Facebook API Question posted in
The official documentation for the Facebook APIs can be found here.

Facebook api – Is it possible to set up Facebook webhook for new page posts using Graph API?

I am trying to build an application with Ruby on Rails that gets the most recent Facebook posts from a public page and displays them in a certain way.

Currently, I am planning to get the posts using the Koala gem and Graph API’s get_connection

client = Koala::Facebook::API.new(oauth_token)
client.get_connection('someuser', 'posts',
                    {limit: @options[:max_items],
                      fields: ['message', 'id', 'from', 'type',
                                'picture', 'link', 'created_time', 'updated_time'
                        ]})

However, I believe this would require me to update the feed manually be re-running this every X hours. It would be much more convenient if it was possible to setup a webhook that listens for a new post and updates it accordingly. I found the link below, but can’t quite make sense of it/whether this possible or if there is a better way than I am currently doing it.

https://developers.facebook.com/docs/graph-api/webhooks

If it is possible, how might I achieve it, or is there another better way?

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2

Answers


  1. 0

    I believe this is the solution but never tried it, you might correct me if I’m wrong:

    1. Your webhook must subsribe for feed (or other things).
    2. Add subscribe app by POST to https://graph.facebook.com/v2.6/me/subscribed_apps?access_token=PAGE_ACCESS_TOKEN. The access token must have enough permissions for that (eg: manage_pages).

    Hope it helps!

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  2. 0

    There is two steps to achieve it, first you need suscribe your app to the webhook for pages you can do it with the Facebook app panel control or using Koala Real-time Updates (webhook references), then you need to add your app to the subscribed apps of the page. Here is the code that I use for these steps:

    #subscribe app
    @updates = Koala::Facebook::RealtimeUpdates.new(app_id:
    facebook_app_id,secret: facebook_app_secret)
    @updates.subscribe("page", "feed", callback_url, verify_token)

    #subscribe page
    api = Koala::Facebook::API.new(page["access_token"])
    api.graph_call("#{page["id"]}/subscribed_apps",{},"post",{})

    If you don’t know the page access_token see the
    Koala wiki

    Important: You need use the protocol “https” for the callback_url and the verify_token size can’t be longer than 64

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