我有一个像这样的Project迁移类:
class CreateProjects < ActiveRecord::Migration def change create_table :projects do |t| t.string :title t.text :description t.boolean :public t.references :user,index: true,foreign_key: true t.timestamps null: false end end end
它在项目表中创建了一个列名user_id,但是我想将列命名为owner_id,因此我可以使用project.owner而不是project.user.
解决方法
你可以用两种方式做到:
#app/models/project.rb class Project < ActiveRecord::Base belongs_to :owner,class_name: "User",foreign_key: :user_id end
要么
$rails g migration ChangeForeignKeyForProjects # db/migrate/change_foreign_key_for_projects.rb class ChangeForeignKeyForProjects < ActiveRecord::Migration def change rename_column :projects,:user_id,:owner_id end end
然后:
$rake db:migrate