I had this idea to introduce a 'post type footer' using Advanced Custom Fields so that my users could set up common, reusable messages or calls to action and have them appear after the content of a specific post type. This works great on my native post types as I can simply filter the_content but doesn't work on post types that don't employ this hook, like WooCommerce 'products' for example.
Can anyone recommend a way in which I could hook into all post types via a single hook without editing templates?
I should mention as well that I'm attempting to make this applicable to post types that might be added later by the client, which is why I can't make changes to the post type templates directly. To this end also, my admin section gets the active post types of that particular environment.