从rails 4.0.0升级后，Rails 4.1.0未定义的方法`call'

Question

您好我已经从rails 4.0.0升级到Rails 4.1.0

现在我收到了这个错误：

删除时

.active

它有效...但为什么？我该如何解决这个问题？

course.rb

  self.inheritance_column = :_type_disabled
  has_and_belongs_to_many :clients, :join_table => :clients_courses  # TODO c
  has_many :memberships, :dependent => :destroy
  has_many :users, :through => :memberships

  has_many :lessons,
        -> {order "lessons.sort ASC, lessons.start_date"},
        :dependent => :destroy,
        :foreign_key => :course_object_id

  scope :active, where(:active => true)
  scope :inactive, where(:active => false)

Answer 1

Change you course.rb code to：

  scope :active, -> { where(:active => true) }
  scope :inactive, -> { where(:active => false) }

Answer 2

course.rb中的

You should provide lambda to the scope：

scope :active, -> { where active: true }
scope :inactive, -> { where active: false }