Форма в публичной части компонента - Модификации расширений для Joomla

 $query  = "INSERT INTO #__helloworld ( greeting ) VALUES ( " . $db->Quote( $greeting ). " )"; 

public function getForm() {
	$modelform = $this->getInstance('Form', 'ZguestbookModel');
	
	return $modelform->getForm();
}

<?php
defined('_JEXEC') or die;

jimport('joomla.application.component.modelform');

class ZguestbookModelForm extends JModelForm {
	public function getTable($type='Book', $prefix='ZguestbookTable', $config=array()) {
		return JTable::getInstance($type, $prefix, $config);
	}
	
	public function getForm($data = array(), $loadData = true) {
		$form = $this->loadForm($this->option . '.book', 'book', array('control' => 'jform', 'load_data' => $loadData));
		
		if (empty($form)) {
			return false;
		}
		
		return $form;
	}
}

<?php
defined('_JEXEC') or die;

jimport('joomla.database.table');

class ZguestbookTableBook extends JTable {
	public function __construct(&$db) {
		parent::__construct('#__zguestbook', 'id', $db);
	}
}
?>

<form action="<?php echo JRoute::_('index.php?option=com_zguestbook&layout=edit&id=' . (int) $this->item->id); ?>" method="post" name="adminForm" id="post-form" class="form-validate">
    <fieldset>
        <legend><?php echo JText::_('COM_ZGUESTBOOK_TEXT_DETAILS'); ?></legend>
        <table>
            <?php foreach ($this->form->getFieldset() as $field) : ?>
                <tr>
					<?php if ($field->type == 'Editor') : ?>
						<td colspan="2">
							<br />
							<?php echo $field->label; ?>
							<?php echo $field->input; ?>
						</td>
					<?php else : ?>
						<td>
							<?php echo $field->label; ?>
						</td>
						<td>
							<?php echo $field->input; ?>
						</td>
					<?php Endif; ?>
				</tr>
            <?php endforeach; ?>
			<tr>
				<td></td>
				<td>
					<input type="submit" value="<?php echo JText::_('COM_ZGUESTBOOK_FORM_BUTTON_SUBMIT'); ?>" />
					<input type="reset" value="<?php echo JText::_('COM_ZGUESTBOOK_FORM_BUTTON_RESET'); ?>" />
				</td>
			</tr>
        </table>
    </fieldset>
    <div>
        <input type="hidden" name="task" value="" />
        <?php echo JHtml::_('form.token'); ?>
    </div>
</form>

<input type="hidden" name="task" value="zguestbook.save" />

jimport('joomla.application.component.controllerform');

ZguestbookControllerForm extends JControllerForm
{

}