init project

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

@@ -0,0 +1,11 @@
+json.status 0
+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
+  end
+end

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

@@ -0,0 +1,13 @@
+json.count @count
+json.private_messages do
+  json.array! @messages.each do |message|
+    json.extract! message, :id, :content, :message_count
+
+    json.unread message.unread?
+    json.send_time message.display_send_time
+
+    json.target do
+      json.partial! 'users/user_simple', user: message.target
+    end
+  end
+end