的Rails：顯示驗證獨特性，當複製

Question

我有一個驗證它的蛞蝓都是獨一無二的，像這樣一個Rails模型：

validates_uniqueness_of :slug 

批量導入過程中，我獲得了大量的驗證失敗，並有屏幕錯誤是這樣的：

ERROR: invalid() - Validation failed: Slug has already been taken 
ERROR: invalid() - Validation failed: Slug has already been taken 
ERROR: invalid() - Validation failed: Slug has already been taken 
... 

我想有錯誤消息顯示哪些slugs失敗驗證。如何才能做到這一點？

Answer 1

validates :slug, uniqueness: { message: "%{value} has already been taken" } 

如果這是在一個日誌中，但我想你會寫一個自定義驗證並記錄在那裏。