直播增加级别限制

app/models/live_broad.rb

@@ -7,7 +7,9 @@ class LiveBroad < ActiveRecord::Base
     has_and_belongs_to_many :depart_record
     serialize :rank_str, Array
     RANK_ENUM= [["普通会员","0"], ["群主","1"], ["店长", "2"], ["区域代理", "3"]]
-
+    def roles_enum
+      [ [ 'role one', 1 ], [ 'role 2', 2 ], [ 'role 3', 3 ] ]
+    end
     def before_save
       #自动取消其他置顶项
       if self.show
@@ -85,7 +87,7 @@ class LiveBroad < ActiveRecord::Base
           field :recommend
           field :rank_str do
             render do
-              bindings[:form].select( "rank_str",RANK_ENUM, {}, { :multiple => true })
+              bindings[:form].select(RANK_ENUM, {}, { :multiple => true })
             end
           end