如何在Rails 4上使用RuboCop::Cop::Rails::ApplicationRecord

Question

我想在Rails 4上使用ApplicationRecord Cop，我已经添加了'self.abstract_class = true‘。

class ApplicationRecord < ActiveRecord::Base
  self.abstract_class = true
end

这个文件被写成“minimum_target_rails_version 5.0”。

https://github.com/rubocop-hq/rubocop-rails/blob/master/lib/rubocop/cop/rails/application_record.rb

所以我创建了custom_cop，如下所示。

# frozen_string_literal: true

module CustomCops
  # @example
  #
  #  # good
  #  class Rails5Model < ApplicationRecord
  #    # ...
  #  end
  #
  #  # bad
  #  class Rails4Model < ActiveRecord::Base
  #    # ...
  #  end
  class MustApplicationRecord < RuboCop::Cop::Cop
    MSG = 'Models should subclass `ApplicationRecord`.'
    SUPERCLASS = 'ApplicationRecord'
    BASE_PATTERN = '(const (const nil? :ActiveRecord) :Base)'
    include RuboCop::Cop::EnforceSuperclass
    

    def autocorrect(node)
      lambda do |corrector|
        corrector.replace(node.source_range, self.class::SUPERCLASS)
      end
    end
  end
end

但我在运行rspec时遇到错误，如下所示。

Failure/Error:
         class MustApplicationRecord < RuboCop::Cop::Cop
           MSG = 'Models should subclass `ApplicationRecord`.'
           SUPERCLASS = 'ApplicationRecord'
           BASE_PATTERN = '(const (const nil? :ActiveRecord) :Base)'
           include RuboCop::Cop::EnforceSuperclass


           def autocorrect(node)
             lambda do |corrector|
               corrector.replace(node.source_range, self.class::SUPERCLASS)

NameError:
         uninitialized constant CustomCops::RuboCop

你知道如何解决这个错误吗，或者其他方法(比如覆盖'minimum_target_rails_version 5.0‘到'minimum_target_rails_version 4.0’)？

版本

Rails 4.2.8
ruby 2.6.6
rubocop 0.80.1
RSpec 3.9

Answer 1

该错误将告诉您未定义RuboCop。

在你定义你的警察之前，你需要在某个地方使用require 'rubocop'。