我是否需要在Ruby on Rails生成器中指定外键？

Question

Here's my very small, basic test website use case I'm building:

A 'Posting' belongs to a 'User' and a 'User' can have many 'Posting's.

I know that in the database there has to be a foreign key relationship. Do I need to specify this foreign key in the generator?

rails generate Posting name:string body:text post_date:date User:User???

Thank you for your suggestions.

Answer 1

只需使用模型名称下划线id的整数

rails g Post user_id:integer

Answer 2

rails g Posting name:string body:text post_date:date user:references

顺便说一句，如果你的字段类型是字符串，你实际上不需要指定它的类型 - rails默认情况下会将它设置为字符串。