CODEWITHSUNDEEP
rubyrspec
Clintm
Clintm

Reputation: 4867

Invoke a function on a ruby module

Here's my folder structure:

root
  - app
    - helpers
      - application_helper.rb
  - test
    - helpers
      - application_helper_test.rb

Here's what application_helper.rb looks like:

module ApplicationHelper
  def replace_links_with_urls(text)
    text.gsub(%r{<a[^>]*? href=['"]([^'"]*)?['"].*?>(.*?)</a>}m, "\\2 ( \\1 )")
  end
end

Here's what application_helper_test.rb looks like:

   require File.expand_path("../../../app/helpers/application_helper", __FILE__)
    describe ApplicationHelper do
      describe "#replace_links_with_urls" do
        it "does not replace non-links" do
          ApplicationHelper::replace_links_with_urls("ABC <b>bold</b>").should == "ABC <b>bold</b>"
        end
      end
  end

The error I get is:

NoMethodError: undefined method `replace_links_with_urls' for ApplicationHelper:Module

What am I doing wrong?

Upvotes: 0

Views: 27

Answers (1)

Esteban Garcia
Esteban Garcia

Reputation: 2273

You need to declare your function using self, like this:

module ApplicationHelper
  def self.replace_links_with_urls(text)
    text.gsub(%r{<a[^>]*? href=['"]([^'"]*)?['"].*?>(.*?)</a>}m, "\\2 ( \\1 )")
  end
end

Then you can call it using:

ApplicationHelper.replace_links_with_urls("asd")

Or declare it without using self, include the module using

include ApplicationHelper

And call the function

So your test will be:

require File.expand_path("../../../app/helpers/application_helper", __FILE__)
include ApplicationHelper
describe ApplicationHelper do
    describe "#replace_links_with_urls" do
        it "does not replace non-links" do
            ApplicationHelper::replace_links_with_urls("ABC <b>bold</b>").should == "ABC <b>bold</b>"
        end
    end
end

Also, check that the code you posted the replace_links_with_urls function has two def, don't know if you have that same typo in your code or just here.

Upvotes: 1

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