Validate text area

• abyss

• July 8, 2015 at 1:55 pm

Hi! I’d like to validate my text areas so they don’t get submitted if they are empty (currently doing that by marking them as required), but I also need to validate that the user inputs at least 10 words or something like that.

How could I achieve this?
Thanks!

• John Huebner

• July 8, 2015 at 2:12 pm

You need to add a filter to validate the value of your field. The documentation is here http://www.advancedcustomfields.com/resources/acf-validate_value/.

Something like this:

add_filter('acf/validate_value/name=your_field_name', 'my_validate_function', 10, 4);
function my_validate_function($valid, $value, $field, $input) {
    $words = explode(' ', $value);
    if (count($words) < 10) {
        $valid = 'Please enter at least 10 words!';
    }
}