Post Redirect Get pattern in Rails

Question

How can I implement PRG in Rails?

I used PRG in Rails, but I am not totally convinced it\'s right. I was wondering is there any better way to handle it in Rails?

Answer 1

Use the session, Luke

The way you implemented it in your blog post is quite fine, however you may want to use session instead of flash to store your @user and optionally use the ActiveRecord session store to keep cookies from getting bloated.

From ActionController::Base documentation

ActiveRecord::SessionStore - Sessions are stored in your database, which works better than PStore with multiple app servers and, unlike CookieStore, hides your session contents from the user. To use ActiveRecord::SessionStore, set

config.action_controller.session_store = :active_record_store

in your config/environment.rb and run rake db:sessions:create.

So you should…

class UsersController < ApplicationController

  def new
    @user = session[:user] || User.new
  end

  def create
    @user = User.new(params[:user])

    if @user.save
      # clears previously stored user if there is any
      session[:user] = nil
      redirect_to '/'
    else
      session[:user] = @user
      redirect_to :action => :new
    end
  end
end