How to customize moodle core files?

Question

I would like to customize view.php file which is the core file of moodle, since modifying it in core is not good practice I would like to modify it from my theme,

By default there is a cool theme , I just copy pasted the course directory into it and Try to customize it but moodle is not recognizing my directory.

What is the procedure to do this kind of customization, I check this link but unable to follow it since I don't understand. Can any one help me here about it?

Answer 1

Despite the fact that there are several view.php files, which one do you want to adapt?

Please note that you cannot simply overwrite for example course/view.php in your theme. You have to override the specific renderers, see https://docs.moodle.org/dev/Overriding_a_renderer

Answer 2

To override an url in Moodle you may use custom scripts . However if it's a matter of a renderer you should try overriding that first.