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:



23
24
25
26
27
 
# File 'lib/action_controller/url_rewriter.rb', line 23

def self.included(base) #:nodoc:
  ActionController::Routing::Routes.install_helpers 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 based on the options provided, default_url_options and the routes defined in routes.rb. The following options are supported:

  • :only_path If true, the relative url is returned. Defaults to false.

  • :protocol The protocol to connect to. Defaults to ‘http’.

  • :host Specifies the host the link should be targetted at. If :only_path is false, this option must be provided either explicitly, or via default_url_options.

  • :port Optionally specify the port to connect to.

  • :anchor An anchor name to be appended to the path.

Any other key(:controller, :action, etc…) given to url_for is forwarded to the Routes module.

Examples:

url_for :controller => 'tasks', :action => 'testing', :host=>'somehost.org', :port=>'8080'    # => 'http://somehost.org:8080/tasks/testing'
url_for :controller => 'tasks', :action => 'testing', :host=>'somehost.org', :anchor => 'ok', :only_path => true    # => '/tasks/testing#ok'
url_for :controller => 'tasks', :action => 'testing', :host=>'somehost.org', :number => '33'  # => 'http://somehost.org/tasks/testing?number=33'



47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/action_controller/url_rewriter.rb', line 47

def url_for(options)
  options = self.class.default_url_options.merge(options)
  
  url = ''

  unless options.delete :only_path
    url << (options.delete(:protocol) || 'http')
    url << '://' unless url.match("://") #dont add separator if its already been specified in :protocol 
    
    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 = "##{CGI.escape options.delete(:anchor).to_param.to_s}" if options.key?(:anchor)
  url << Routing::Routes.generate(options, {})
  url << anchor if anchor

  return url
end