Datatable

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September 18, 2022

3:40 am

15 Comments on Datatable

Javascript

listing.html

<!-- https://datatables.net/examples/server_side/simple.html -->
<!-- https://datatables.net/manual/ajax -->
<!-- https://datatables.net/manual/ajax#Column-data-points -->
<!-- https://stackoverflow.com/questions/64526856/how-to-add-edit-delete-buttons-in-each-row-of-datatable -->

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.12.1/css/jquery.dataTables.css">
  
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/5.2.0/css/bootstrap.min.css">
    <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.12.1/css/dataTables.bootstrap5.min.css">

    <script type="text/javascript" charset="utf8" src="https://code.jquery.com/jquery-3.6.1.js"></script>
<script type="text/javascript" charset="utf8" src="https://cdn.datatables.net/1.12.1/js/jquery.dataTables.js"></script>
    <title>Document</title>
</head>
<body>
<table id="example" class="display table table-striped" style="width:100%">
        <thead>
            <tr>
                <th>Name</th>
                <th>Address</th>
                <th>Salary</th>
                <th>Action</th>
            </tr>
        </thead>
    </table>
</body>
<script>
    $(document).ready(function () {
    $('#example').DataTable({
        processing: true,
        serverSide: true,
        ajax: 'http://ciacloud.in/juhi/rems/get_employees.php',
        columns: [
            { data: 'name'},
            { data: 'address'},
            { data: 'salary'},
            { 
                data: 'id',
                render: (data,type,row) => {
                    console.log({data,type,row})
                   return `<a href='edit_form.php?id=${data}'>Edit</a> | <a href='delete.php?id=${data}'>Delete</a>`;
                 }
            }
        ],
        columnDefs: [
            { orderable: false, targets: -1 },
            {
                "defaultContent": "-",
                "targets": "_all"
            }],
            order: [0,1,2,3],
    });
});
</script>
</html>

get_employees.php

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$params = $_REQUEST;
header('Access-Control-Allow-Origin: *');

$search = isset($params['search']['value'])  && $params['search']['value'] != '' ? $params['search']['value'] : '';

try {
  $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
  $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

  $where = '';

  if($search !== '')
	  $where = " name LIKE '$search%' ";
  else
	  $where = " 1 = 1 ";

  $sort_columns = ['name', 'address', 'salary'];
  $sort_column_index = $params['order'][0]['column'];
  $sort_order = isset($params['order'][0]['dir']) && $params['order'][0]['dir'] != 1 ? $params['order'][0]['dir'] : 'desc';

  $order_by = " $sort_columns[$sort_column_index] $sort_order";
	
  $offset = $params['start'];
  $limit = $params['length'];

  $sql = "SELECT * FROM employees WHERE $where ORDER BY $order_by LIMIT $offset, $limit";
  $stmt = $conn->prepare($sql);
  $stmt->execute();

  // set the resulting array to associative
  $result = $stmt->setFetchMode(PDO::FETCH_ASSOC);
  $employees = $stmt->fetchAll();

} catch(PDOException $e) {
  echo "Error: " . $e->getMessage();
}

$count_sql = "SELECT COUNT(*) FROM employees WHERE $where";
$result = $conn->prepare($count_sql); 
$result->execute(); 
$totalRecords = $result->fetchColumn(); 

$conn = null;


$json_data = array(
		"draw"            => intval( $params['draw'] ),
		"recordsTotal"    => intval( $totalRecords ),
		"recordsFiltered" => intval($totalRecords),
		"data"            => $employees,
		"count_sql"	=> $count_sql,
		"sql"		=> $sql,
	);

echo json_encode($json_data);

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