调整

db/migrate/20190718005920_modify_type_for_user_agents.rb

@@ -1,6 +1,6 @@
 class ModifyTypeForUserAgents < ActiveRecord::Migration
   def up
-    rename_column :user_agents, :type, :agent_type
+    # rename_column :user_agents, :type, :agent_type
   end
 
   def down

db/migrate/20190719062616_add_ip_for_user_actions.rb

@@ -1,8 +1,8 @@
 class AddIpForUserActions < ActiveRecord::Migration
   def up
-    add_column :user_actions, :ip, :string
-
-    UserAgent.where("agent_type is null").update_all(:agent_type => 1)
+    # add_column :user_actions, :ip, :string
+    #
+    # UserAgent.where("agent_type is null").update_all(:agent_type => 1)
   end
 
   def down