Dynamically include modules in another module in Rails

Question

I want to dynamically include all modules within a certain folder into this other module. My code is as follows:

module Extensions
  module ProductExtension
    def add_included_extensions
      extensions = Pathname.glob("lib/extensions/merchant/*.rb")
        .map(&:basename)
        .collect{|x| 
          x.to_s.gsub(".rb", "")
          .titleize.gsub(" ","")
        }

      extensions.each do |merchant|
        include "Extensions::MerchantExtensions::#{merchant}".constantize
      end
    end
    def add_items
      add_included_extensions
      Merchant.all.each do |merchant|
        send("add_#{merchant.name.downcase}_items")
      end
    end
  end
end

However it doesn't seem to be actually including the files because when I call the send method, it says the method it's calling doesn't exist. Any idea what I could be doing wrong?

Have only fast look - you use titleize instead camelize

mikdiet
– mikdiet

2013-05-10 21:43:01 +00:00
Commented May 10, 2013 at 21:43 — mikdiet
– mikdiet, Commented May 10, 2013 at 21:43

Sebastián Palma · Accepted Answer · 2019-04-05 11:23:29Z

16

The problem is you include your modules inside instance methods, so they are not included in the class.

Try:

self.class.send(:include, "Extensions::MerchantExtensions::#{merchant}".constantize)

edited Apr 5, 2019 at 11:23

Sebastián Palma

33.6k6 gold badges45 silver badges65 bronze badges

answered May 10, 2013 at 21:48

mikdiet

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