instance method `url_for`

Ruby on Rails 2.3.18

Since v2.2.3 Last seen in v3.2.22.5

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5

Compare with:

url_for(options = {})

Returns the URL for the set of options provided. This takes the same options as url_for in Action Controller (see the documentation for ActionController::Base#url_for). Note that by default :only_path is true so you’ll get the relative /controller/action instead of the fully qualified URL like example.com/controller/action.

When called from a view, url_for returns an HTML escaped url. If you need an unescaped url, pass :escape => false in the options.

Options

:anchor - Specifies the anchor name to be appended to the path.
:only_path - If true, returns the relative URL (omitting the protocol, host name, and port) (true by default unless :host is specified).
:trailing_slash - If true, adds a trailing slash, as in “/archive/2005/”. Note that this is currently not recommended since it breaks caching.
:host - Overrides the default (current) host if provided.
:protocol - Overrides the default (current) protocol if provided.
:user - Inline HTTP authentication (only plucked out if :password is also present).
:password - Inline HTTP authentication (only plucked out if :user is also present).
:escape - Determines whether the returned URL will be HTML escaped or not (true by default).

Relying on named routes

If you instead of a hash pass a record (like an Active Record or Active Resource) as the options parameter, you’ll trigger the named route for that record. The lookup will happen on the name of the class. So passing a Workshop object will attempt to use the workshop_path route. If you have a nested route, such as admin_workshop_path you’ll have to call that explicitly (it’s impossible for url_for to guess that route).

Examples

<%= url_for(:action => 'index') %>
# => /blog/

<%= url_for(:action => 'find', :controller => 'books') %>
# => /books/find

<%= url_for(:action => 'login', :controller => 'members', :only_path => false, :protocol => 'https') %>
# => https://www.railsapplication.com/members/login/

<%= url_for(:action => 'play', :anchor => 'player') %>
# => /messages/play/#player

<%= url_for(:action => 'checkout', :anchor => 'tax&ship') %>
# => /testing/jump/#tax&amp;ship

<%= url_for(:action => 'checkout', :anchor => 'tax&ship', :escape => false) %>
# => /testing/jump/#tax&ship

<%= url_for(Workshop.new) %>
# relies on Workshop answering a new_record? call (and in this case returning true)
# => /workshops

<%= url_for(@workshop) %>
# calls @workshop.to_s
# => /workshops/5

<%= url_for("http://www.example.com") %>
# => http://www.example.com

<%= url_for(:back) %>
# if request.env["HTTP_REFERER"] is set to "http://www.example.com"
# => http://www.example.com

<%= url_for(:back) %>
# if request.env["HTTP_REFERER"] is not set or is blank
# => javascript:history.back()

Parameters

options opt = {}

Source

# File actionpack/lib/action_view/helpers/url_helper.rb, line 76
      def url_for(options = {})
        options ||= {}
        url = case options
        when String
          escape = true
          options
        when Hash
          options = { :only_path => options[:host].nil? }.update(options.symbolize_keys)
          escape  = options.key?(:escape) ? options.delete(:escape) : true
          @controller.send(:url_for, options)
        when :back
          escape = false
          @controller.request.env["HTTP_REFERER"] || 'javascript:history.back()'
        else
          escape = false
          polymorphic_path(options)
        end

        escape ? escape_once(url).html_safe : url
      end

Defined in actionpack/lib/action_view/helpers/url_helper.rb line 76 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionView::Helpers::UrlHelper

Signature

Options

Relying on named routes

Examples

Parameters