Как спрятать поле Цена, если оно не заполнено - Mosets Tree

class mFieldType_coreprice extends mFieldType_number {
	var $name = 'price';
	function getOutput() {
		$price = $this->getValue();
		$displayFree = $this->getParam('displayFree',1);
		if($price == 0 && $displayFree == 1) {
			global $_MT_LANG;
			return $_MT_LANG->FREE;
		} else {
			return $price;
		}
	}
}

// Other custom fields
echo '<div class="fields">';
$this->fields->resetPointer();
while( $this->fields->hasNext() ) {
	$field = $this->fields->getField();
	$value = $field->getValue();
	if( 
		( 
			(!$field->hasInputField() && !$field->isCore() && empty($value)) || (!empty($value) || $value == '0') ) 
			&& 
			// This condition ensure that fields listed in array() are skipped
			!in_array($field->getName(),array('link_name','link_desc')
		) 
		||
		// Fields in array() are always displayed regardless of its value.
		in_array($field->getName(),array('link_featured'))
	) {
		echo '<div class="row">';
		if($this->config->getTemParam('displayAddressInOneRow','1') && in_array($field->getId(),array(4,5,6,7,8)) && $address_field = $this->fields->getFieldById(4)) {
			if( $address_displayed == false ) {
				echo '<div class="caption">';
				if($address_field->hasCaption()) {
					echo $address_field->getCaption();
				}
				echo '</div>';
				echo '<div class="data">';
				echo $address_field->getDisplayPrefixText(); 
				echo $address;
				echo $address_field->getDisplaySuffixText(); 
				echo '</div>';
				$address_displayed = true;
			}
		} else {
			echo '<div class="caption">';
			if($field->hasCaption()) {
				echo $field->getCaption();
			}
			echo '</div>';
			echo '<div class="data">';
			echo $field->getDisplayPrefixText(); 
			echo $field->getOutput(1);
			echo $field->getDisplaySuffixText(); 
			echo '</div>';
		}
		echo '</div>';
	}
	$this->fields->next();
}
echo '</div>';