Question

我一直在阅读和关注Django教程https://docs.djangoproject.com/en/1.3/intro/tutorial01/我在Xubuntu 12.04 LTS虚拟机上运行Django 1.3.1和Python 2.7.3，如果重要的话，还有512 MB RAM。

实际上我找到了确切的问题，但参考文献似乎已经过时了。有没有人有可行的参考链接？ Where does 'article_set' come from in Django?

提前谢谢。

Answer 1

Django执行ForeignKey查找以建立相关对象之间的关系。这些关系是作为_set

后缀的访问者动态添加的

def get_accessor_name(self):
    # This method encapsulates the logic that decides what name to give an
    # accessor descriptor that retrieves related many-to-one or
    # many-to-many objects. It uses the lower-cased object_name + "_set",
    # but this can be overridden with the "related_name" option.
    if self.field.rel.multiple:
        # If this is a symmetrical m2m relation on self, there is no reverse accessor.
        if getattr(self.field.rel, 'symmetrical', False) and self.model == self.parent_model:
            return None
        return self.field.rel.related_name or (self.opts.object_name.lower() + '_set')
    else:
        return self.field.rel.related_name or (self.opts.object_name.lower())

Django源代码执行此操作（models/related.py）

Django教程：其他对象来自哪里？

1 个答案: