How to properly get an array from jInput?

Question

Maybe it's weary eyes, but I am unable to retrieve a posted array from jInput:

$jinput = JFactory::getApplication()->input;
$test1 = $jinput->get('Itemid');
$test2 = $jinput->get("filter");
$test3 = $jinput->get("filter['subjects']");

$test1 successfully retrieves the Itemid, but various ways of retrieving 'filter' only ever results in an empty array.

JInput Object
(
    [options:protected] => Array
        (
        )

    [filter:protected] => JFilterInput Object
        (
            [tagsArray] => Array
                (
                )

            [attrArray] => Array
                (
                )
        )
    [data:protected] => Array
        (
            [option] => com_xyz
            [view] => titles
            [Itemid] => 241
            [filter] => Array
                (
                    [subjects] => Array
                        (
                            [0] => 6
                        )
                )
            [limit] => 25
            [limitstart] => 0

I don't mind feeling stupid for an oversight at this point, I'm just tired of fighting with it. Any assistance is appreciated. :)

Answer 1

Try this:

$app        = JFactory::getApplication();
$jinput     = $app->input;
$filter     = $jinput->getVar('filter',array());

Hope it works for you

Answer 2

I misread or misunderstood the documentation of $jinput->getArray(). I understood this to return a subset of the input variables, as specified in an array of the variables you're interested in. While this may be true, it will also return all input variable if an empty array is supplied:

$allfields = $jinput->getArray(array())

Answer 3

Just been messing around with this a little.

Try adding a blank default value and filter type as arguments, like so:

$test2 = $jinput->get('filter', '', 'RAW');