Joomla - Component: Editing Data

After create list screen, now we will build form editing data. You can edit a data by click id row in list table. Then, form editing data will display. Click save or apply button to save data.

1. Open "admin.hello.html.php" file, and add following bold code to showhello():

       <?php
   	
       $k = 0;
   	for($i=0, $n=count($rows); $i < $n ; $i++)
   	{
   $row = &$rows[$i];
   $checked 	= JHTML::_('grid.id', $i, $row->id);
   $published 	= JHTML::_('grid.published', $row, $i); 
   // prepare link for id column
   $link 		= JRoute::_( 'index.php?option=com_hello
   &task=edit&cid[]='. $row->id );
   ?<
   <tr class="<?php echo "row$k"; ?>">
   <td><?php echo $checked?></td>
   // show link, that will clicked to go to edit form page
   <td><a href="<?php echo $link; ?>">
       <?php echo $row->id?></a></td>
   <td><?php echo $row->message?></td>            
   <td><?php echo $published?></td>            
   </tr>
           <?
   $k = 1 - $k;
   	}
   	?>
   

2. Add editHello() function:

   	function editHello(&$lists, &$row){
   JRequest::setVar( 'hidemainmenu', 1 );
   $editor	=& JFactory::getEditor();
   		?>
           
   <script language="javascript" type="text/javascript">
   <!--
   function submitbutton(pressbutton) {
   var form = document.adminForm;
   if (pressbutton == 'cancel') {
   submitform( pressbutton );
   return;
   }
   			
   			
   submitform( pressbutton );
   }
   //-->
   </script>        
           
   <form action="index.php" method="post" name="adminForm">
   <table class="admintable">
   <tr>
   <td class="key">
   <label for="message">
   <?php echo JText::_( 'Message' ); ?>:
   </label>
   </td>
   <td >
   <?php
   echo $editor->display('message',
   $row->message,'100%','250','40','6');
   ?>
   </td>
   </tr>
   <tr>
   <td class="key">
   <label for="message">
   <?php echo JText::_( 'Published' ); ?>:
   </label>
   </td>
   <td >
   <?php
   echo $lists['published'];
   ?>
   </td>
   </tr>                
   </table>        
   <input type="hidden" name="option" value="com_hello" />
   <input type="hidden" name="id" value="<?php echo $row->id?>" />        
   <input type="hidden" name="cid[]" value="<?php echo $row->id; ?>" />        
   <input type="hidden" name="task" value="" />        
   </form>
           <?php		
          }	
   

3. Open "admin.hello.php", add following code: $task = JRequest::getCmd('task'); $id = JRequest::getVar('id', 0, 'get', 'int');
4. update like following code:

   switch($task){
   
     case 'edit':
       editHello();
       break;
   
     case 'add':
       addHello();
       break;
   		
     case 'cancel';		
       showHello();
       break;
   		
     case 'save';	
       case 'apply';	
       saveHello();
       break;		
   		
     default:
       showHello();
       break;
   
   }
   

5. Add editHello() function:

   function editHello()
   {
   	$db		=& JFactory::getDBO();
   
   	$cid 	= JRequest::getVar('cid', array(0), '', 'array');
   	JArrayHelper::toInteger($cid, array(0));
   	
   	$id 	= $cid[0];
   
   	$row =& JTable::getInstance('hello', 'Table');
   	// load the row from the db table
   
   	$row->load( $id);
   	
   	$lists = array();
   	$lists['published'] = JHTML::_('select.booleanlist', 'published' , 'class="inputbox"', $row->published);
   
   	// display function 
   	HTML_contact::editHello(&$lists, &$row);
   }
   

6. Last, open "toolbar.hello.php". update like following code:

   switch ( $task )
   {
   	case 'add'  :
   	case 'edit'  :	
   		TOOLBAR_hello::_NEW();
   		break;
   
   	default:
   		TOOLBAR_hello::_DEFAULT();
   		break;
   }