Re: A general question about railstutorial.org sessions helper methods

[Frederick Cheung]

On Tuesday, October 23, 2012 2:11:31 PM UTC+1, Jean-David wrote:

module SessionsHelper

  def sign_in(user)
    cookies.permanent[:remember_token] = user.remember_token
    self.current_user = user
  end

def current_user=(user)
  @current_user = user
end

def current_user
  @current_user ||= User.find_by_remember_token(cookies[:remember_token])
end
end

What does self.current_user = user do?

It calls the current_user=(user) method passing user as a parameter, right? But do we need the user parameter? I got rid of it and it works fine, as far as I can see.

What does current_user=(user) do? 

And what/who calls current_user when?

Typically you're calling current_user, for example to check whether there is a logged in user, so that you know what user is creating comments, posts etc. 

As I read it, self.current_user= is just a bit of an optimisation - if the user has just signed in then you know what the current_user is so you can prime the cache (@current_user) with the user value you've been passed

Fred 

[Jean-David]

Hmm I'm still confused.

But thx for helping.

[Kevin McCaughey]

I am just about to finish chapter 7! So many times I have wished I could
grab a chat with another person doing the tutorial, it's a lonely
journey I found ;)

--
Posted via http://www.ruby-forum.com/.

[Jean-David]

Hi Ruby-Forum.com User,

You're not alone anymore... it's really a small world after all!

Good to know there's someone out there going through the same pain as you do :)

I'm using google talk, feel free to add me to your contacts.