<?xml version="1.0" encoding="utf-8"?>
<form>
	<fieldset name="oficio.form" addfieldpath="/administrator/components/com_doportalhogar/models/fields">
		<field name="oficio"
				label="DOPORTALHOGAR_FIELD_OFICIO"
				alias="oficio"
				filter="STRING"
				type="cktext"/>
		<field name="icono" type="media"
			label="DOPORTALHOGAR_FIELD_ICONO"
			size="20"
			directory="oficios"
			class="inputbox"
			default=""
		/>
	</fieldset>
	<fields name="params">
		<fieldset name="params" label="Parametros">
			
			<field
				name="campos"
				type="checkboxes"
				label="campos"
				description="campos" >
					<option value="id_valor_por_presupuesto">Valor por presupuesto</option>
					<option value="id_garantia">Garantia</option>
			</field>
		</fieldset>
	</fields>
</form>

$params = $this->form->getFieldsets("params");
?>

<div class="width-40 fltrt">
<?php echo JHtml :: _ ( 'sliders.start' , 'helloworld-slider' ) ;
	foreach ( $params as $name => $fieldset ) :
		echo JHtml :: _ ( 'sliders.panel' , JText :: _ ( $fieldset -> label ) , $name . '-params' ) ;
		if ( isset ( $fieldset -> description ) && trim ( $fieldset -> description ) ) : ?>
			<p class="tip"> <?php echo $this -> escape ( JText :: _ ( $fieldset -> description ) ) ; ?> </p>
		<?php endif ; ?>
		<fieldset class="panelform" >
		<ul class="adminformlist">
        
			<?php foreach ( $this -> form -> getFieldset ( $name ) as $field ) : ?>
            <?php // echo '*<div align="left"><pre>'; print_r( $field  ); echo "</pre></div>*"; exit; ?>
            
				<li> <?php echo $field -> input ; ?> <?php // echo (int)$field -> getValue ; ?> </li>
                
                
                
			  <?php endforeach ; ?>
		</ul>
		</fieldset>
	<?php endforeach ; ?>
<?php echo JHtml :: _ ( 'sliders.end' ) ; ?>
</div>

public function populateState($ordering = null, $direction = null)
	{
		$app 		= JFactory::getApplication();
		$session 	= JFactory::getSession();
		
		// Load the parameters.
		$params = $app->getParams();
		$this->setState('params', $params);
		parent::populateState();

		parent::populateState($ordering, $direction);
	}

	public function getItem($pk = null)
	{

		if ($item = parent::getItem($pk)) {
			
			// Load the JSON string
			$params = new JRegistry;
			// loadJSON is @deprecated    12.1  Use loadString passing JSON as the format instead.
			//$params->loadString($this->item->params, 'JSON');
			$params->loadJSON($this->item->params);
			$this->item->params = $params;
			 
			// Merge global params with item params
			$params = clone $this->getState('params');
			$params->merge($this->item->params);
			$this->item->params = $params;			
		}


		return $item;
	}