I tried to get into the fly of an item, along with the icon of yes or not the name to column or field belongs.
So that if the result is not just not appears the icon and name of the field.
any idea how to print Jdom do with field name

<?php echo JDom::_('html.fly.bool', array(
'dataKey' => 'bao_en_hab_principal',
'dataObject' => $this->item,
));
?>

I do not understand your question.

This example you wrote above will send $this->item->bao_en_hab_principal to JDom

html.fly.bool mean that if your value is NULL, 0, or 1 then it will show the correct icon.

I know the final UI rendering is not really accomplished yet. Possible optimizations and Joomla standards.

Can you describe better your point please ?

I would like to know how to return the name and value, for example:
closet: yes.
but this jdom return it, so if the field is not NULL empty name and value will appear.
can be done from JDOM?

If you want to reuse that on various pages, then create a new JDom class.

more simple :

create a function in your concerned view file.

then in the template :

sorry but do not understand how to do it, I have to put here:

protected function renderBool ($ value, $ params ... / / do not get to add here)
{
$ html ='';
... / / Do not get to add here
return $ html;
}

please help me a bit I do not understand