迁移及勾选问题

app/controllers/admins/subject_settings_controller.rb

@@ -8,12 +8,6 @@ class Admins::SubjectSettingsController < Admins::BaseController
   end
 
   def update
-    # 为了复用代码
-    if params["show_moblie"]
-      subject.find(params[:id]).update_attributes(:show_moblie => params[:show_moblie])
-      return
-    end
-
     sub_discipline_ids = params[:sub_disciplines] || []
     sub_ids = sub_discipline_ids.reject(&:blank?).map(&:to_i)
     old_sub_ids = current_subject.sub_discipline_containers.pluck(:sub_discipline_id)

db/migrate/20200223021427_sync_subjectds_mobile.rb

@@ -0,0 +1,7 @@
+class SyncSubjectdsMobile < ActiveRecord::Migration[5.2]
+  def change
+    SubDisciplineContainer.find_each do |sc|
+      subject.find(sc.container_id).update_column(:show_mobile => true)
+    end
+  end
+end