TOPIC: How to show custom fields in back end list?

<?php

		$k = 0;

		$i = 0;

		$fieldNameMap = $this->mUser->table->TableUserfield->Tablefield->mapNametoId();
		
        if($this->rows)
		foreach($this->rows as $row){
            $fee = $this->mUser->table->TableFee->findByUserId($row->userId);
			 
			$name = array();

			$link = 'index.php?option=com_dtregister&task=edit&controller=user&cid[]='. $row->userId;

			$field_values = $this->mUser->table->TableUserfield->findByUserId($row->userId);
			
			$field_address = $field_values[$fieldNameMap['address']];
			
			$field_lastname = $field_values[$fieldNameMap['lastname']];
			
			$field_zip = $field_values[$fieldNameMap['zip']];
			
			$field_city = $field_values[$fieldNameMap['city']];
			
			$field_phone = $field_values[$fieldNameMap['phone']];
			
			$field_studiengang = $field_values[$fieldNameMap['studiengang']];
			
			$field_semester = $field_values[$fieldNameMap['semester']];

			$name = array();
            if(isset($field_values[$fieldNameMap['firstname']])){
			 $name[] = $field_values[$fieldNameMap['firstname']];
			}
			$name = implode(" ",array_filter($name));
			$email = "";
			if(isset($field_values[$fieldNameMap['email']])){
			$email = $field_values[$fieldNameMap['email']];
			}

		 ?>

         <tr class="<?php echo "row$k"; ?>" >

           <td><?php echo $pageNav->getRowOffset( $i ); ?></td>

           <td><?php echo $checked = JHTML::_('grid.id', $i, $row->userId); ?></td>

           <td align="center">[url=<?php echo $link?>]<?php echo $name; ?>[/url]</td>
		   
		   <td align="center"><?php echo $field_lastname; ?></td>

           <td align="center">[url=mailto:<?php echo stripslashes($email);?>]<?php echo stripslashes($email);?>[/url]</td>
			
		   <td align="center"><?php echo $field_address; ?></td>
		   
		   <td align="center"><?php echo $field_zip; ?></td>
		   
		   <td align="center"><?php echo $field_city; ?></td>
		   
		   <td align="center"><?php echo $field_phone; ?></td>
		   
		   <td align="center"><?php echo $field_studiengang; ?></td>
		   
		   <td align="center"><?php echo $field_semester; ?></td>
			
           <td align="center"><?php 
		    $evtTable = $this->getModel('event')->table;
			$evtTable->slabId = $row->slabId;
			$evtTable->dtstart = $row->dtstart;
			$evtTable->title = $row->title;
		    echo $evtTable->displayTitle(); ?> </td>

           <td align="center"><?php echo DTreg::numberFormat($row->fee,2);?></td>

           <td align="center"><?php echo $row->register_date;?></td>

           <td align="center"><?php echo $row->confirmNum; ?></td>

           <td align="center">
				<?php 
				if((isset($fee->fee) && $fee->fee >0) || $fee->payment_method == "offline_payment"){
				    	if ( (isset($fee) && $fee != "") && isset($pMethods[$fee->payment_method])  ) echo $pMethods[$fee->payment_method]; 
				else if (isset($fee->payment_method)) echo $fee->payment_method;
				}else{
				  echo Jtext::_('DT_FREE');
				}
	
				?>
           </td>

           <td align="center"><?php echo (isset($fee->fee) && $fee->fee >0)?DtHtml::gridTask($row, $i,'fee_status'):''; ?></td>

           <td><?php 
		    if(!count($this->mUser->table->TableMember->findByUserId($row->userId))) {
				
		   		echo DtHtml::gridTask($row, $i,'attend');
				
			}
		   ?></td>

 

             <td align="center"><?php 

				  if($row->cancel == 1){

				    echo DTreg::numberFormat($row->due,2);

				  }else{

				    echo DTreg::numberFormat(($row->fee-$row->paid_amount),2);

				  }

				?>

                </td>

                 <td align="center"><?php 
	  
				    echo $this->mUser->table->statustxt[$row->user_status];

				?></td>

         </tr>

         <?php

		 $k = 1 - $k;

		 $i++;

		}

		?>