Module: ActionController::UrlWriter

Defined in:
lib/action_controller/url_rewriter.rb

Overview

Write URLs from arbitrary places in your codebase, such as your mailers.

Example:

 class MyMailer
   include ActionController::UrlWriter
   default_url_options[:host] = 'www.basecamphq.com'

   def (token)
     url_for(:controller => 'signup', action => 'index', :token => token)
   end
end

In addition to providing url_for, named routes are also accessible after including UrlWriter.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object

:nodoc:



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# File 'lib/action_controller/url_rewriter.rb', line 26

def self.included(base) #:nodoc:
  ActionController::Routing::Routes.named_routes.install base
  base.mattr_accessor :default_url_options
  base.default_url_options ||= default_url_options
end

Instance Method Details

#url_for(options) ⇒ Object

Generate a url with the provided options. The following special options may effect the constructed url:

* :host Specifies the host the link should be targetted at. This option
  must be provided either explicitly, or via default_url_options.
* :protocol The protocol to connect to. Defaults to 'http'
* :port Optionally specify the port to connect to.



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# File 'lib/action_controller/url_rewriter.rb', line 40

def url_for(options)
  options = self.class.default_url_options.merge(options)
  
  url = ''
  unless options.delete :only_path
    url << (options.delete(:protocol) || 'http')
    url << '://'
    
    raise "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" unless options[:host]
    url << options.delete(:host)
    url << ":#{options.delete(:port)}" if options.key?(:port)
  else
    # Delete the unused options to prevent their appearance in the query string
    [:protocol, :host, :port].each { |k| options.delete k }
  end
  anchor = "##{options.delete(:anchor)}" if options.key?(:anchor)
  url << Routing::Routes.generate(options, {})
  return "#{url}#{anchor}"
end