[Facebooker-talk] Session key invalid or no longer valid

[Adeel Ahmad]

Funny I just realized that as your email popped up. Thanks again.

- Adeel


On Sun, Feb 1, 2009 at 1:32 PM, kevin lochner <klochner at gmail.com> wrote:

> it's only going to catch the exception in your controller, so make sure youload
> any needed data from facebook in the controller (rather than leaving
> it to the view - e.g., <%= facebook_session.user.name %>
>
> On Feb 1, 2009, at 4:26 PM, Adeel Ahmad wrote:
>
> Thanks, this looks like it should do well for now. However it's not
> catching the exception... must be some other config I have wrong. Odd.
>
> module Facebooker
>   module Rails
>     module Controller
>       include Facebooker::Rails::ProfilePublisherExtensions
>       def self.included(controller)
>         controller.extend(ClassMethods)
>         controller.before_filter :set_adapter
>         controller.before_filter :set_fbml_format
>         controller.helper_attr :facebook_session_parameters
>         controller.helper_method :request_comes_from_facebook?
>         controller.rescue_from Facebooker::Session::SessionExpired, :with
> => :facebook_session_expired
>       end
>
>       def facebook_session_expired
>           clear_fb_cookies!
>           clear_facebook_session_information
>           flash[:error] = "Your facebook session has expired."
>           redirect_to root_url
>       end
>
> - Adeel
>
>
>
>
> On Sun, Feb 1, 2009 at 11:09 AM, kevin lochner <klochner at gmail.com> wrote:
>
>> I'm using a rescue.  I tried advancing this discussion a couple weeks ago
>> - the problem is that to really *know* that the session is valid, you have
>> to try using it (i.e., hit the facebook rest server with a request).  I
>> think it's a waste to constantly ping the facebook server just to make
>> sure you don't get an invalid session error when you're not expecting it,
>> especially given that this scenario will be low-frequency with respect to
>> total requests.
>>
>> So here's what I did in facebooker/rails/controller.rb:
>>
>> module Facebooker
>>   module Rails
>>     module Controller
>>       def self.included(controller)
>>         controller.rescue_from Facebooker::Session::SessionExpired, :with
>> => :facebook_session_expired
>>       end
>>
>>       def facebook_session_expired
>>           clear_fb_cookies!
>>           clear_facebook_session_information
>>           flash[:error] = "Your facebook session has expired."
>>           redirect_to root_url
>>         end
>>
>> I'm hesitant to add this to facebooker because i'm not convinced everyone
>> will want to do it this way, and
>> it probably means adding another parameter like "expired_session_url" so
>> that this exception handling
>> works out of the box (since not everyone will redirect to root_url).
>>
>>  - kevin
>>
>>
>> On Feb 1, 2009, at 12:51 PM, Adeel Ahmad wrote:
>>
>> This may be related to Aaron's question on Jan. 30. However in my case I
>> doing Facebook Connect using Facebooker for my site.
>> Following the Facebook Connect tutorial it does create a session and show
>> the user as logged in. For now I have the same 'fb' controller just to demo
>> log in.
>> However if the user logs out at facebook.com and then refreshes fb/index
>> on my site, I get "Session key invalid or no longer valid" on the line that
>> outputs @facebook_session.user.name. Just FYI if I output
>> @facebook_session.user.to_s it does give me the uid.
>> If you look at the stack trace below you'll notice that it passes through
>> a number of actions that test for existence and validity of the session. It
>> has a problem in the Error class of parser.rb. I would think it should catch
>> the problem a lot earlier than in parser.rb.
>> Any thoughts on how to troubleshoot and/or workaround this? I'm on Rails
>> 2.1.1.
>>
>> ========================================
>>  Facebooker::Session::SessionExpired in Fb#index
>>
>> Showing fb/index.html.erb where line #10 raised:
>>
>> Session key invalid or no longer valid
>>
>> Extracted source (around line #10):
>>
>> 7: <%= fb_login_button%>
>> 8:
>> 9: <% if facebook_session %>
>> 10:   <h2>You are logged in as <%= facebook_session.user.name %></h2>
>> 11: <% else %>
>> 12:   <h2>You are not logged in!</h2>
>> 13: <% end %>
>>
>> vendor/plugins/facebooker/lib/facebooker/parser.rb:487:in `process'
>> vendor/plugins/facebooker/lib/facebooker/parser.rb:15:in `parse'
>> vendor/plugins/facebooker/lib/facebooker/service.rb:20:in `post'
>> vendor/plugins/facebooker/lib/facebooker/session.rb:473:in
>> `post_without_logging'
>> vendor/plugins/facebooker/lib/facebooker/session.rb:484:in `post'
>> vendor/plugins/facebooker/lib/facebooker/logging.rb:27:in `log_fb_api'
>> vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:8:in
>> `realtime'
>> vendor/plugins/facebooker/lib/facebooker/logging.rb:27:in `log_fb_api'
>> vendor/plugins/facebooker/lib/facebooker/session.rb:483:in `post'
>> vendor/plugins/facebooker/lib/facebooker/models/user.rb:120:in `populate'
>> vendor/plugins/facebooker/lib/facebooker/model.rb:35:in `name'
>> app/views/fb/index.html.erb:10:in
>> `_run_erb_47app47views47fb47index46html46erb'
>>
>>
>> --
>> - Adeel
>>
>>
>>
>> _______________________________________________
>> Facebooker-talk mailing list
>> Facebooker-talk at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/facebooker-talk
>>
>>
>>
>
>
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