joomla mvc model results where ate they called? - oop

Question

I'm confused how to project models result in view in joomla 2.5
I have the controller which is initializing the model
class FrontpageMyComponentControllerItem extends JControllerLegacy
{
private $id;
public function display($cachable = false, $urlparams = array())
{
// Initialise variables.
$jinput = JFactory::getApplication()->input;
$this->id = $jinput->get('id');
$cachable = true;
$model = $this->getModel('item');
$result_in_view = $model->Item('23'); //$id what I get
// Set the default view name and format from the Request.
$viewName = $jinput->get('view', 'item');
$jinput->set('view', $viewName);
return parent::display($cachable, $safeurlparams);
}
}
now how do I have the result in my view?

Answer 1

In most components data (results) are being retrieved from Model by the View.
I'm not really sure why, but I guess it's to give more power to Views.
FrontpageMyComponentViewItem extends JViewLegacy
{
/** #var array Data are stored here */
public $items;
public function display($tpl = null)
{
/** Retrieve data from Model */
$items = $this->get('Items');
// Check for errors.
if (count($errors = $this->get('Errors')))
{
// Raise an error
JError::raiseWarning(500, implode("\n", $errors));
return false;
}
// Assign data, so layout can access these
$this->items =& $items;
parent::display($tpl);
}
}
This is different than usual MVC implementations where Controller is retrieving data from Model and passing it to View.
If you'd like to see example of this in Joomla, look at MediaController in Joomla 2.5.
Sometimes the View may not be necessary (output is in JSON) and then you may retrieve data inside controller and output it instantly using echo like in search suggestions
There are new MVC (vs legacy) classes in Joomla, but core components still don't use them.