Drupal 7 hook menu validating argument from url
It just means the approach for doing so has changed.
Let's imagine we want to have a link somewhere on a node page or a list of nodes, which is, when clicked, changes the value of the field in this node.Lets assume you have a module (called /** * Implements hook_menu().*/ function testmodule_menu() /** * Form constructor for our fruit form.Drupal 8, however, has cast most of this initial core aside in favor of leveraging Symfony components as a foundation.While there have been numerous changes and your favorite functions or tools might have been updated or removed, this guide series should provide a breakdown of popular functions within the new release.If you are unfamiliar with object-oriented programming (OOP), you will need to get acquainted with it if you'd like to write or contribute code to the Drupal platform.
However the rewritten Drupal core consisting of Symfony components provides easy-to-use interfaces, plugins, services, classes, and objects for extending Drupal.
Additionally, we can't directly access values in the anymore.
This doesn't mean that you can't implement custom forms or related functionality with the new release.
Notifications module This is the base module of the notifications framework.
It handles event processing, queueing, message composition and sending.
Absorbing all of these new concepts at once might be intimidating to those who are used to years of the same development patterns.