fohow_admin/db/migrate/20180810070807_create_wx_user_gongzhonghao.rb

class CreateWxUserGongzhonghao < ActiveRecord::Migration
  def change
    create_table :wx_user_gongzhonghaos do |t|

        #微信用户ID
        t.integer  :wx_user_id, :null => false
        #appid
        t.string   :app_id,      :null => false
        #openid
        t.string   :gzh_open_id,     :limit => 64
        t.boolean   :subscribe
        t.integer   :subscribe_time
        t.integer   :unsubscribe_time
        t.integer   :last_conversation_at
        t.timestamps
    end

    add_index :wx_user_gongzhonghaos, :app_id
    add_index :wx_user_gongzhonghaos, :gzh_open_id
    add_index :wx_user_gongzhonghaos, :wx_user_id
  end
  def self.down
    remove_index :wx_user_gongzhonghaos, :app_id
    remove_index :wx_user_gongzhonghaos, :gzh_open_id
    remove_index :wx_user_gongzhonghaos, :wx_user_id
    drop_table :wx_user_gongzhonghaos
  end
end