set of groups for the user.