Rails 属于许多模型 [英] Rails belongs_to many models

问题描述

我确实在 SO 上发现了一些关于 Rails 关联的问题，这些问题有点像我的问题，但就我的生活而言，我似乎无法理解如何使用 belongs_to 多个模型.

I did find some questions on SO about Rails associations that are somewhat like my question, but for the life of me I can't seem to understand how to use belongs_to multiple models.

这是我想要的表结构:

User
 id

Post
 id
 user_id #foreign key; a post belongs to a User aka "Who created this post"

Comment
 id
 user_id #foreign key; a comment belongs to a User aka "Who made this comment"
 post_id #foreign key; a comment belongs to a Post aka "What post this comment is for"

还有协会:

User
 has_many :posts
 has_many :comments

Post
 belongs_to :user
 has_many :comments

Comment
 belongs_to :user
 belongs_to :post

这是正确的方法吗?

推荐答案

是的，这是正确的方法.

Yes that is the correct approach.

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