[英]rails 2.3.8 validates_uniqueness_of with :scope not working
[英]Rails validates_uniqueness_of ignoring scope
我對Rails還是很陌生,但是在我繼承的項目中,Rails / ActiveRecord似乎忽略了validates_uniqueness_of
聲明的作用域。 我有以下模型:
class User < ActiveRecord::Base
…
validates_uniqueness_of :email, scope: :brand_id, allow_nil: true
…
belongs_to :brand
…
end
有與現有用戶記錄email
的foo@bar.com
和brand_id
的1
。
嘗試更新id
為123
, email
為foo@bar.com
且brand_id
為2
另一個用戶記錄時,我收到Validation failed: Email has already been taken
錯誤。
發生此錯誤時,我看到以下兩個查詢一個接一個地運行:
SELECT 1 AS one FROM "users" WHERE ("users"."email" = 'foo@bar.com' AND "users"."id" != 123) LIMIT 1;
SELECT 1 AS one FROM "users" WHERE ("users"."email" = 'foo@bar.com' AND "users"."id" != 123 AND "users"."brand_id" = 2) LIMIT 1;
看起來第二個查詢正在執行正確的唯一性檢查,但是第一個查詢忽略了范圍。
關於看什么或如何進一步調試的任何技巧將不勝感激。
您的模型中的邏輯沒有錯。 還有其他一些原因導致記錄無法保存。
你能把整個模型放嗎?
class Artwork < ApplicationRecord
...
validates_uniqueness_of :artwork_file_name, scope: :game_id
...
end
2.3.1 :810 > Artwork.new(artwork_file_name: 'asd', game_id: 100).save
(12.5ms) BEGIN
Artwork Exists (92.1ms) SELECT 1 AS one FROM `artworks` WHERE `artworks`.`artwork_file_name` = BINARY 'asd' AND `artworks`.`game_id` = 100 LIMIT 1
SQL (64.1ms) INSERT INTO `artworks` (`game_id`, `artwork_file_name`, `created_at`, `updated_at`) VALUES (100, 'asd', '2017-02-17 10:25:25', '2017-02-17 10:25:25')
(17.9ms) COMMIT
=> true
2.3.1 :811 > Artwork.new(artwork_file_name: 'asd', game_id: 100).save
(0.2ms) BEGIN
Artwork Exists (0.5ms) SELECT 1 AS one FROM `artworks` WHERE `artworks`.`artwork_file_name` = BINARY 'asd' AND `artworks`.`game_id` = 100 LIMIT 1
(6.1ms) ROLLBACK
=> false
2.3.1 :812 > Artwork.new(artwork_file_name: 'asd', game_id: 101).save
(0.2ms) BEGIN
Artwork Exists (45.4ms) SELECT 1 AS one FROM `artworks` WHERE `artworks`.`artwork_file_name` = BINARY 'asd' AND `artworks`.`game_id` = 101 LIMIT 1
SQL (6.7ms) INSERT INTO `artworks` (`game_id`, `artwork_file_name`, `created_at`, `updated_at`) VALUES (101, 'asd', '2017-02-17 10:26:05', '2017-02-17 10:26:05')
(6.3ms) COMMIT
=> true
2.3.1 :813 >
事實證明這是Devise的“可驗證”行為,它添加了它自己對電子郵件字段的唯一驗證。
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