How do I use Drupal hooks?
To define a hook:
- Choose a unique name for your hook. It should start with “hook_”, followed by your module’s short name.
- Provide documentation in a *. api. php file in your module’s main directory.
- Invoke the hook in your module’s code.
How do I invoke a hook in a particular module in Drupal?
To invoke a new hook, all you need to do is call module_invoke_all() and pass in the name of the hook. We will call the hook beer_round. So you will call module_invoke_all(‘beer_round’) and add the result to the array of people in the round. Drupal will check every module to see if hook_beer_round has been implemented.
What are hooks in Drupal 7?
A hook is a way to place a piece of your own custom code to be run by Drupal. Using hooks, you can ask Drupal to run a piece of code when a node is viewed/edited/deleted. hooks are conceptually related to method. They represent standard ways of interacting with data structures.
What are Drupal hooks?
Hooks are how modules can interact with the core code of Drupal. They make it possible for a module to define new urls and pages within the site (hook_menu), to add content to pages (hook_block, hook_footer, etc.), to set up custom database tables (hook_schema) and more.
Which hook is used to alter the Drupal menu?
The Drupal 6. x menu system introduces two new _alter hooks for changing the items being saved to the {menu_router} or {menu_links} tables.
What is contextual filter Drupal 8?
Contextual filters in Drupal allow you to add or remove information (content) to the currently displayed view. The filter acts dynamically based on the URL. If the provided argument value is in the URL, the view will contain certain results, if the value is not in the URL, the view will be filtered with other results.
What is a Drupal hook?
Hooks allow modules to alter and extend the behavior of Drupal core, or another module. They are one of the various ways that code components in Drupal can communicate with one another. Using hooks a module developer can change how core or another module works — without changing the existing code.
What is Drupal context?
Drupal’s Context module allows you to manage conditions and contextual reactions in the various parts of your site. This means that you can assign a different context for each “section” of your site and control the conditions that trigger each context, as well as associated reactions.