Question

django里的post_set是什么用法？

在一个Model下发现了类似ModelA.objects.get(xxx=xxx).post_set.defer(....)，请问这里的post_set是一个什么用法？谢谢。我在django的文档里没有搜索到post_set。

Answer 1

应该是有个叫post的model存在一个到ModelA的外键，自动为ModelA反向生成一个字段

Following relationships “backward”
If a model has a ForeignKey, instances of the foreign-key model will have access to a Manager that returns all instances of the first model. By default, this Manager is named FOO_set, where FOO is the source model name, lowercased. This Manager returns QuerySets, which can be filtered and manipulated as described in the “Retrieving objects” section above.