How to get request's target controller and action with Rails 3?

Question

In the application controller before filter.

class ApplicationController < ActionController::Base
  before_filter :authenticate

  def authenticate
    # How do we know which controller and action was targetted?
  end
end

http://stackoverflow.com/questions/2165665/how-do-i-get-the-current-url-in-ruby-on-rails — manish nautiyal, May 28 '13 at 06:43

score 87 · Accepted Answer · answered Mar 24 '11 at 11:48

87

class ApplicationController < ActionController::Base
  before_filter :authenticate

  def authenticate
    # How do we know which controller and action was targetted?
    params[:controller]
    params[:action]
    # OR
    controller.controller_name
    controller.action_name    
  end
end

answered Mar 24 '11 at 11:48

fl00r

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I have got ready file with bunch of answers for standart questions :) – fl00r Mar 25 '11 at 10:44
We used to use `params[:action]` just fine. But for some reason in the last month or so this stopped working. Now it comes up as an empty hash. However, `controller.action_name` continues to work. We're on Rails 3.2. Not sure why it stopped working, but I would suggest using `controller.action_name` as it seems more reliable. – Joshua Pinter Jan 22 '18 at 16:40

score 16 · Answer 2 · answered Oct 13 '12 at 14:20

16

In Rails 3.2 you no longer need to call controller.action_name explicitly instead just "action_name".

before_filter :check_if_locked


def check_if_locked
  puts action_name
  puts controller_name
end

answered Oct 13 '12 at 14:20

Minimul

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I like this better than the params reference because it strips the path prefix off and just gives the controller name. – Daniel Nalbach Jul 22 '20 at 21:37

Nazar Hussain · Answer 3 · 2012-08-01T17:12:40.467

13

You can get full url object using

url = Rails.application.routes.recognize_path(request.env['PATH_INFO'])

now you can get components as

url[:controller]

url[:action]

By default you can also use params[:controller] and params[:action] respectively during request/response life cycle.

edited Aug 01 '12 at 17:12

answered Mar 24 '11 at 11:46

Nazar Hussain

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Handy outside request / response cycle, but absolutely un-necessary during it. – Swanand Mar 24 '11 at 15:29
This code is really handy to parse a url stored in some string variable. – Nazar Hussain Mar 25 '11 at 03:50
Edited the answer for way to use within request/response cycle. – Nazar Hussain Aug 01 '12 at 17:13
1

This will only work for requests of HTTP GET method. To support all methods, use `url = Rails.application.routes.recognize_path(request.env['PATH_INFO'], { :method => request.env['REQUEST_METHOD'] })`. – Chuck Batson Oct 26 '16 at 23:13

score 5 · Answer 4 · answered Mar 03 '15 at 08:26

5

request.parameters['controller']
request.parameters['action']

answered Mar 03 '15 at 08:26

Moin Haidar

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How to get request's target controller and action with Rails 3?

4 Answers4

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