Joomla - Component: Creating Form Input Data at Back End

After creating database, we need a friendly interface for adding data. Now, we create simple form for inputing data.

1. Open "admin.hello.php" within joomla/administrator/components/com_hello.
2. Replace with following code:

   <?php
   // no direct access
   defined( '_JEXEC' ) or die( 'Restricted access' );
   
   // to include admin.hello.html.php
   require_once( JApplicationHelper::getPath( 'admin_html' ) );
   
   $task	= JRequest::getCmd('task');
   
   // checks the $task variable and 
   // choose an appropiate function
   switch($task){
   	case 'add':
   		addHello();
   		break;
   		
   	case 'cancel';		
   		cancelHello();
   		break;
   		
   	default:
   		showHello();
   		break;
   
   }
   
   function addHello(){
   	$lists['published'] = JHTML::_('select.booleanlist', 'published' , 'class="inputbox"', $row->published);
   
   // display function
   	HTML_contact::addHello($lists);
   }
   
   function showHello(){
   // display function
   	HTML_contact::showHello();
   }
   
   ?>
   

3. Now, create the admin.hello.html.php file and add the following code:

   <?php
   defined( '_JEXEC' ) or die( 'Restricted access' );
   
   class HTML_contact
   {
   	function addHello($lists){
   		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','','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="task" value="" />        
           </form>
           <?php
   		
   	}
   	
   	function showHello(){
   		echo "Hello, World!";
   	}
   }
   ?>
   

Now, point your browser to http://localhost/joomla/administrator/index.php?option=com_hello&task=add