live broad add recommend

app/models/live_broad.rb

@@ -1,7 +1,7 @@
 class LiveBroad < ActiveRecord::Base
     has_paper_trail
     self.table_name = "live_broads"
-    validates :room_id,:title, presence: true
+    validates :room_id,:title,:begin_time,:end_time, presence: true
     attr_accessor :v_cover
     before_save :before_save