I have tested some time this field but when try to get submitted values the result is not as expected.

//<?php
$type = new \IPS\Helpers\Form\Select( 'where[0][]', NULL, FALSE, array(
	'options' => array(
		'include' => 'include',
		'exclude' => 'exclude'
	)
) );

$location = new \IPS\Helpers\Form\Stack( 'where[1][]', array(), FALSE, array(), function($val){
	if ( $val )
	{
		foreach ( array_filter( is_array( $val ) ? $val : array( $val ) ) as $s )
		{
			try
			{
				$s = (mb_substr( $s, 0, mb_strlen( \IPS\Http\Url::baseUrl() ) ) === \IPS\Http\Url::baseUrl() OR filter_var( $s, FILTER_VALIDATE_URL ) !== FALSE) ? $s : \IPS\Http\Url::baseUrl() . $s;
				$url = \IPS\Http\Url::createFromString( str_replace('*','',$s), TRUE, TRUE );
				if ( !( $url instanceof \IPS\Http\Url\Internal) )
				{
					throw new \InvalidArgumentException( $s );
				}
			}
			catch ( \InvalidArgumentException $e )
			{
				throw new \DomainException( \IPS\Member::loggedIn()->language()->addToStack( 'ba_cta_popup_stack_err', FALSE, array( 'sprintf' => array( $e->getMessage() ) ) ) );
			}
		}
	}
});

$form->add( new \IPS\Helpers\Form\Custom( 'where', array(), FALSE, array(
	'getHtml'	=> function( $element ) use ($type,$location)
	{
		return $type->html() . $location->html();
	}
), NULL, NULL, NULL, 'where' ) );

if ( $values = $form->values() )
{
	echo "VAR_DUMP \$_REQUEST['where']";
	var_dump($_REQUEST['where']);
	echo "\n\n\nVAR DUMP \$values['where']";
	var_dump($values['where']);
	exit;
}

return $form;

 

consider old bug reports:

@Matt  @Andy Millne @Ali Majrashi

I'm fairly certain the stack javascript is designed to swap out the input element's name array keys, however it is not designed to work with sub (or sub-sub, etc.) arrays.

In short, I'd stop trying to use a name like "where[1][]" and just use a unique form field name like "where_stack" or whatever. If that doesn't work please run the same test and let me know what you are seeing.

i don't remember but if i include input with different name (like where_first and where_two..) from Form\Custom name (where) the values submitted don't are present other different from "where" name.

see code below.

//<?php
$type = new \IPS\Helpers\Form\Select( 'where_one', NULL, FALSE, array(
	'options' => array(
		'include' => 'include',
		'exclude' => 'exclude'
	)
) );

$location = new \IPS\Helpers\Form\Stack( 'where_two', array(), FALSE, array(), function($val){
	if ( $val )
	{
		foreach ( array_filter( is_array( $val ) ? $val : array( $val ) ) as $s )
		{
			try
			{
				$s = (mb_substr( $s, 0, mb_strlen( \IPS\Http\Url::baseUrl() ) ) === \IPS\Http\Url::baseUrl() OR filter_var( $s, FILTER_VALIDATE_URL ) !== FALSE) ? $s : \IPS\Http\Url::baseUrl() . $s;
				$url = \IPS\Http\Url::createFromString( str_replace('*','',$s), TRUE, TRUE );
				if ( !( $url instanceof \IPS\Http\Url\Internal) )
				{
					throw new \InvalidArgumentException( $s );
				}
			}
			catch ( \InvalidArgumentException $e )
			{
				throw new \DomainException( \IPS\Member::loggedIn()->language()->addToStack( 'ba_cta_popup_stack_err', FALSE, array( 'sprintf' => array( $e->getMessage() ) ) ) );
			}
		}
	}
});

$form->add( new \IPS\Helpers\Form\Custom( 'where', array(), FALSE, array(
	'getHtml'	=> function( $element ) use ($type,$location)
	{
		return $type->html() . $location->html();
	}
), NULL, NULL, NULL, 'where' ) );

if ( $values = $form->values() )
{
	echo "VAR_DUMP \$_REQUEST";
	var_dump($_REQUEST);
	echo "\n\n\nVAR DUMP \$values";
	var_dump($values);
	exit;
}

return $form;

Try this instead:

$form->add( new \IPS\Helpers\Form\Custom( 'where', array(), FALSE, array(
	'getHtml'	=> function( $element ) use ($type,$location)
	{
		return $type->html() . $location->html();
	},
	'formatValue' => function( $element ) use( $type, $location )
	{
		return array( 'where_one' => $type::stringValue( $type->value ), 'where_two' => $location::stringValue( $location->value ) );
	}
), NULL, NULL, NULL, 'where' ) );