method

redirect_to

v2.2.1 - Show latest stable - 6 notes - Class: ActionController::Base

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What's this?

redirect_to(options = {}, response_status = {}) protected

Redirects the browser to the target specified in options. This parameter can take one of three forms:

Hash - The URL will be generated by calling url_for with the options.
Record - The URL will be generated by calling url_for with the options, which will reference a named URL for that record.
String starting with protocol:// (like http://) - Is passed straight through as the target for redirection.
String not containing a protocol - The current protocol and host is prepended to the string.
:back - Back to the page that issued the request. Useful for forms that are triggered from multiple places. Short-hand for redirect_to(request.env["HTTP_REFERER"])

Examples:

  redirect_to :action => "show", :id => 5
  redirect_to post
  redirect_to "http://www.rubyonrails.org"
  redirect_to "/images/screenshot.jpg"
  redirect_to articles_url
  redirect_to :back

The redirection happens as a "302 Moved" header unless otherwise specified.

Examples:

  redirect_to post_url(@post), :status=>:found
  redirect_to :action=>'atom', :status=>:moved_permanently
  redirect_to post_url(@post), :status=>301
  redirect_to :action=>'atom', :status=>302

When using redirect_to :back, if there is no referrer, RedirectBackError will be raised. You may specify some fallback behavior for this case by rescuing RedirectBackError.

Show source

# File actionpack/lib/action_controller/base.rb, line 1056
      def redirect_to(options = {}, response_status = {}) #:doc:
        raise ActionControllerError.new("Cannot redirect to nil!") if options.nil?

        if options.is_a?(Hash) && options[:status]
          status = options.delete(:status)
        elsif response_status[:status]
          status = response_status[:status]
        else
          status = 302
        end

        response.redirected_to = options
        logger.info("Redirected to #{options}") if logger && logger.info?

        case options
          # The scheme name consist of a letter followed by any combination of
          # letters, digits, and the plus ("+"), period ("."), or hyphen ("-")
          # characters; and is terminated by a colon (":").
          when %r{^\w[\w\d+.-]*:.*}
            redirect_to_full_url(options, status)
          when String
            redirect_to_full_url(request.protocol + request.host_with_port + options, status)
          when :back
            if referer = request.headers["Referer"]
              redirect_to(referer, :status=>status)
            else
              raise RedirectBackError
            end
          else
            redirect_to_full_url(url_for(options), status)
        end
      end

March 10, 2012

3 thanks

flash messages

In rails 3.1 the following does not work for me

redirect_to { :action=>'atom' }, :alert => "Something serious happened"

Instead, you need to use the following syntax (wrap with parens)

redirect_to({ :action=>'atom' }, :alert => "Something serious happened")

January 8, 2010

1 thank

Status Codes

Full detail: http://en.wikipedia.org/wiki/List_of_HTTP_status_codes

100 - Continue
101 - Switching Protocols
200 - OK
201 - Created
202 - Accepted
203 - Non-Authoritative Information
204 - No Content
205 - Reset Content
206 - Partial Content
300 - Multiple Choices
301 - Moved Permanently
302 - Found
303 - See Other
304 - Not Modified
305 - Use Proxy
306 - No Longer Used
307 - Temporary Redirect
400 - Bad Request
401 - Not Authorised
402 - Payment Required
403 - Forbidden
404 - Not Found
405 - Method Not Allowed
406 - Not Acceptable
407 - Proxy Authentication Required
408 - Request Timeout
409 - Conflict
410 - Gone
411 - Length Required
412 - Precondition Failed
413 - Request Entity Too Large
414 - Request URI Too Long
415 - Unsupported Media Type
416 - Requested Range Not Satisfiable
417 - Expectation Failed
500 - Internal Server Error
501 - Not Implemented
502 - Bad Gateway
503 - Service Unavailable
504 - Gateway Timeout
505 - HTTP Version Not Supported

March 3, 2009

0 thanks

Specify controller

If needed, you can also specify a controller.

redirect_to :controller => 'post', :action => 'index'

October 1, 2009

0 thanks

This code prevent's frome redirect_to(:back) looping

Prevent redirect_to(:back) looop

begin

# loop check
if session[:last_back] != request.env['HTTP_REFERER']
  redirect_to(:back)
  session[:last_back] = request.env['HTTP_REFERER']
else
  # raise on error
  raise ActionController::RedirectBackError
end

rescue ActionController::RedirectBackError

# fallback on loop or other :back error
redirect_to(:action => :index)

end

November 30, 2009

0 thanks

You can specify the format as well

You can also specify the format (in case you need to redirect a request coming in one format to another format):

redirect_to :action => 'show', :format => 'html'

July 17, 2010

0 thanks

redirect_to :root

You can redirect to your main page using

redirect_to :root

Make sure to configure to root route first:

http://guides.rubyonrails.org/routing.html#using-maproot

redirect_to

Related methods

flash messages

Status Codes

Specify controller

This code prevent's frome redirect_to(:back) looping

Prevent redirect_to(:back) looop

You can specify the format as well

redirect_to :root