laravel datatables ajax pagination code example

Example: ajax jquery datatable display records with pagination in laravel

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Employees;

class EmployeesController extends Controller{

   public function index(){
      return view('employees.index'); 
   }

   /*
   AJAX request
   */
   public function getEmployees(Request $request){

     ## Read value
     $draw = $request->get('draw');
     $start = $request->get("start");
     $rowperpage = $request->get("length"); // Rows display per page

     $columnIndex_arr = $request->get('order');
     $columnName_arr = $request->get('columns');
     $order_arr = $request->get('order');
     $search_arr = $request->get('search');

     $columnIndex = $columnIndex_arr[0]['column']; // Column index
     $columnName = $columnName_arr[$columnIndex]['data']; // Column name
     $columnSortOrder = $order_arr[0]['dir']; // asc or desc
     $searchValue = $search_arr['value']; // Search value

     // Total records
     $totalRecords = Employees::select('count(*) as allcount')->count();
     $totalRecordswithFilter = Employees::select('count(*) as allcount')->where('name', 'like', '%' .$searchValue . '%')->count();

     // Fetch records
     $records = Employees::orderBy($columnName,$columnSortOrder)
       ->where('employees.name', 'like', '%' .$searchValue . '%')
       ->select('employees.*')
       ->skip($start)
       ->take($rowperpage)
       ->get();

     $data_arr = array();
     
     foreach($records as $record){
        $id = $record->id;
        $username = $record->username;
        $name = $record->name;
        $email = $record->email;

        $data_arr[] = array(
          "id" => $id,
          "username" => $username,
          "name" => $name,
          "email" => $email
        );
     }

     $response = array(
        "draw" => intval($draw),
        "iTotalRecords" => $totalRecords,
        "iTotalDisplayRecords" => $totalRecordswithFilter,
        "aaData" => $data_arr
     );

     echo json_encode($response);
     exit;
   }
}