How to Validate Field Submissions in Drupal

How to Validate Field Submissions in Drupal

As OSTraining member asked us how to validate fields in Drupal 8.

In this particular example, they wanted to make sure that every entry in a text field was unique. 

For this tutorial, you will need to download, install and enable the following modules.


Source: https://www.ostraining.com/blog/drupal/rss.feed

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