Custom Actions

You can enable custom actions on your buttons, as follows:

Update UsersDataTable class and overload the actions property. Here we are disabling the csv and pdf action (so they cannot be fired by hijacking the request) and enabling a myCustomAction.

namespace App\DataTables;

use App\User;
use Yajra\DataTables\Services\DataTable;

class UsersDataTable extends DataTable
{
    protected $actions = ['print', 'excel', 'myCustomAction'];

    public function html()
    {
        return $this->builder()
                    ->columns($this->getColumns())
                    ->parameters([
                        'dom'          => 'Bfrtip',
                        'buttons'      => ['print', 'excel', 'myCustomAction'],
                    ]);
    }

    public function myCustomAction()
    {
        //...your code here.
    }

}

Take a look at Yajra\DataTables\Services\DataTable to see how to fetch and manipulate the data (functions excel, csv, pdf).