ADD platform column to users table

app/models/user.rb

@@ -30,6 +30,11 @@ class User < ApplicationRecord
 
   LOGIN_CHARS = %W(2 3 4 5 6 7 8 9 a b c f e f g h i j k l m n o p q r s t u v w x y z).freeze
 
+  # educoder: 来自Educoder平台
+  # trustie: 来自Trustie平台
+  # forge: 平台本身注册的用户
+  enum platform: [:forge, :educoder, :trustie]
+
   belongs_to :laboratory, optional: true
 
   has_one :user_extension, dependent: :destroy
@@ -168,6 +173,7 @@ class User < ApplicationRecord
   #
   # validations
   #
+  validates :platform, inclusion: { in: %w(forge educoder trustie) }
   validates_presence_of :login, :if => Proc.new { |user| !user.is_a?(AnonymousUser) }, case_sensitive: false
   validates_uniqueness_of :login, :if => Proc.new { |user| user.login_changed? && user.login.present? }, case_sensitive: false
   validates_uniqueness_of :mail, :if => Proc.new { |user| user.mail_changed? && user.mail.present? }, case_sensitive: false

db/migrate/20191212110933_add_platform_to_users.rb

@@ -0,0 +1,5 @@
+class AddPlatformToUsers < ActiveRecord::Migration[5.2]
+  def change
+    add_column :users, :platform, :string, default: 0
+  end
+end