Change the code to avoid using functions, methods, constants, and services that have been deprecated in Drupal 9 and removed from Drupal 10

I have also face this same issue after cloned Coffee Zymphonies Theme like undefined function drupal_get_path().

Error: Call to undefined function drupal_get_path() in coffee_zymphonies_theme_get_slider_content() (line 176 of themes/contrib/coffee_zymphonies_theme/coffee_zymphonies_theme.theme).

Please open the coffee_zymphonies_theme.theme file in the path of (themes/contrib/coffee_zymphonies_theme/city_zymphonies_theme.theme ).
so please add the drupal_get_path() after end of this coffee_zymphonies_theme_get_slider_content function.

function drupal_get_path($type, $name) {
/**
drupal_get_path('module', 'node') \Drupal::service('extension.list.module')->getPath('node')
drupal_get_path('theme', 'seven') \Drupal::service('extension.list.theme')->getPath('seven')
drupal_get_path('profile', 'standard') \Drupal::service('extension.list.profile')->getPath('standard')
*/
switch ($type) {
case 'module':
return \Drupal::service('extension.list.module')->getPath($name);
break;
case 'theme':
return \Drupal::service('extension.list.theme')->getPath($name);
break;
case 'profile':
return \Drupal::service('extension.list.profile')->getPath($name);
break;
return false;
}
}

Its working fine for me,

Since the theme uses core_version_requirement: ^8 || ^9 || ^10, simply replacing the function call with a call to a service method is not sufficient to resolve the bug, as Drupal 8.9 does not implement that service.

Rushikesh Raval → made their first commit to this issue’s fork.

In that case, the issue summary must be updated to describe all the necessary changes, and in which Drupal version the function, method, costant, or service has been deprecated.

The following files also have a dependency on classy theme, which is removed from Drupal10 core.

Most call {{ attach_library('classy/file') }}, but I haven't checked them all:

web/themes/contrib/coffee_zymphonies_theme/templates/field/file-link.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/content/node.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/content/search-result.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/content/comment.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/dataset/forums.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/navigation/book-navigation.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/content-edit/image-widget.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/content-edit/file-managed-file.html.twig
web/themes/contrib/coffee_zymphonies_theme/templates/misc/status-messages.html.twig

That will need a different issue.