While there are some WP–specific solutions that track template files, for complicated projects pretty much the only reliable list is using get_included_files() PHP function at the end of page load. It would give you everything, including WP core, but filtering it down to theme is relatively easy.
Copy the file to your child theme, In your child theme, create a template and name it what ever you want, e.g content-child.php Now you can replace lib/login/register.php with your new template: <?php get_template_part( ‘content-child’, get_post_format() ); ?> It should work.
Usually the format you see in themes are content-{$post_format-term}.php or content-{$pagename}.php, but it is not restricted to this formats. The naming convention can also differ to your liking as long as you keep it out of normal template hierarchy and then use get_template_part to call it correctly. These are not self standing templates, they cannot … Read more
Using require_once for parent-directory not working but is working in sub-directories
It’s sounds like js errors. Check from chrome console for possible errors. Also why are you loading the contact-us template using get_template_part function?
This is a bit of a guess, but you are running a secondary query inside the Loop (by way of the shortcode). That is going to alter some variables that subsequent code may depend upon, such as $post. I am thinking that you need to add wp_reset_query(); after your secondary Loop in the shortcode– right … Read more
Create child theme of the main theme you’re using. That way you can override just the parts you want. Reference – https://codex.wordpress.org/Child_Themes Hope it helps!
Not sure it is the best idea to try to run a plugin “in” your theme like this – it won’t get updated as the plugin is updated. You say you have “included all the files” from the plugin, but now you are trying to call admin-config.php with get_template_part when it is not a template … Read more
You did not include wp_reset_postdata(); after the while loop.
Mapping of URL directly to a template file you describe (mapping URL to a file) is quite rare technique in WordPress, sometimes called static pages. It is rare because in general that’s not how WordPress works. It works by mapping URL to query variables to WP_Query to template hierarchy to template file. Going from URL … Read more