ruby-on-rails - Rails 夹具关系不存在

Question

Rails 4.1 应用程序。我能够解决它，但对它为什么不起作用感兴趣:

class NotificationSettings < ActiveRecord::Base
  belongs_to :user
end

class User < ActiveRecord::Base
  has_one :notification_settings
end

这不起作用:

# test/fixtures/notification_settings.yml

wilmas_notification_settings:
  user: wilma
  checkin_comments: false
  checkin_comments_schedule: instant

这确实有效:

# test/fixtures/notification_settings.yml

wilmas_notification_settings:
  user_id: wilma
  checkin_comments: false
  checkin_comments_schedule: instant

一切都表明这是 belongs_to 的问题。 ，但我很困惑。

错误是:

ActiveRecord::StatementInvalid: PG::UndefinedColumn: ERROR:  column "user" of relation "notification_settings" does not exist
LINE 1: INSERT INTO "notification_settings" ("user", "checkin_commen...
                                             ^
: INSERT INTO "notification_settings" ("user", "checkin_comments", "checkin_comments_schedule") VALUES (550831404, 'f', 'instant')

Answer 1

原来是 notification_settings 的复数形式正在扔掉它。这修复了它:

ActiveSupport::Inflector.inflections(:en) do |inflect|
  inflect.uncountable %w(notification_settings)
end