Django模型中的Python factory_boy库m2m? [英] Python factory_boy library m2m in Django model?
问题描述
我正在使用 factory_boy
在我的测试中创建灯具。
Factory_boy
仅提及关于 SubFactory
的文档,可以像 ForeignKey
字段在模型中。然而,ManyToMany协会没有什么。如果我有一个Post模型,我该如何去创建一个工厂?
I'm currently using factory_boy
for creating fixtures in my tests.
Factory_boy
docs only mentioned about SubFactory
which could act like a ForeignKey
field in a model. However, there was nothing on ManyToMany association. If I had a following Post model, how would I go about creating a factory for it?
class Post(models.Model):
title = models.CharField(max_length=100)
tags = models.ManyToManyField('tags.Tag')
class PostFactory(factory.Factory):
FACTORY_FOR = Post
title = 'My title'
tags = ???
推荐答案
post_generation钩子 - 我假设你使用较新版本的 factory_boy ?
What about post_generation hook - I assume You use newer version of factory_boy?
import random
import factory
class PostFactory(factory.Factory):
FACTORY_FOR = Post
title = factory.Sequence(lambda n: "This is test title number" + n)
@factory.post_generation(extract_prefix='tags')
def add_tags(self, create, extracted, **kwargs):
# allow something like PostFactory(tags = Tag.objects.filter())
if extracted and type(extracted) == type(Tag.objects.all()):
self.tags = extracted
self.save()
else:
if Tag.objects.all().count() < 5:
TagFactory.create_batch(5, **kwargs)
for tag in Tag.objects.all().order_by('?')[:random.randint(1, 5)]:
self.tags.add(tag)
请注意,您可以使用 PostFactory(tags__field ='some fancy default text')
,但是我建议使用Sequences ...创建好的 TagFactory
Note that You can use PostFactory(tags__field = 'some fancy default text')
, but I recommend to create good TagFactory
with Sequences ...
你应该可以绑定 PostFactory(tags = Tag.objects.filter())
但是这部分没有被测试...
You should be able to bind PostFactory(tags = Tag.objects.filter())
but this part is not tested ...
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