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将实例变量初始化为数组-Ruby_Ruby_Ruby On Rails 3.1_Initialization_Instance Variables - Fatal编程技术网

将实例变量初始化为数组-Ruby

将实例变量初始化为数组-Ruby,ruby,ruby-on-rails-3.1,initialization,instance-variables,Ruby,Ruby On Rails 3.1,Initialization,Instance Variables,我尝试将变量初始化为数组,如下所示: class Arch < ActiveRecord::Base attr_accessor :name1 def initialize @name1 = [] end def add_name1(t) @name1 << t end end class-Arch

我尝试将变量初始化为数组,如下所示:

  class Arch < ActiveRecord::Base  
  attr_accessor :name1

    def initialize
      @name1 = []
    end

    def add_name1(t)
      @name1 << t
    end

  end
class-Arch@name1您正在覆盖
ActiveRecord::Base
initialize
方法。创建类的新实例时,只调用initilize。
ActiveRecord::Base
将创建的所有实例变量都未初始化,并且
#inspect
失败。为了解决这个问题,您需要调用基类的构造函数(使用
super

class-Arch@name1您正在覆盖ActiveRecord的
initialize
方法。尝试使用
super

def initialize(*args, &block)
   super 
   @name1 = []
end
class Arch < ActiveRecord::Base  

  attr_accessor :name1
  def initialize
    super
    @name1 = []
  end

  def add_name1(t)
    @name1 << t
  end
end
def initialize(*args, &block)
   super 
   @name1 = []
end