Vì cơm cháo gạo tiền

One way is to create a "Settings" webfrom handler instead of an "Action" handler.

This configuration file is used to add links on a page that allows the user to complete an action.

I am writing this post to help drupal 8 developers for creating a custom Ajax Command to insert value in CKEditor in a node edit form, Like Body field of a node. Here are the steps:

By using this code in my site the class is set the first time, but after a ajax call it's not, what is wrong?

You should maybe preprocess you the URL in place. Via template_preprocess_field get the node ID, build the path alias, send it to Twig.

Retrieving the image URL from an image field in Drupal 8 and 9 seemed pretty straightforward too.

The examples here contain some hard-coded IDs. These are all examples. In your real code, you should already have the node IDs, file IDs, etc. in a variable.

The route which we wanted to restrict was block_content.add_form from core block_content module.

Controllers in Drupal 8 are the equivalent of hook_menu in Drupal 7. A controller lets you define a URL and what content or data should appear at that URL

GraphQL has been on the market for more than five years, yet there is still some confusion about its use