Session problem

Rails
1

Hello everyone,

I am just starting a project for school in RoR and I am a complete
n00b ^^
Here’s my problem :

I need to get the user’s login stored in the session but for some
reason I cannot.
Here’s my login method code :

def login
if request.post?
@user = User.find_by_username(params[:login])
if @user and @user.password_is? params[:password]
session[:user] = @user.id

       redirect_to :controller => 'games'

else
@auth_error = ‘Wrong username or password’
end
end
end

And here’s the code of my GamesController. User needs to be logged in
to access the games webpage (using check_auth method) and on that
page the user can create a new game (adding a record in the game
table,
with a few fields from the form filled by the user and a field with
the user’s
username, that’s why I need to get it from session[:user]).

before_filter :check_auth

def check_auth
unless session[:user]
flash[:error] = ‘You need to be logged in to access this panel’
redirect_to :controller => ‘users’, :action => ‘login’
end
end

def create
@game = Game.new(params[:game])
@user = User.find(session[:user])
@game.host = @user.username

respond_to do |format|
  if @game.save
    format.html { redirect_to(@game) }
    format.xml  { render :xml => @game, :status

=> :created, :location => @game }
else
format.html { render :action => “new” }
format.xml { render :xml => @game.errors, :status
=> :unprocessable_entity }
end
end
end

Thank you very much in advance for any help you could give,
I really need to get this working to finish my project ^^

Blaede from Belgium

2

To understand how to require an user to log in to complete certain
tasks, I would recomment you to read this excellent tutorial:

http://www.railsforum.com/viewtopic.php?id=14216

Regards,

Rey9999

3

Thank you very much for your answer Rey.
I took a look at the tutorial and it seems
very interesting indeed.

However, my application is very simple,
all pages are accessible by all, except one
(the games page) accessible by logged users
only.

This feature works as it is on my website,
my problem comes from the fact I have troubles
extracting information from the session[:user].
I need to access the fields of the logged @user.

My project must be finished by the 5th of June
so if someone could help me solve this problem
without re-designing my entire application,
I’d be really gratefull.

Thanks again

4

On May 30, 5:13 pm, Blaede [email protected] wrote:

This feature works as it is on my website,
my problem comes from the fact I have troubles
extracting information from the session[:user].
I need to access the fields of the logged @user.

You haven’t actually said what exactly goes wrong.

Fred

5

You haven’t actually said what exactly goes wrong.

Fred

[QUOTE]I need to get the user’s login stored in the session but for
some
reason I cannot. [/QUOTE]

On one hand I have : session[:user] = @user.id
and on the other hand (in another controller) I have : @user =
User.find(session[:user])
which if I am not mistaken should put in @user the session’s user.
But when in the next line I try to do : game.host = @user.username
(game has a field host containing a string) and then try to do a
game.save,
rails tells me the host field cannot be null…

6

Blaede wrote:

You haven’t actually said what exactly goes wrong.

Fred

[QUOTE]I need to get the user’s login stored in the session but for
some
reason I cannot. [/QUOTE]

that told us only, that “something” went wrong :wink:

On one hand I have : session[:user] = @user.id
and on the other hand (in another controller) I have : @user =
User.find(session[:user])
which if I am not mistaken should put in @user the session’s user.
But when in the next line I try to do : game.host = @user.username
(game has a field host containing a string) and then try to do a
game.save,
rails tells me the host field cannot be null…

better that.
if session[:user] would be empty, then the find would have told you,
that it can’t find a user without an id. so that id is stored in the
session.

so @user.username is nil or empty or doesn’t exist. maybe misspelled?

7

Hi Blaede,

Blaede wrote:

On one hand I have : session[:user] = @user.id
and on the other hand (in another controller)
I have : @user = User.find(session[:user])
which if I am not mistaken should put in
@user the session’s user.

It will put the object retrieved in your User.find into @user. Problem
is
the User.find is returning nil. So you need to figure out why that is.
A
three things come to mind right off the bat.

  1. It could be that session[:user] is nil because @user.id is nil when
    you
    set session[:user]. Do a puts right before you set session[:user] to
    check
    the value of @user.id in the console, and do likewise afterwards to see
    the
    value of session[:user]
  2. It could be that session[:user] is not an int, which is what
    User.find()
    expects. You can check that with session[:user].is_kind_of?(int) (check
    the
    syntax) or you can just force it with User.find(session[:user].to_int)
  3. It could be that you’re invoking the controller/method that uses
    session[:user] before the one that sets it.

Use puts to display the values as your app executes and you’ll figure
out
which it is, or what else it is if it’s not one of these.

HTH,
Bill