<?php
// No direct access
defined('_JEXEC') or die('Restricted access');
JHtml::_('behavior.tooltip');
JHtml::_('behavior.formvalidation');
?>
<form action="<?php echo JRoute::_('index.php?option=com_helloworld&layout=edit&id='.(int) $this->item->id); ?>"
      method="post" name="adminForm" id="helloworld-form" class="form-validate">
        <fieldset class="adminform">
                <legend><?php echo JText::_( 'COM_HELLOWORLD_HELLOWORLD_DETAILS' ); ?></legend>
                <?php foreach($this->form->getFieldset() as $field): ?>
                        <?php if (!$field->hidden): ?>
                                <?php echo $field->label; ?>
                        <?php endif; ?>
                        <?php echo $field->input; ?>
                <?php endforeach; ?>
        </fieldset>
        <div>
                <input type="hidden" name="task" value="helloworld.edit" />
                <?php echo JHtml::_('form.token'); ?>
        </div>
</form>

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla view library
jimport('joomla.application.component.view');
 
/**
 * HelloWorld View
 */
class HelloWorldViewHelloWorld extends JView
{
        /**
         * display method of Hello view
         * @return void
         */
        public function display($tpl = null) 
        {
                // get the Data
                $form = $this->get('Form');
                $item = $this->get('Item');
                $script = $this->get('Script');
 
                // Check for errors.
                if (count($errors = $this->get('Errors'))) 
                {
                        JError::raiseError(500, implode('<br />', $errors));
                        return false;
                }
                // Assign the Data
                $this->form = $form;
                $this->item = $item;
                $this->script = $script;
 
                // Set the toolbar
                $this->addToolBar();
 
                // Display the template
                parent::display($tpl);
 
                // Set the document
                $this->setDocument();
        }
 
        /**
         * Setting the toolbar
         */
        protected function addToolBar() 
        {
                $input = JFactory::getApplication()->input;
                $input->set('hidemainmenu', true);
                $isNew = ($this->item->id == 0);
                JToolBarHelper::title($isNew ? JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_NEW')
                                             : JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_EDIT'), 'helloworld');
                JToolBarHelper::save('helloworld.save');
                JToolBarHelper::cancel('helloworld.cancel', $isNew ? 'JTOOLBAR_CANCEL' : 'JTOOLBAR_CLOSE');
        }
        /**
         * Method to set up the document properties
         *
         * @return void
         */
        protected function setDocument() 
        {
                $isNew = ($this->item->id < 1);
                $document = JFactory::getDocument();
                $document->setTitle($isNew ? JText::_('COM_HELLOWORLD_HELLOWORLD_CREATING')
                                           : JText::_('COM_HELLOWORLD_HELLOWORLD_EDITING'));
                $document->addScript(JURI::root() . $this->script);
                $document->addScript(JURI::root() . "/administrator/components/com_helloworld"
                                                  . "/views/helloworld/submitbutton.js");
                JText::script('COM_HELLOWORLD_HELLOWORLD_ERROR_UNACCEPTABLE');
        }
}

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla modelform library
jimport('joomla.application.component.modeladmin');
 
/**
 * HelloWorld Model
 */
class HelloWorldModelHelloWorld extends JModelAdmin
{
        /**
         * Returns a reference to the a Table object, always creating it.
         *
         * @param       type    The table type to instantiate
         * @param       string  A prefix for the table class name. Optional.
         * @param       array   Configuration array for model. Optional.
         * @return      JTable  A database object
         * @since       2.5
         */
        public function getTable($type = 'HelloWorld', $prefix = 'HelloWorldTable', $config = array()) 
        {
                return JTable::getInstance($type, $prefix, $config);
        }
        /**
         * Method to get the record form.
         *
         * @param       array   $data           Data for the form.
         * @param       boolean $loadData       True if the form is to load its own data (default case), false if not.
         * @return      mixed   A JForm object on success, false on failure
         * @since       2.5
         */
        public function getForm($data = array(), $loadData = true) 
        {
                // Get the form.
                $form = $this->loadForm('com_helloworld.helloworld', 'helloworld',
                                        array('control' => 'jform', 'load_data' => $loadData));
                if (empty($form)) 
                {
                        return false;
                }
                return $form;
        }
        /**
         * Method to get the script that have to be included on the form
         *
         * @return string       Script files
         */
        public function getScript() 
        {
                return 'administrator/components/com_helloworld/models/forms/helloworld.js';
        }
        /**
         * Method to get the data that should be injected in the form.
         *
         * @return      mixed   The data for the form.
         * @since       2.5
         */
        protected function loadFormData() 
        {
                // Check the session for previously entered form data.
                $data = JFactory::getApplication()->getUserState('com_helloworld.edit.helloworld.data', array());
                if (empty($data)) 
                {
                        $data = $this->getItem();
                }
                return $data;
        }
}

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla formrule library
jimport('joomla.form.formrule');
 
/**
 * Form Rule class for the Joomla Framework.
 */
class JFormRuleGreeting extends JFormRule
{
        /**
         * The regular expression.
         *
         * @access      protected
         * @var         string
         * @since       2.5
         */
        protected $regex = '^[^0-9]+$';
}