如何在子工厂（Django）中包含多对多字段？

Question

我有两个模型：Project和Tag。在Project有许多领域：project_tags我为他们两个都写了工厂。问题是我不知道如何将TagFactory包含到ProjectFactory

我试过：

project_tags = factory.SubFactory(TagFactory)

错误：

TypeError: Direct assignment to the forward side of a many-to-many set is prohibited. Use project_tags.set() instead

而且：

Project.project_tags.set()

错误：

AttributeError: 'ManyToManyDescriptor' object has no attribute 'set'

Answer 1

简单的解决方案是通过^{}或^{}：

class ProjectFactory(factory.django.DjangoModelFactory):
    class Meta:
        model = Project

    tags = factory.RelatedFactoryList(
        TagFactory,
        size=4,
    )