Call Module function from Controller (NoMethodError)

问题

So I have a module "MiddleMan" I am able to call it just fine in the rails console but in the controller I am getting a NoMethodError

In the controller I have:

class SignUpController < ApplicationController
  include MiddleMan
  def page_one
      @package = MiddleMan::read_catalog("a", "b", "c")
  end
end

And in the middleman.rb module I have:

module MiddleMan
  def read_catalog(package, payment, coupon)
    Package.new(:price => "4.99")
  end
end

Any thoughts?

回答1:

Since you included the module the instance method read_catalog is added to your Class, so you can call it directly:

class SignUpController < ApplicationController
  include MiddleMan
  def page_one
      @package = read_catalog("a", "b", "c")
  end
end

来源：https://stackoverflow.com/questions/6604272/call-module-function-from-controller-nomethoderror