I saved two separate user accounts to have the same field, and it did not popup an error. I wonder if I am putting the add_filter in the wrong place. I placed it at the bottom of my plugin main php page. I also tried putting it only on the bottom of the users field php page which did not work either.

add_filter('piklist_validation_rules', 'check_if_unique', 11);
function check_if_unique($validation_rules)
{
  $validation_rules['custom_unique'] = array(
    'callback' => 'my_validate_unique'
  );
 
  return $validation_rules;
}
 
function my_validate_unique($file, $field, $arguments)
{
	$user_query = new WP_User_Query( array( 'meta_key' => 'user_custom_url', 'meta_value' => $field ) );
	if( !empty ($user_query)){
		return true;
	}else{ return __('is not unique', 'text-domain');}
 
}

Hi,

Is the “$field” an array? When I hard-code the field value into the meta_value query, i can get the correct result, but when i use “$field” to get the current field value, it never says that the field has a duplicate.

Here is the modified query that works if you remove “$field” and replace it with a value that you want to test against.

add_filter('piklist_validation_rules', 'check_if_unique', 11);
function check_if_unique($validation_rules)
{
  $validation_rules['custom_unique'] = array(
    'callback' => 'my_validate_unique'
  );
 
  return $validation_rules;
}
 
function my_validate_unique($file, $field, $arguments)
{
	global $user_id;
$the_user_id= $user_id;
  $user_query = new WP_User_Query( array( 'meta_key' => 'user_custom_url', 'meta_value' => $field, 'exclude' =>$the_user_id) );
  $users = $user_query->get_results();
$userscount = $user_query->get_total();
  if($userscount != 1 )
  {
    return true;
  }
  else
  { 
    return __('is not unique', 'your-text-domain');
  }
 
}

Hi Steve,

I am sorry, but no mater what I try I can not get it to work. I must be missing something. I can not even get it to print_r($field), or print_r(‘test’) to work inside that function. I have now tried both $field[‘value’] and $field[‘value’][0] to no luck. With either of those every time it comes up valid. When I replace the variable with a physical string, I am able to validate the field correctly.

Just for reference I have updated to the latest beta today and still have the problem: 0.9.5

add_filter('piklist_validation_rules', 'check_if_unique', 11);
function check_if_unique($validation_rules)
{
  $validation_rules['custom_unique'] = array(
    'callback' => 'my_validate_unique'
  );
 
  return $validation_rules;
}
 
function my_validate_unique($file, $field, $arguments)
{
	print_r($field); //I can not find this printing anywhere on the page
	global $user_id;
	$user_profile_id = $user_id;
	$user_query = new WP_User_Query( 
	array( 
		'meta_key' => 'user_custom_url'
		,'meta_value' => $field['value'] //Works if this is replaced with string - ie 'value'
		,'exclude' =>$user_profile_id
		) 
	);
$userscount = $user_query->get_total();
  if($userscount != 1 )
  {
  return true;
  }else{
	  return __('is not unique', 'your-text-domain');
  }
 
}

Steve,

I finally figured out why this was not working. It had to do with a plugin called php console which prevented me from seeing an error that the piklist toolbox was causing. I find that if i uninstall both php console and the toolbox, that it works, and there are no errors. Thank you so much for helping.

(just for information on this support issue,
https://piklist.com/support/topic/notice-trying-to-get-property-of-non-object/
Those notices are caused by the toolbox plugin. I somehow deactivated it, is why I thought that it was solved.)

You can close this ticket now.

Below is code that works for anyone else that is interested.

add_filter('piklist_validation_rules', 'check_if_unique', 11);
function check_if_unique($validation_rules)
{
  $validation_rules['custom_unique'] = array(
    'callback' => 'my_validate_unique'
  );
 
  return $validation_rules;
}
 
function my_validate_unique($file, $field, $arguments)
{
	global $user_id;

	$user_profile_id = $user_id;

	$user_query = new WP_User_Query( 
		array( 
			'meta_key' => 'user_custom_url'
			,'meta_value' => $field //Works if this is replaced with 'value'
			,'exclude' =>$user_profile_id
		) 
	);

$userscount = $user_query->get_total();

  if($userscount != 1 )
  {
  return true;
  }else{
	  return __('is not unique', 'your-text-domain');
  }
 
}