如何编写跨越模型,控制器和视图的Rails mixin

module CrossSiteMixin
  def cross_site_method
    # 在这里添加你的代码
  end

  def self.included(base)
    base.helper_method :cross_site_method
  end
end

# app/models/application_record.rb
class ApplicationRecord< ActiveRecord::Base
  include CrossSiteMixin
end

# app/controllers/application_controller.rb
class ApplicationController< ActionController::Base
  include CrossSiteMixin
end

# app/views/layouts/application.html.erb
<%= cross_site_method %>

class MyController< ApplicationController
  def index
    @data = cross_site_method
  end
end

<%= cross_site_method %>

class MyModel< ApplicationRecord
  def some_method
    cross_site_method
  end
end