weapp: modify codesession api

app/controllers/weapps/code_sessions_controller.rb

@@ -1,5 +1,6 @@
 class Weapps::CodeSessionsController < Weapps::BaseController
   def create
+    logged = false
     return render_error('code不能为空') if params[:code].blank?
 
     result = Wechat::Weapp.jscode2session(params[:code])
@@ -12,6 +13,7 @@ class Weapps::CodeSessionsController < Weapps::BaseController
     if open_user.present? && open_user.user
       set_session_unionid(result['unionid'])
       successful_authentication(open_user.user)
+      logged = true
     else
       # 新用户
       user_info = Wechat::Weapp.decrypt(result['session_key'], params[:encrypted_data], params[:iv])
@@ -19,6 +21,6 @@ class Weapps::CodeSessionsController < Weapps::BaseController
       set_session_unionid(user_info['unionId'])
     end
 
-    render_ok(openid: result['openid'])
+    render_ok(openid: result['openid'], logged: logged)
   end
 end