($tpl); ? - Joomla! Forum - community, help and support

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i looked through beginners tutorial , able understand of being documented directly or implied reference, except this....($tpl);

code: select all

class helloviewhello extends jview
{
    function display($tpl = null)
    {
------------------
------------------
------------------
------------------
        parent::display($tpl);
    }
}


$tpl defined , used , not mentioned @ in tutorial, leaving poor newbies me in dark.

question : $tpl ? used ? defined ? there global $tpl?
i above example taken tutorial, $tpl  defined null , call parent jview made null.
why bother defining @ ?

i'm sure there reason this. if explained.
thanks.

p/s tutorials simple , clear. , have effect of supressing cryptic joomla classes , terminologies, perhaps speak php only. fine that's langauge j! built upon. thank tutorial.

hi,

jalil wrote:i'm sure there reason this. if explained.
thanks.

if drill down jview class wil find display() call loadtemplate($tpl) create filename template load.
this filename created as
  $file = isset($tpl) ? $this->_layout.'_'.$tpl : $this->_layout;
hence if $tpl happens null, name comes $this->_layout, otherwise it's appended: $this->_layout.'_'.$tpl

in example frontpage can have layout called 'default' , knows 2 views: 'list' , 'item'.
if 1 of these view-names provided template file becomes 'default_list.php' or 'default_item.php'. these sort of "subtemplates" "default.php" template.
it's matter of names, schemas, , defaults ;)

have fun,
cirtap





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