how can i update multiple use php/ajax in datatable checkbox? - php

Question

I have a datatable filled in by SALARIES with checkbox and button update_all and dropdownlist contains CHANTIER_IDs, I want to do multiple update of CHANTIER_IDs using php / ajax .CHANTIER_IDs of SALARIES cheked in datatable will be modified by value select in dropdownlist.
I want when I click on button update all the values of chantire_ids of cheked SALARIES will be modified by the value selected in dropdownlist
affectation.php
<div class="container" id="app">
<h3>affecter salarie a chantier</h3>
<div class="form-group col-md-3 ">
<select class="form-control" id="chantier">
<?php
include "../conn/connexion.php";
$query = "SELECT id,chantier FROM chantier";
$result = mysqli_query($con,$query);
$n = mysqli_num_rows($result);
for ($i=0; $i <$n ; $i++) {
$row = mysqli_fetch_array($result);
?>
<option value="<?php echo $row[0]; ?>" ><?php echo $row[1];
} ?></option>
</select>
</div>
<button class="btn btn-success update-all" data-url="">Update All</button>
<button style="margin: 5px;" class="btn btn-danger btn-xs delete-all" data-url="">Delete All</button>
<table class="table table-bordered">
<tr>
<th><input type="checkbox" id="check_all"></th>
<th>S.No.</th>
<th>nom & prenom</th>
<th>cin</th>
<th>matricule</th>
<th>chantier_ids</th>
</tr>
<?php
$query1 = "SELECT id,nom,prenom,cin,matricule,chantier_id
FROM salaries";
$result1 = mysqli_query($con,$query1);
$n1 = mysqli_num_rows($result1);
for ($i=0; $i <$n1 ; $i++) {
$row1 = mysqli_fetch_array($result1);
?>
<tr id="tr_<?php $row[0] ?>">
<td><input type="checkbox" class="checkbox" data-id="<?php $row[0] ?>"></td>
<td><?php echo $row1[0]; ?></td>
<td><?php echo $row1[1]; ?> <?php echo $row1[2]; ?></td>
<td><?php echo $row1[3]; ?></td>
<td><?php echo $row1[4]; ?></td>
<td><?php echo $row1[5]; ?></td>
</tr>
<?php
}
?>
</table>
</div>
javascript
<script type="text/javascript">
$(document).ready(function () {
$('#check_all').on('click', function(e) {
if($(this).is(':checked',true)) {
$(".checkbox").prop('checked', true);
} else {
$(".checkbox").prop('checked',false);
}
});
$('.checkbox').on('click',function(){
if($('.checkbox:checked').length == $('.checkbox').length){
$('#check_all').prop('checked',true);
}else{
$('#check_all').prop('checked',false);
}
});
$('.update-all').on('click', function(e) {
if(confirm("Are you sure you want to delete this?")){
var id = [];
}
$(':checkbox:checked').each(function(i){
id[i] = $(this).val();
});
if(id.length === 0) //tell you if the array is empty
{
alert("Please Select atleast one checkbox");
}else{
$.ajax({
url:'delete.php',
method:'POST',
data:{id:id},
success:function(){
for(var i=0; i<id.length; i++){
$(this).parents("tr")
.children("td:last-child")
.text($('#app')
.children("option:selected")
.text());
}
}
});
}
});
});
</script>
updateall.php
<?php
include "conn/connexion";
if(isset($_POST["id"])) {
foreach($_POST["id"] as $id) {
$query = "UPDATE salaries
SET chantier_id = ". $id ."
WHERE id = '".$id."'";
mysqli_query($con, $query);
}
}
?>