#18 ­- Events and Subscriber

[amansrivastava]

Objective

In this session, we will take a look into the Events and Subscribers which is a mechanism very similar to the Drupal’s hook system which allows one component of code to be triggered when something else is triggered.

Exercise

• Modify the page_example module such that whenever the “examples/page_example/simple” page is loaded, an event “simple_page_load” is dispatched.
• In your custom module, subscribe to the earlier event. Implement some custom code in your subscriber (Say make an entry to database logging under “Simple Page” type with the message “Simple Page Loaded”).