如何在ajax中拆分数组？

Question

var rows_selected = [];
var rowId = data[0]; // conten [24,25,26,27 etc]
var namaFile = data[4]; // content [foto1.JPG, foto2.JPG, foto3.JPG, foto4.JPG ]

//If checkbox is checked and row ID is not in list of selected row IDs
rows_selected.push(rowId,namaFile);

var dataId=[];
$.each(rows_selected, function(index, rowId, namaFile){
  dataId.push(rowId,namaFile);
});

in ajax i sent dataId to controller

$.ajax({
   data: {"iddata": "[{"+dataId+"}]"},
});

but in controller iddata receive just one array like this 24,6a5236ee48848e648553a35d64c4f64dJPG,25,a31ea31db31483506fbd95e463d4c8ffJPG,26,042fd1eee499e5bb9c93853c0299b42eJPG,27,e243845bcc0447324d449e37b271c9ebJPG,28,8f331fa2a713f5268ab71698a65185b6JPG

some code in controller

$iddata=array();
    $iddata=array($_GET['iddata']);
    $a=explode(",", $iddata[0]);
    $b=preg_replace('/[^A-Za-z0-9\-]/', '', $a);
    $jumlahdata=count($b)/2;
    for($i=0;$i<$jumlahdata;$i++)
    {
        //delete on database
       $data=array('id_perjal'=>$b[$i]);
       $this->M_perjal_terpasang->Delete_Foto($data);
        //and i want deleting foto with unlink
       unlink("assets/images/uploads/"$b[$i]);
    }

Answer 1

I would start by using a naming convention, and name arrays with plural words, so that you know that namaFiles (plural) is an array, and one element of it is called namaFile (singular). This will avoid some confusion.

Let's say that two checkboxes are checked, and their IDs are different, then you would somehow add two rows to rows_selected. Currently, you push those values one after the other so that you get an array like [24, 'foto1.JPG', 27, 'foto4.JPG'], but you really want to get them grouped in pairs, like this:

[{rowId: 24, namaFile: 'foto1.JPG'}, {rowId: 27, namaFile: 'foto4.JPG'}]

So you should push the values like this (supposing you have an index):

rows_selected.push( {rowId: rowIds[index], namaFile: namaFiles[index]} );

This you would repeat for other pairs that need to be added.

In your Ajax data, you should use a JSON string, like this:

var ajaxobj = {
   data: {"iddata": JSON.stringify(rows_selected) },
}

On the server side you would convert the JSON back to an associative array, and then access the two elements of each pair by their key name:

$iddata = $_GET['iddata'];
$a = json_decode($iddata, true);
foreach($a as $pair) {
   //delete in database
   $data = array('id_perjal' => $pair['rowId']);
   $this->M_perjal_terpasang->Delete_Foto($data);
   //delete foto with unlink
   unlink("assets/images/uploads/" . $pair['namaFile']);
}