We are going to add options and support for Add/Edit/Delete buttons/columns in future versions of Datagrid's DataTables. In the meantime we can only give an outline of how to achieve that:

<?php
DataTables::create(array(
    ...
    "columns" => array(
        ...
        "Edit" => [
            "formatValue" => function() { 
                return "<button type='button' onclick='editRow(this);'>Edit</button>
                        <button type='button' onclick='updateRow(this);' style='display: none' >Update</button>
                ";
            }
        ],
        "Delete" => [
            "formatValue" => function() { 
                return "<button type='button' onclick='deleteRow(this);'>Delete</button>";
            }
        ],
    ),
));
?>
<script>
    function deleteRow(btn) {
        //Get row from btn
        //Get row's column id data 
        //Submit row id data via either form submit or XHR to delete it
        //If using form submit, DataTables should be refreshed as well
        //If using XHR, delete this row with DataTables api: https://datatables.net/reference/api/row().remove()
    }
    function editRow(btn) {
        //Get row from btn
        //Hide button Edit, show button Update,
        //Loop through row's td to change its text to input type text, type number, etc
    }
    function updateRow(btn) {
        //Get row from btn
        //Get row's column data
        //Submit row data via either form submit or XHR to update it
        //If using form submit, DataTables should be refreshed as well
        //If using XHR, hide Update button, show Edit button
        //Loop through row's td to change its input to edited value if request succeeds, old value  if request fails
    }
</script>

In case you use "serverSide" => true pls try to add the Edit, Delete columns like this:

    DataTables::create(array(
        'dataSource' => function() {
            return $this->src('mySrc')
            ->query('select * from ...')
            ->pipe(new \koolreport\processes\Map([
                "{value}" => function($row) {
                    $row["Edit"] = "<button class='btn btn-secondary' type='button' onclick='editRow(this);'>Edit</button>
                            <button type='button' onclick='updateRow(this);' style='display: none' >Update</button>";
                    $row["Delete"] = "<button class='btn btn-secondary' type='button' onclick='deleteRow(this);'>Delete</button>";
                    return $row;
                }
            ]))
            ;
        },
        "columns"=>array(
            ...
            "Edit" => array(),
            "Delete" => array(),
        ), 
        "serverSide"=>true,
        "method"=>'post', //default method = 'get'

Oh, I see. Pls add the following column meta for fake columns which you don't want to filer/search or sort/order on server side:

    "columns" => array(
            ...
            "Actions" => array(
                "searchable" => false,
                "orderable" => false,
            )
    )

Let us know if there's any issue left. Tks,

Please comment out "orderable" => false for "Actions" column. Just don't click on Sort icon in that column. Other columns could be sorted. We will fix this server side's "orderable" meta in the next version of DataTables. Tks,

So you want to search on server side both real and fake columns, don't you? Real columns could be searched using sql where clause but for fake columns we would have to use KoolReport's Filter process.