如何在ActiveAdmin Rails的admin_user模型中添加用户名

Question

I am trying to add a new field called username to my admin_user model. I am using ActiveAdmin in my application. I am not sure how to add it?

Answer 1

You can do it using these two commands:

rails generate migration add_username_to_admin_user username:string    

rake db:migrate

The first line is a shortcut for adding a field to a table ( add_username_to_admin_user ). It will produce something like this:

class AddUsernameToAdminUser < ActiveRecord::Migration
  def change
    add_column :admin_users, :username, :string
  end
end

The second line applies the migration to your database.

You might also want to review the migration documentation for more in-depth information (as always, Caveat Emptor: Rails documentation is notoriously out of date).

Answer 2

您需要将其添加到架构中（使用rails g migration ），更新数据库（ rake db:migrate ），然后活动的管理员将看到该字段。