When defining a new FormElement plugin, or if your constraints are only relevant for a single element, you can use the #element_validate property of an individual element to specify additional validation callbacks.
In this tutorial we'll:
- Add an
#element_validatecallback to a single element in a form to perform validation of just that element.
By the end of this tutorial you should know how to add #element_validate callbacks to any form element in Drupal.
Over the years we've developed some techniques for practicing that we wanted to share. At Drupalize.Me we take hugging seriously. In this tutorial we'll look at the art, and science, of giving a good hug. The Merriam Webster dictionary defines the word hug as; squeeze (someone) tightly in one's arms, typically to express affection.
Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:
- Defining what a hug is
- Some of the many types of hugs in the world today
- Precautions you may want to familiarize yourself with before hugging
- And the importance of proper technique
Lets go ahead and get started shall we?