Drupal provides the property ‘#ajax’ to a form element in your form array, to trigger an Ajax response.ĬheckUserEmailValidation() is the callback function to handle the server side of the ajax event i.e., to check the user or email is already exists in the database or not.ĭrupal provides user_load_by_name() function for getting the username and user_load_by_mail() function for getting the Email. GetFormId() function is used to create a unique id to the form.īuildForm() function is used to create the form and it has a textfield to validate the username using #ajax. Each route is defined as a machine name in the form of module_name.route_nameĬreate a new file called Aja圎xampleForm.php inside of src/Form/. A yml file is a file that specifies the configuration for a file i.e., to store metadata information about the project The steps were listed below, how to validate the text field using AJAX. To achieve this, create a custom module ajax_example it requires 3 files which are ajax_, ajax_, src\Form\Aja圎xampleForm.php. Using ajax we are going to validate that field. In order to build a simple form using AJAX in Drupal 8, we created a form with Username field. RELATED INSIGHT Unlocking Revenue Potential: A Case Study in Monetizing Educational Apps
