Post on Facebook Page using Facebook Graph API

Actually, Facebook offers a great API that is flexible and simple. However, I feel that is hard to get started if lacking the passion to read their document.

* I'm using hello.com as my host server for example here.

Preparation

• Read Facebook Official Document - Access Token
• Create a Facebook App on Developer Facebook
• find out App ID and App Secret, you will need them later
• put http://hello.com in Settings->Website->Site URL and Mobile Site URL
• since we will need "manage_pages" permission, select it from the list and submit for approve by Facebook (it takes around a week)
• Create a simple file that prints GET parameters on your server code. Ex, put <?php print_r($_GET);?> as index.php in hello.com

Variables

• App ID
• App Secret
• URL (hello.com)
• code
• access_token
• Facebook Page ID
• message (the content you want to post on the page)

Facebook Graph APIs

• https://www.facebook.com/dialog/oauth?client_id=<App ID>&redirect_uri=http://hello.com/&scope=manage_pages,publish_stream
• you will get "code" from GET parameters in hello.com/index.php
• https://graph.facebook.com/oauth/access_token?client_id=<App ID>&redirect_uri=http://hello.com/&client_secret=<App Secret>&code=<code>
• you will get "access_token" and its expire time
• https://graph.facebook.com/me/accounts?access_token=<access_token>
• this checks the user's account information (his/her Facebook pages)
• https://graph.facebook.com/<Facebook Page ID>/feed?access_token=<access_token>&message=<message>
• the message is posted on the page

Reference

• /{page-id}/feed API