现有名称的NameError

Question

我在执行应用程序时遇到此NameError.

NameError in CountriesController#index
undefined local variable or method `country_code' for Country(id: integer, name: string, country_code: string):Class

这是代码中的某个地方,但我不明白.我有我的country_code,但它说它不存在.

class Country < ActiveRecord::Base
   validates country_code, presence: true
   validates name, presence: true
   has_and_belongs_to_many :groups 

有谁知道如何解决这一问题？

Answer 1

class Country < ActiveRecord::Base
validates :country_code, presence: true
validates :name, presence: true
has_and_belongs_to_many :groups 

您需要创建变量符号