Информация по написанию компонента - страница 8 - Joomla 1.5: Общие вопросы

function remove()
	{
		$arrayIDs = JRequest::getVar('cid', null, 'default', 'array' );
		if($arrayIDs === null)
			{ 
				JError::raiseError(500, 'cid missing');
			}
		$model = &$this->getModel('Technics3');
		$model->deleteTechnics($arrayIDs);
		$redirectTo = JRoute::_('index.php?option='.JRequest::getVar('option'));
		$this->setRedirect($redirectTo, 'Deleted..');
	}

	function deleteTechnics($arrayIDs)
	{
		$query = "DELETE FROM #__usertech WHERE id IN (".implode(',', $arrayIDs).")";
		$db = $this->getDBO();
		$db->setQuery($query);
		if (!$db->query())
		{
			$errorMessage = $this->getDBO()->getErrorMsg();
			JError::raiseError(500, 'Error deleting: '.$errorMessage);
		}
	}

A Custom button relies on javascript from includes/js/joomla.javascript.js to execute the task indicated by the user:
function submitbutton(pressbutton) {
  submitform(pressbutton);
}
In more complex cases a user can override this javascript by implementing his own submitbutton function. To keep the toolbar buttons in working order, the user has to replace the document.adminForm.task.value with the pressbutton value:
function submitbutton(pressbutton) {
// Some conditions
  document.adminForm.task.value=pressbutton;
// More conditions
  submitform(pressbutton);
}

function submitbutton(pressbutton) {
	document.adminForm.task.value=pressbutton;
	submitform(pressbutton);
}

<img alt="edit" src="edit.png" onclick="return submitbutton('edit')" />
				
<img alt="del" src="delete.png" onclick="return submitbutton('remove')" />

http://localhost/Joomla15/index.php?id=&option=com_technics3&063ee764742c79602177e420d4d82a08=1&task=remove

http://localhost/Joomla15/index.php?id=&option=com_technics3&063ee764742c79602177e420d4d82a08=1&task=edit

function remove()
	{
		JRequest::setVar('view', 'single');
		$this->display();
	}

<?php
defined('_JEXEC') or die('Restricted access');
jimport('joomla.application.component.view'); 

?>
<div class="componentheading"><?php echo JText::_('VIEWTECH TITLE'); ?></div>


<script language="javascript" type="text/javascript">
	/**
	* Default function.  Usually would be overriden by the component
	*/
	function submitbutton(pressbutton) 
	{
		document.adminForm.task.value=pressbutton;
		submitform(pressbutton);
	}
    function ViewInfo(InfoId)
	{
		
		document.adminForm.techId.value=InfoId;
		alert(document.adminForm.techId.value);
		submitbutton('info');
	}
	function Edit(editTechId)
	{
		document.adminForm.techId.value=editTechId;
		submitbutton('edit')
    }
	
	function Delete(deletingId, deletingName)
	{
        var agree = confirm('<?php echo JText::_('AGREE ROW DELETE'); ?>'+' '+ deletingName+'?');
		if(agree)
		{
			document.adminForm.techName.value=deletingName;
			document.adminForm.techId.value=deletingId;
			submitbutton('remove');
		}
		else
		{
			return 0;
		}
    }
	function changePage(pagenumber)
	{
		/*<?$currentpagenumber=pagenumber?>*/
	}
	

</script>
<style type="text/css">
        .style1
        {
            width: 100%;
            border: 2px solid #FFFFFF;
            background-color: #C0C0C0;
			font-size: x-small;
			line-height: 1;
        }
		.style2 
        {
            width: 100%;
            border: 2px solid #FFFFFF;
            background-color: #eff1fe;
			font-size: x-small;
			line-height: 1;
        }
		.style3
        {
            width: 100%;
            border: 2px solid #FFFFFF;
            background-color: #f7f7f7;
			font-size: x-small;
			line-height: 1;
        }
		.style4
        {
            width: 99%;
            background-color: #ff9393;
			border-style: thin;
        }
		.styledownbtn
		{
			font-size: x-small;
		}
</style>
<?
$user =& JFactory::getUser();
?>
<form action="index.php?option=com_technics3" name="adminForm"  method="post" id="adminForm">
<table id="viewTable" class="style1";>
<tr bgcolor="#E0E0E0" style="text-align: center; font-weight: bold;">
        <td>
            <?php echo JText::_('TABLEHEAD NUMBER'); ?></td>
		<td>
            <?php echo JText::_('TABLEHEAD NAME'); ?></td>
        <td>
            <?php echo JText::_('TABLEHEAD TYPE'); ?></td>
        <td>
            <?php echo JText::_('TABLEHEAD NOTES'); ?></td>
        <td>
            <?php echo JText::_('TABLEHEAD COUNTRY'); ?></td>
        <td>
            <?php echo JText::_('TABLEHEAD REGION'); ?></td>
        <td>
            <?php echo JText::_('TABLEHEAD CITY'); ?></td>
        <td>
            <?php echo JText::_('TABLEHEAD PRICE'); ?></td>
		<td>
            <?php echo JText::_('TABLEHEAD ISFOTO'); ?></td>
        <td>
            <?php echo JText::_('TABLEHEAD DOIT'); ?></td>
    </tr>
<?php

foreach ($this->items as $row)
{

if(($i % 2)==0)
{
?>
<tr class="style3">
<?
}
else
{
?>
<tr class="style2">
<?
}
$i++;
?>

    
        <td>
            <?echo $this->pagination->limitstart+$i;?></td>
        <td>
            <?echo $row->name;?></td>
        <td>
            <?echo $row->type;?></td>
        <td>
            <?echo $row->notes;?></td>
        <td>
            <?echo $row->country;?></td>
        <td>
            <?echo $row->region;?></td>
        <td>
            <?echo $row->city;?></td>
        <td>
            <?echo $row->price;?></td>
		<td>
			<? if($row->imagename!=null){?><img alt="foto" src="tick.png" /><?}?></td>
        <td>
			<img alt="info" src="info.png" onclick="return ViewInfo(<?echo $row->id;?>)" />
			<?if(($user->id == $row->ownerid))
			{
			if($user->guest != 1)
			{?>
				<img alt="edit" src="edit.png" onclick="return Edit(<?echo $row->id;?>)" />
				
				<img alt="del" src="delete.png" onclick="return Delete(<?echo $row->id;?>, '<?echo $row->name;?>')" />
			<?}}?></td>
    </tr>
<?php
}
$firstrownumber=$rowsperpage+1;
?>
	<input type="hidden" name="id" value="<?php echo $row->id; ?>" />
	<input type="hidden" name="option" value="com_technics3" />
	
	<?php echo JHTML::_('form.token'); ?>
	<input type="hidden" name="task" value=""/>
	<input type="hidden" name="techId" value="" />
	<input type="hidden" name="techName" value="" />
	
	
	<img src="info.png" />-<?php echo JText::_('TABLEHEAD BUTTON INFO'); ?>
	<img src="edit.png" />-<?php echo JText::_('TABLEHEAD BUTTON EDIT'); ?>
	<img src="delete.png" />-<?php echo JText::_('TABLEHEAD BUTTON DEL'); ?>
</table>
<?php echo $this->pagination->getListFooter(); ?>
</form>