Validate on using value from other field

• berendbotje

• November 13, 2014 at 12:21 am

I’m making something were people can give an start date and ending to an event. The ending date isn’t required but if it has been entered I want to check it with the starting date, as an ending can’t be before an starting date.

I tried some stuff with acf/validate_value/name=event_end_datetime but I can’t seem to get the correct value from the starting date field (i tried with acf/load_value/name=event_start_datetime but it gives me the value of the field event_start_datetime.

Here is what I have so far:

add_filter('acf/validate_value/name=event_end_datetime', 'acf_validate_event_date', 10, 4);
function acf_validate_event_date($valid, $value, $field, $input){
      //bail early if value is already invalid
      if(!$valid) {
            return $valid;
      }
      
      //Get value from event_start_datetime
      $event_start_datetime = apply_filters('acf/load_value/name=event_start_datetime', $value);

      //Get value from event_end_datetime
      $event_end_datetime = apply_filters('acf/load_value/name=event_end_datetime', $value);

      //Let's do the check.
      if(strtotime($event_end_datetime) <= strtotime($event_start_datetime) ) {
            $valid = '!Eind datum is ' . $event_end_datetime . ' begin datum is ' . $event_start_datetime;
      }

      //return
      $valid = 'Eind datum is ' . $event_end_datetime . ' begin datum is ' . $event_start_datetime;
      return $valid;

}

• berendbotje

• December 3, 2014 at 4:09 am

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