How to redirect to previous page in Ruby On Rails

Question

I have a page that lists all of the projects that has sortable headers and pagination   path   projects order asc amp page 3 amp sort code   I choose to edit one of the projects  path  projects 436 edit   When I click save on that page  it calls the projects controller   update method   After I update the code I want to redirect to the path that I was on before I clicked edit a specific project  In other words  I want to be on the same page with the same sorting   I saw link to  back  and thought that  back may work in redirect to  back   but that s a no go    puts YAML  dump  back   yields the following   back    Any ideas on How I could get this to work  It seems like a problem that would be easily solved  but I m new to RoR

User · Answer

Why does redirect to  back  not work for you  why is it a no go   redirect to  back  works like a charm for me  It s just a short cut for  redirect to request env  HTTP REFERER     http   apidock com rails ActionController Base redirect to  pre Rails 3  or http   apidock com rails ActionController Redirecting redirect to  Rails 3   Please note that redirect to  back  is being deprecated in Rails 5  You can use   redirect back fallback location   something   instead  see http   blog bigbinary com 2016 02 29 rails-5-improves-redirect to back-with-redirect-back html

User · Answer

In your edit action  store the requesting url in the session hash  which is available across multiple requests   session  return to      request referer   Then redirect to it in your update action  after a successful save   redirect to session delete  return to

User · Answer

request referer is set by Rack and is set as follows   def referer    env  HTTP REFERER          end   Just do a redirect to request referer and it will always redirect to the true referring page  or the root path         This is essential when passing tests that fail in cases of direct-nav to a particular page in which the controller throws a redirect to  back

User · Answer

In rails 5  as per the instructions in Rails Guides  you can use   redirect back fallback location  root path    The  back  location is pulled from the HTTP REFERER header which is not guaranteed to be set by the browser  Thats why you should provide a  fallback location

User · Answer

I like Jaime s method with one exception  it worked better for me to re-store the referer every time   def edit     session  return to    request referer       The reason is that if you edit multiple objects  you will always be redirected back to the first URL you stored in the session with Jaime s method   For example  let s say I have objects Apple and Orange  I edit Apple and session  return to  gets set to the referer of that action  When I go to edit Oranges using the same code  session  return to  will not get set because it is already defined   So when I update the Orange  I will get sent to the referer of the previous Apple edit action

User · Answer

This is how we do it in our application  def store location   session  return to    request fullpath if request get  and controller name     user sessions  and controller name     sessions  end  def redirect back or default default    redirect to session  return to     default  end   This way you only store last GET request in  return to session param  so all forms  even when multiple time POSTed would work with  return to

User · Answer

For those who are interested  here is my implementation extending MBO s original answer  written against rails 4 2 4  ruby 2 1 5      class ApplicationController  lt  ActionController  Base   after filter  set return to location    REDIRECT CONTROLLER BLACKLIST    w      sessions     user sessions             etc                def set return to location     return unless request get      return unless request format html      return unless  w show index edit  include  params  action       return if REDIRECT CONTROLLER BLACKLIST include  controller name      session  return to    request fullpath   end    def redirect back or default default path   root path      redirect to        session  return to  present   amp  amp  session  return to     request fullpath           session  return to    default path         end end

[ruby-on-rails] How to redirect to previous page in Ruby On Rails?

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