Pre-Populating Drupal Form Fields Using ECA and Query Strings

Michael Anello, writing for DrupalEasy, discusses a practical use of the ECA module for pre-populating form fields on a Drupal site using query string variables. The method involves passing the desired value through a URL, such as 'https://mysite.ddev.site/node/add/article?myvalue=1,' to automatically set the value of an entity reference field on the node add page. 

Michael outlines a straightforward approach to configuring this functionality using components from the ECA module suite, particularly the Build Form event and Form Field: Set Default Value task. While other methods like custom modules or alternative contrib modules like Pre-populate and Entity prepopulate could achieve similar results, Michael recommends the ECA-based solution for projects already using ECA to streamline module dependencies.