php - print_r（）包含一组数据

Working in Joomla, I have my model and view set up, but when the page is loaded, no data appears.

Model:

class mlsModelmls extends JModel
{
/**
 * Gets the info
 */
function mlsdata($column)
    {
    $db =& JFactory::getDBO();
    $query = "
      SELECT *
        FROM ".$db->nameQuote('#__mls')."
        WHERE ".$db->nameQuote('MSTMLSNO')." = ".$db->quote('4112065').";
    ";
    $db->setQuery($query);
    $row = $db->loadRow();
    print_r($row[$column]);
    }
}

View:

class mlsViewmls extends JView
{
function mlsnum($tpl = null)
    {
    $model = &$this->getModel();
    $mlsnum = $model->mlsdata(MSTMLSNO);
    $this->assignRef( 'mlsnum', $mlsnum );

    $agentuid = $model->mlsdata(MSTLISTBRD);        
    $this->assignRef( 'agentuid', $agentuid );

    $listdt = $model->mlsdata(MSTLISTDT);       
    $this->assignRef( 'listdt', $listdt );

          /** Some more assignRef() */

    parent::display($tpl);
    }
}

TMPL:

<h2 class="price">
    <?php echo $this->mlsnum; ?>
</h2>

When the page is loaded, the TMPL looks fine, but no data appears for the <?php echo $this->mlsnum; ?> reference call.

Does each assignRef() need it's own function?

Try to change

print_r($row[$column]);

to this:

return $row[$column];

And this one

parent::display($tpl);

to

return parent::display($tpl);

Otherwise it's just no-result.

Your mlsdata() method doesn't returning anything, therefore you are assigning nothing to the template variable.

Add return $row and remove the print_r.

Try changing your model function to this:

function mlsdata($column) {

    $db =& JFactory::getDBO();
    $query = " SELECT * FROM ".$db->nameQuote('#__mls')." WHERE ".$db->nameQuote('MSTMLSNO')." = ".$db->quote('4112065').";

    $db->setQuery($query);
    $row = $db->loadRow();

    return $row;
}