我想migration在Rails中创建一个引用另一个表.通常,我会这样做:
migration
add_column :post, :user, :references
这将创建一个名为列user_id在posts表中.但是,如果,而不是user_id,我想要的东西author_id呢？我怎样才能做到这一点？
user_id
posts
author_id
activerecord ruby-on-rails rails-migrations ruby-on-rails-3
activerecord ×1
rails-migrations ×1
ruby-on-rails ×1
ruby-on-rails-3 ×1