ActiveModel::MassAssignmentSecurity::BlackList:Class:的NoMethodError -未定义的方法`by_email

Question

我有一个email_address对象，我正在尝试检查它是否在该特定域的黑名单上。我这样叫它：

elsif @email.blacklisted?(@domain.id)
  do something ...
end

我得到了一个错误：

NoMethodError - undefined method `by_email' for ActiveModel::MassAssignmentSecurity::BlackList:Class:

我还尝试执行.find_all_by_id，而不是使用我创建的黑名单作用域。然而，同样的错误。这快把我逼疯了，任何想法都会令人惊叹！

EmailAddress类

class EmailAddress < ActiveRecord::Base
  attr_accessible :email, :global_blacklist

  has_many :transactions
  has_many :black_lists
  has_many :opt_outs

  validates :email, :presence => true,
          :uniqueness => true
  validates :global_blacklist, :acceptance => true

  def blacklisted?(domain_id)
    black_lists = BlackList.by_email(self.id).by_domain(domain_id)

    black_lists.count > 0
  end
end

BlackList类

class BlackList < ActiveRecord::Base

  attr_accessible :domain_id, :email_address_id, :date_added

  belongs_to :domain
  belongs_to :email_address

  validates :domain_id, :presence => true
  validates :email_address_id, :presence => true
  validates :date_added, :presence => true

  GLOBAL_BLACK_LIST_THRESHOLD = 2

  scope :by_domain, ->(domain_id) { where('domain_id = ?', domain_id) }
  scope :by_email, ->(email_id) { where('email_address_id = ?', email_id) }


end

Answer 1

以防其他人也有这个问题...

类名BlackList (大写L)似乎是一个ActiveModel类名。

我将类名改为Blacklist (一个单词而不是两个)，问题就解决了。