Add Custom Validation to Content Type Fields in Drupal 10 | Drupal Tutorials

[@mysticRoutesIndia]

Nice explanation... Thanks

[@lazzyvn]

don't use Hook form_alter, it's not performance because all forms pass this hook. Using hook_form_BASE_FORM_ID_alter is better

[@drupal-academy]

At some extent it affects the performance. So the better way to implement validations is, use constraints to add custom validations to content type field. Video link ua-cam.com/video/QvI19RKFS-4/v-deo.html