未初始化的常量 Admin::ModeratorsController::ModeratorInteractor

Question

Hi i am working on a RoR project with ruby-2.3.0 and rails 4. I am trying to call a method of interactor from controller. My controller is inside the Admin directory as follows:

class Admin::ModeratorsController < Admin::ApplicationController
  include Interactor

  def index
    ModeratorInteractor.find_abc(params)
  end
end

My interactor is:-

# frozen_string_literal: true

class ModeratorInteractor
  def self.find_abc(params)
    User.all
  end
end

When i run my code i got an error uninitialized constant Admin::ModeratorsController::ModeratorInteractor . I also try to include the Interactor:-

include Interactor

Please help how to fix it.Thanks in advance.

Answer 1

You need to define ModeratorInteractor as module to include it in your controller:

module ModeratorInteractor
  def self.find_abc(params)
    User.all
  end
end

Then you need to ensure that the module is loaded properly:

# in application.rb
config.autoload_paths += %W("#{config.root}/lib") # path to your module

Or you can also use require instead of autoload_paths :

require "#{Rails.root}/lib/modeator_interactor"

Then in your controller, you can include it:

include ModeratorInteractor

Answer 2

First, you need to include Interactor in your ModeratorInteractor , also you need to define a call method, not find_abc which will not work and it will throw and error of undefined method , so your final interactor will look like this

# frozen_string_literal: true

class ModeratorInteractor
  include Interactor

  def self.call
    params = context.params
  end
end

and you will call it as

ModeratorInteractor.call(params: params)

Voila.