How to use Rails URL helpers in any Ruby class

In Rails 3+, you can use:

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class Project
  delegate :url_helpers, to: 'Rails.application.routes'

  def project_path
    url_helpers.project_path(self)
  end
end

For Rails 2, use the attached Modularity trait. It will give any Ruby class a method #url_writer, on which you can call URL helpers:

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class Foo
  does 'write_urls'
  def self.class_method
    url_writer.session_path
  end
  def instance_method
    url_writer.project_path(5)
  end
end

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write_urls_trait.rb

Owner of this card:

Henning Koch

makandra.com

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Last edit:: over 2 years ago

by Henning Koch
Attachments:: write_urls_trait.rb
Keywords:: route, routes, from, model
About this deck:: We are makandra and do test-driven, agile Ruby on Rails software development.; License for source code

Posted by Henning Koch to makandra dev

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How to use Rails URL helpers in any Ruby class

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