Use Ajax to Submit a Form for Drupal 8, Drupal 9

Last updated March 20, 2018
Module Development8.9.x/9.0.x

Using Ajax allows you to create forms that are submitted to the server, and processed, without requiring a page reload.

In this tutorial we'll:

  • Use #ajax with a '#type' => 'submit' button in order to submit a form via Ajax
  • Look at how form build, validation, and processing are used when submitting a form via Ajax
  • Use the form's internal storage to track data across multiple requests
  • Discuss some best practices to keep in mind when using Ajax for form submissions

By the end of this tutorial you should know how to update an existing form so that it is submitted via Ajax and no longer requires a page refresh to work.