使用Ember-data和Rails進行編輯的模型未保存

Question

我正在嘗試使用ember-data和rails編輯用戶，當我編輯用戶信息並嘗試執行model.save（）時，我得到了一個

unexpected end of input

我的控制台錯誤。 看起來在Rails端正在進行一個奇怪的查詢。 這是來自Rails的查詢：

Started PUT "/users/2" for ::1 at 2015-04-11 15:59:17 -0500
 Processing by UsersController#update as HTML
 Parameters: {"user"=>{"username"=>"adminUser", "email"=>"admin@test.com", "password"=>"[FILTERED]", "admin"=>true}, "id"=>"2"}
 User Load (0.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1  [["id", 2]]
 ApiKey Load (0.4ms)  SELECT  "api_keys".* FROM "api_keys" WHERE (expired_at >= '2015-04-11 20:59:17.113883') AND "api_keys"."access_token" = $1  ORDER BY "api_keys"."id" ASC LIMIT 1  [["access_token", "500b9b5d38ecb9f851b89823d5b40d0f"]]

 User Load (0.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1  [["id", 2]]

 ApiKey Load (0.4ms)  SELECT  "api_keys".* FROM "api_keys" WHERE "api_keys"."user_id" = $1 AND (expired_at >= '2015-04-11 20:59:17.117827')  ORDER BY "api_keys"."id" ASC LIMIT 1  [["user_id", 2]]
 (0.2ms)  BEGIN
 User Exists (0.6ms)  SELECT  1 AS one FROM "users" WHERE (LOWER("users"."username") = LOWER('adminUser') AND "users"."id" != 2) LIMIT 1
 User Exists (0.3ms)  SELECT  1 AS one FROM "users" WHERE (LOWER("users"."email") = LOWER('admin@test.com') AND "users"."id" != 2) LIMIT 1
 (0.2ms)  ROLLBACK

我不知道為什么Rails會試圖選擇！= 2這樣的。

Answer 1

有驗證失敗。 您正在更新ID為2的用戶，我敢打賭您對username和email具有唯一性驗證。 問題是存在另一個具有至少相同電子郵件地址的User記錄，這導致了回滾。

當更新失敗時，您可能還應該確保返回帶有適當錯誤的狀態422 (Unprocessable Entity)不可422 (Unprocessable Entity) 。