回复问题

app/views/discusses/_discuss.json.jbuilder

@@ -2,7 +2,7 @@ json.author do
   json.partial! 'users/user', user: discuss.user
 end
 json.id discuss.id
-json.content discuss.content
+json.content content_safe(discuss.content)
 json.time time_from_now(discuss.created_at)
 json.position discuss.position
 json.shixun_id discuss.dis_id

app/views/messages/_content.json.jbuilder

@@ -1 +1 @@
-json.content content
+json.content content_safe(content)

app/views/messages/_message_detail.json.jbuilder

@@ -1,6 +1,6 @@
 json.partial! "messages/message_simple", message: message
 json.partial! "commons/like", message: message
-json.content message.message_detail.try(:content)
+json.content content_safe(message.message_detail.try(:content))
 json.author do
   json.partial! "users/user_simple", user: message.author
 end