Action Links are a good way to add an extra call to action (CTA) beside the Link and Share links on Facebook Posts. The actions parameter lets you add a custom link and name to any post on Facebook, whether is a CTA to download a file, or voting in a poll / competition.
Action Links in PHP
The below code demonstrates a simple API call that adds a message with a custom “Search” action to the post. The name and link attributes inside of the actions parameter can be changed to say anything. And you can even add the other feed parameters like name, link, caption, picture and description to customise the post further.
https://gist.github.com/niraj-shah/9781705
The above code results in a post like:
Action Links in JavaScript
The below JavaScript example is a bit more elaborate, adding a link and related parameters to create a better post. The name, link, caption, and picture attributes are used to add a link to the post.
https://gist.github.com/niraj-shah/9781909
The above code results in a share dialog like:
Demo
You can find a working example of the JavaScript code here. Click on the “Edit in JS Bin” button in the top-right corner to play around with the code too.