Useful Drupal modules
Click on the module name for notes, comments, patches.
Recommendations (for and against) are my personal opinion only and may be out of date. Feel free to email with corrections/suggestions.
|Name||D8||Personally Tested||Last Updated|
|Unique field ajax (unique_field_ajax)||✔||✔||2017-02-08|
Gives you a checkbox for 'Unique' when editing fields - can have it checked during form entry (via AJAX) and specify a custom error message per field. Seems to have bug where field you're checking is sometimes refocused (even if no errors) if you've already tabbed away from it and continued typing.