Robot teaching a room full of programmers

I know AI is talked about so much it has become a cliche, but ChatGPT can be really reduce the effort needed to take care of tedious tasks, and can help you figure out tricky problems. 

Try asking ChapGPT this, for example: 

"Explain the format of the libraries file in a Drupal 10 module" 

A subscription to ChatGPT 4 also gets you access to the amazing DALL-E image generator. I used DALL-E (the name is a mashup between "WALL-E" and surrealist painter Salvador Dali) to create the image below, as well as all the other images in this series that aren't screen grabs. 

The prompt that created this picture was: "Create a picture of a robot teaching a class full of web developers about sql" Isn't that amazing?

Here's the output of "Explain the format of the libraries file in a Drupal 10 module:

In Drupal, the libraries file (typically named MODULENAME.libraries.yml) is used to define one or more libraries that a module (or theme) provides. Each library can contain CSS stylesheets, JavaScript files, or other assets that the module or theme should include. This system allows Drupal to manage and optimize the loading of assets efficiently.

The libraries.yml file is a YAML file, which is a human-readable data serialization standard. In this file, you define each library with its unique name and specify the CSS, JS, dependencies, and other properties for the library.

Here's the general format of a libraries.yml file

                                                                  version: VERSION
                                                                      css/style.css: {}
                                                                      css/another-style.css: { media: all }
                                                                    js/script.js: {}
                                                                    - core/jquery
                                                                    - core/drupal
                                                                  header: true/false


  • library-name: This is a unique identifier for the library within the module. You can define multiple libraries by adding more entries.

  • version: (Optional) Specifies the version of the library.

  • css: Defines CSS files to include. You can categorize them into different types like 'base', 'layout', 'component', 'state', or 'theme'. Each type can have different weights and priorities when the CSS is added to the page.

    • css/style.css: The path to the CSS file relative to the root of the module or theme.
    • {}: CSS options (like 'media' for media queries, 'preprocess' to enable or disable preprocessing, etc.).
  • js: Defines JavaScript files to include.

    • js/script.js: The path to the JS file relative to the root of the module or theme.
    • {}: JS options (like 'type' for the script type, 'minified' to indicate if the script is already minified, etc.).
  • dependencies: Lists the libraries that must be loaded before this library. It ensures that your library has all the necessary scripts or styles it depends on. Each dependency is specified in the format provider/library.

  • header: (Optional) A boolean (true/false) value indicating whether the JavaScript should be placed in the header. If omitted or set to false, JavaScript is placed at the bottom of the page by default (which is usually preferred for performance reasons).

Here's an example of how a module might define a library in its MODULENAME.libraries.yml file:

                                                                  version: 1.x
                                                                      css/my-styles.css: { media: all }
                                                                    js/my-scripts.js: {}
                                                                    - core/jquery
                                                                    - core/drupal

In this example, my_library includes one CSS file, one JavaScript file, and has dependencies on jQuery and Drupal's core JavaScript.

When you want to attach this library to a render array in Drupal, you can use the following syntax:

$build['#attached']['library'][] = 'MODULENAME/my_library';

This system provides a structured way to manage assets in Drupal, ensuring that they are loaded in the correct order and only when needed.