CODEWITHSUNDEEP
ruby-on-railsrails-engines
margo
margo

Reputation: 2927

Rails 4 engine nested module not being included with uninitialized constant (NameError)

I have a nested module set up as a base helper method which is not getting included in the app that uses the engine.

in lib/mol/blog/blog.rb

require "mol/blog/engine"

module Mol
  module Blog
    module Categories
      def self.included(base)
        base.helper_method :categories
      end

      def categories
        Mol::Cms::Category.all
      end
    end
  end
end

In the engine's spec/dummy application_controller

class ApplicationController < ActionController::Base
  protect_from_forgery
  include Mol::Blog::Categories
end

This works fine and the categories appear as expected. However, when I try to use the engine in a different app, the Categories module is not being included.

in the app's application controller

class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception

  include Mol::Blog::Categories
end

In the rails console, the error is uninitialized constant Mol::Blog::Category (NameError)

Mol::Blog is defined, no error or anything. Why is the Categories module not being recognised?

Upvotes: 0

Views: 756

Answers (1)

chumakoff
chumakoff

Reputation: 7024

Your app does not know about Mol::Blog::Categories module. You should require it in the "mol/blog/engine.rb" file or in the "mol/blog.rb" file.

# mol/blog.rb

require "mol/blog/categories"    

module Mol
  module Blog
   # ...
  end
end

Upvotes: 0

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