Merge branches 'dev_Ysl' and 'dev_aliyun' of https://bdgit.educoder.net/Hjqreturn/educoder into dev_Ysl

app/views/users/private_messages/create.json.jbuilder

@@ -3,6 +3,7 @@ json.message 'success'
 json.private_message do
   json.extract! @message, :id, :user_id, :receiver_id, :sender_id, :content
 
+  json.send_day @message.send_time.strftime('%Y-%m-%d')
   json.send_time @message.display_send_time
   json.sender do
     json.partial! 'users/user_simple', user: @message.sender