request: rules based on parent

//---------------------------------------------------------------------------------
// mm_conditional
// Set Value based on a parent value values from a parent
//---------------------------------------------------------------------------------
function mm_conditional($fields, $value, $parentvalue, $conditional='IS', $roles='', $templates='') {

	global $mm_fields, $modx;
  
	$e = &$modx->Event;
	
	// if we've been supplied with a string, convert it into an array 
	$fields = makeArray($fields);
	
  $output = " // ----------- Conditional -------------- \n";
  
	// if we aren't creating a new document or folder, we don't want to do this
	//if (!($modx->manager->action == "85" || $modx->manager->action == "4")) {
	//	return;
	//} 
	
	// Are we using this rule?
	if (useThisRule($roles, $templates)) {
	
		//$output = " // ----------- Inherit -------------- \n";
	
		// Get the parent info
		if (isset($_REQUEST['id'])){
			$parentID = $modx->getPageInfo($_REQUEST['id'],0,'parent');
			$parentID = $parentID['parent'];
		} else {
			$parentID = 0;
		}
		
		foreach ($fields as $field) { 
			switch ($field) {
						
				default:
				
					// get some info about the field we are being asked to use
					if (isset($mm_fields[$field])) {
						$fieldtype = $mm_fields[$field]['fieldtype'];
						$fieldname = $mm_fields[$field]['fieldname'];
					} else {
						break;
					}
				
					// Get this field data from the parent
					$newArray = $modx->getDocument($parentID, $field);
					$newvalue = $newArray[$field];
          
          $output .= "\n// --- $fieldtype ---\n";
                    
          if ($conditional == 'IS')
          {
            $output .=  "\n// --- IS: $newvalue == $parentvalue ---\n";
            if ($newvalue == $parentvalue)
            {
                $output .=  '$("'.$fieldtype.'[@name='.$fieldname.']").val("' . jsSafe($value) . '");';
            }
            else
            {
              $output = '';
            }
          }
          elseif($conditional == 'ISNOT')
          {
            if ($newvalue != $parentvalue)
            {
                $output .=  '$("'.$fieldtype.'[@name='.$fieldname.']").val("' . jsSafe($value) . '"); ';
            }
            else
            {
              $output = '';
            }
          }
          else
          {
            $output = '';
          }
					
				break;	
			}	
			$e->output($output . "\n");
		}		
	}
}

mm_conditional('template',9,10); // if the parent template is 10, it will change this template to 9. Unfortunately it will not get any of the managermanager attributes for the new template.

mm_conditional('pagetitle','This is a sub news document','News');  // if the pagetitle is news, set this pagetitle to 'This is a ...'