Create a Cancel button for Joomla 3.2 custom component - joomla-extensions

Question

I am trying to build a Joomla 3.2 custom component and am having a difficult time getting the cancel button (admin section) to work. I've added the button, but when I click it I get the error:
0 Invalid controller: name='helloworld', format=''
This is for the component 'helloworld' and the view 'goodbye'. Could someone look at my files and tell me how to get the 'cancel' button to work? I just want it to close the current page and return to the default component page.
Thanks for any help.
/administrator/views/goodbye/view.html.php
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
// import Joomla view library
jimport('joomla.application.component.view');
/**
* HTML View class for the HelloWorld Component
*/
class HelloWorldViewGoodbye extends JViewLegacy
{
// Overwriting JView display method
function display($tpl = null)
{
$this->addToolbar();
// Display the view
parent::display($tpl);
}
protected function addToolbar()
{
JToolbarHelper::title('Race Results','tbar');
JToolbarHelper::cancel('helloworld.cancel', 'JTOOLBAR_CLOSE');
}
}
/administrator/views/goodbye/tmpl/default.php
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
?>
<h1>Cancel Race Results</h1>
<script type="text/javascript">
Joomla.submitbutton = function(task)
{
if (task == 'helloworld.cancel')
{
Joomla.submitform(task, document.getElementById('helloworld-form'));
}
}
</script>
<form id="helloworld-form" name="adminForm" method="post" action="<?php echo JRoute::_('index.php?option=com_helloworld&view=goodbye'); ?>">
<input type="hidden" name="option" value="com_helloworld" />
<input type="hidden" name="task" value="" />
<input type="hidden" name="view" value="goodbye" />
<?php echo JHtml::_('form.token'); ?>
</form>
/administrator/controllers/goodbye.php
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
// import Joomla modelitem library
jimport('joomla.application.component.controller');
/**
* HelloWorld Model
*/
class HelloWorldControllerGoodbye extends JControllerLegacy
{
public function edit() {
}
public function add() {
}
public function remove() {
}
public function save() {
}
public function apply() {
}
}
/administrator/models/goodbye.php
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
// import Joomla modelitem library
jimport('joomla.application.component.model');
/**
* HelloWorld Model
*/
class HelloWorldModelGoodbye extends JModelLegacy
{
}

Answer 1

depending on action you would like to achieve
Add to controller
public function cancel($key = null) {
JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));
$this->setRedirect(JRoute::_('index.php?option='.$this->option.'&view=name_of the_view' , false));
return true;
}
In view.html add condition to your button
if (condition when to use button)
{
JToolbarHelper::cancel('your_controller_name.cancel');
}
else
{
JToolbarHelper::cancel('your_controller_name', 'JTOOLBAR_CLOSE');
}

Answer 2

Change HelloWorldViewGoodbye to GoodbyeViewGoodbye and same other.