Backend Delete button, doest parse the cid[] array that contains the id of checked, checkboxes

Question

In the admin section of a component, i have this form:

I just added the checkboxes in the left following this Joomla API.

MyCode:

$i=$rows_num;
$checked    = JHTML::_( 'grid.id', $i, $voter["vid"] );
echo $checked;

And the Delete button shown in picture like that:

$bar->appendButton( 'Link', 'delete', 'Διαγραφή συγκεκριμένων ψήφων', 'index.php?option=com_exnetpolls&deleteit='.$isnotempty.'&gotcha=yo ');

The component isnt mine and the creator didnt use a controller ( every single action is executed in exnetpolls.php file ) so i created a new file getitdeleted.php and in exnetpolls.php i added this code :

exnetpolls.php (first file that getting executed)

if($_GET['deleteit']!="" && $_GET['deleteit']!=NULL){ 
    include("getitdeleted.php");
}

And in getitdeleted.php

<?php
defined('_JEXEC') or die('Restricted access');
echo "test";
$cid = JRequest::getVar('cid',array(),'','array');
var_dump($cid);
if(isset($_GET['gotcha'])){
echo "worked".$_GET['deleteit'];
//code to delete from db
unset($_GET['gotcha']);
}

I know the way im using is a bit retarted,but it works except that the:

$cid = JRequest::getVar('cid',array(),'','array');
var_dump($cid);

returns array(0) {}

Altough if i type in my browser :

index.php?option=com_exnetpolls&deleteit=18&gotcha=yo&cid[]=2

the var_dump returns : array(1) { [0]=> string(1) "2" }

I also noticed that i could somehow parse the value with jquery using the id of input, but i would like to do that if it was my last option.

<input id="cb15" name="cid[]" value="2278" onclick="Joomla.isChecked(this.checked);" title="Πλαίσιο ελέγχου για τη σειρά 16" type="checkbox">

I tried also to pass the cid[] somehow with the delete button like so:

$bar->appendButton( 'Link', 'delete', 'Διαγραφή συγκεκριμένων ψήφων', 'index.php?option=com_exnetpolls&deleteit='.$isnotempty.'&gotcha=yo&cid[] ');

But it doesnt work.Could a joomla specialist enlight me please on what am i doing wrong here ?

EDIT: forgot to mention that i would like to check before pressing the DELETE button if cid[]==NULL so i can change the value of $isnotempty . when i var_dump the $cid = JRequest::getVar('cid',array(),'','array'); in the file that i create the input, i get again a null array.

Answer 1

Based on our comments I would suggest that your delete button invokes only GET action. That means all input fields are not processed. Try to use normal <form> with action="post" like:

<form action="<?php echo JRoute::_('index.php?option=com_exnetpolls&deleteit='.$isnotempty.'&gotcha=yo'); ?>" method="post" name="adminForm" id="adminForm">