How to modify how the_content outputs a link to an internal page

Question

I like the default add link dialog in the wordpress editor. IT allows for easy linking to internal pages. I need to modify the output of those internal links.

Right now its outputting:

<a href="page url" title="linked page title">my text</a>

I need it to be:

<a href="page url" title="linked page title" data-id="linked page id">my text</a>

I need the linked page id to be set in a data attr. Is this possible with a action/hook

Thank you

Answer 1

I'm in a hurry so don't have time to provide any code, pseudo or otherwise, but you could probably do this in the the_content filter by using a regex to find all links and for each one find the page/post ID using url_to_postid and then replacing as appropriate.

Good luck!