#363 Facebook Open Graph pro

Jul 02, 2012 | 11 minutes | Tools, Plugins, Deployment, Background Jobs

This episode builds on last week's episodes and shows how to integrate Facebook further through the Open Graph protocol. You will also learn how to tunnel your local server and move Facebook communication into a background process.

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xinming over 12 years ago

Thanks for the great episode as usual!
By the way, if we use passenger standalone instead of the default rails server, it will run the app in a multi-threaded environment. That can be a quick way to test something in development without the need to rely on background tasks.

Leo Romanovsky over 12 years ago

@rbates: one snag that I usually run into with facebook is exchanging access tokens when they expire. How do you prefer to deal with this?

Denis Savitsky about 12 years ago

In #360 Ryan used this:

          ruby
        
class SessionsController < ApplicationController
  def create
    user = User.from_omniauth(env["omniauth.auth"])
    session[:user_id] = user.id
    redirect_to root_url
  end

  def destroy
    session[:user_id] = nil
    redirect_to root_url
  end
end

class User < ActiveRecord::Base
  def self.from_omniauth(auth)
    where(auth.slice(:provider, :uid)).first_or_initialize.tap do |user|
      user.provider = auth.provider
      user.uid = auth.uid
      user.name = auth.info.name
      user.oauth_token = auth.credentials.token
      user.oauth_expires_at = Time.at(auth.credentials.expires_at)
      user.save!
    end
  end
end

eagsalazar over 12 years ago

I can't remember the details but I was having trouble with localtunnel so I wrote this little one liner that has been working perfectly for me for a while.

I have test callbacks from a few services configured use this url for development debugging.

          
#!/usr/bin/env bash
ssh -gtNR 3000:localhost:3000 you@yourserver.com

In case anyone else can use this.

Fred Kelly over 12 years ago

Is there a reason for not passing the whole user to the delayed method? i.e.
User.share_review(current_user, ...) that way it wouldn't be neccasary to call User.find again with the delayed method?

Tom Lehman over 12 years ago

better still, how about making share_review an instance method? e.g., current_user.share_review(movie) (also it should take a movie object, not a movie URL..)

Fred Kelly over 12 years ago

I think it may be that it's more efficient to pass simple types to delayed methods as they get serialized and stored in the jobs table?

Denis Savitsky about 12 years ago

          ruby
        
u.facebook.put_connection("me", "cinematron:review", movie: "http://samples.ogp.me/457069940972565")

should be

          ruby
        
u.facebook.put_connections("me", "cinematron:review", movie: "http://samples.ogp.me/457069940972565")

Thiago Ganzarolli about 12 years ago

Great episode. One gold tip for me was localtunnel. Awesome and very handy!

Alex S about 12 years ago

I used code as described in this episode:

          ruby
        
ser.facebook.put_connections("me", "my_apps_namespace:recommend", event: event_url)

It works fine in sandbox mode, however when trying to submit for approval I get the following:

our code is currently configured to publish a stream story. You must change your code so that when the test user triggers the action it produces an open graph story. Please make the appropriate changes and resubmit.

Had anyone else experienced anything like that?

Davide Manea almost 12 years ago

Hi Ryan, in the ASCIIcast "rake jobs:works" should be "rake jobs:work" ?
Thanks for this great episode!

Mark Kremer almost 12 years ago

You're absolutely right, I've corrected it :)

Garrett Davis almost 12 years ago

Just a head's up, not sure if it's a change, however unsubmitted Open Graph action types (i.e. review) can only be tested with an app Administrator or Developers account. Test accounts won't work. I was getting this error:

          
        
Koala::Facebook::ServerError: type: OAuthException, code: 2, message: An unexpected error has occurred. Please retry your request later. [HTTP 500]

Rohit Mishra almost 12 years ago

Thanks a lot. I wasted a couple of hours doing all sorts of things around this.

Delong_Gao over 11 years ago

Thank you so much! I was stuck at this point and could not figure out what should I do. Thx so much!!

fredguth almost 11 years ago

I am having the same error, even when I test with an Administrator account. :-(

Any idea?

Delong_Gao over 11 years ago

I don't whether this is a problem of my own, just in case:
The content of og:type meta tag should be video.movie, instead of cinematron:movie.
I don't know the reason, the latter one just doesn't work for me.

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Pierre GD almost 7 years ago

Thanks for this