Theme development

Slightly change the theme in Drupal 7.
To do this, you need to completely copy the entire Theme? Or is it enough to copy the modified files?

This should be a separate theme

Thanks

I have just moved from D7 to D8/9.

I was using the following in my template.php for a pager styling.

This does not seem to work. It am getting an error.

/**
 * Pager styling
 */
function themename_preprocess_pager(&$variables, $hook) {
  if ($variables['quantity'] > 5) $variables['quantity'] = 5;
  $variables['tags'][0] = 'First';
  $variables['tags'][1] = 'Previous';
  $variables['tags'][3] = 'Next';
  $variables['tags'][4] = 'Last';
}

Error message is:

Recently, I was discussing some theming challenges and the suggestion was made that I should use HOOK_form_alter over custom twig templates. But an explanation wasn't really provided. 

It got me thinking, my theme I'm building is starting to amass a large number of twig templates for pages and fields. Probably about 30 - 40 right now. This is because some form elements require editing 2 - 3 templates to tap into all areas of the field. i.e. page template > form element container template > form element template > input template.

Hi, I saw a few nice themes, which i want to use. But unfortunately the side bar is on the right. I want to move it to the left. Has anyone a clue for me?

Thanks,

Fred

Maybe a silly question. Is there a way to change the default poweredby block. And if can i also add a php code in it to get te current year? Such as this: "Copyright 1995 - <?php echo date('Y');?> "

Thanks

I'm trying to make a theme suggestion for a form element. I would like to use the field ID and the node ID. So, for a form element with field ID 'first name' on node 23, the suggestion would be: form-element--first-name--23.html.twig

I cobbled together the function below with some elements from this article, but it doesn't work. Drupal 8 / 9 – Adding theme suggestions for node id specific field template.