Facebooker talk - Jan 2009 - fb_sig_canvas_user

Hi all,

I''ve got myself a bit confused over fb_sig_canvas_user and I''m
hoping
some of the seasoned facebook devs can clear it up.
>From reading the facebook wiki, it seems like fb_sig_user is the main
parameter to check for the logged in user ID when a user has installed
the app. However, it seems that fb_sig_canvas_user is passed to my
URLs (instead of fb_sig_user) when a user is logged in to facebook but
has not authorized my app.

So to determine the authoritative "current user" with facebooker,
should I simply be doing the following?

if facebook_params[''user''] != 0
  return facebook_params[''user'']
end
if facebook_params[''canvas_user''] != 0
  return facebook_params[''canvas_user'']
end
return nil

Or are there also other conditions (or user parameters!) I should be
watching out for?

Bear in mind that I''m letting users look at my pages without forcing
them to install/authorize my application.

Regards,
Lee.


-- 
Lee Mallabone.
http://apps.facebook.com/headhunting/

Hi Lee,

I swore I used to get this variable, but I don''t seem to any more.  Are
you really getting the canvas_user for *any* unallowed user?

-- 
Matthew Beale :: 607 227 0871
Resume & Portfolio @ http://madhatted.com

On Mon, 2009-01-26 at 11:50 +0000, Lee Mallabone wrote:
> Hi all,
> 
> I''ve got myself a bit confused over fb_sig_canvas_user and
I''m hoping
> some of the seasoned facebook devs can clear it up.
> 
> >From reading the facebook wiki, it seems like fb_sig_user is the main
> parameter to check for the logged in user ID when a user has installed
> the app. However, it seems that fb_sig_canvas_user is passed to my
> URLs (instead of fb_sig_user) when a user is logged in to facebook but
> has not authorized my app.
> 
> So to determine the authoritative "current user" with facebooker,
> should I simply be doing the following?
> 
> if facebook_params[''user''] != 0
>   return facebook_params[''user'']
> end
> if facebook_params[''canvas_user''] != 0
>   return facebook_params[''canvas_user'']
> end
> return nil
> 
> Or are there also other conditions (or user parameters!) I should be
> watching out for?
> 
> Bear in mind that I''m letting users look at my pages without
forcing
> them to install/authorize my application.
> 
> Regards,
> Lee.
> 
>