Data table columns sort laravel 5.4 - php

Question

This is my table
Controller code
public function index(Datatables $datatables,Request $request)
{
$model=Customer::whereIn('group_id',[1,4]);
return $datatables->eloquent($model)->editColumn('name',function($customer){
return $customer->name.' '.$customer->last_name;
})->editColumn('type',function($customer){
return $customer->customergroup?$customer->customergroup->customer_group:'';
})->editColumn('member_since',function($customer){
return $customer->created_at->format('d-m-Y');
})->editColumn('booking_made',function($customer){
return $customer->bookings?$customer->bookings->count():0;
})->editColumn('status',function($customer){
return '<span class="label label-sm '.($customer->status?"label-green-jungle":"btn red").'">'.($customer->status?"Active":"Inactive").'</span>';
})->rawColumns(['status'])->make(true);
}
Data table script code
$(function () {
table= $('#customer-table').DataTable({
serverSide: true,
processing: true,
bFilter: false,
ajax:"{{route('admin.customer.index') }}",
columns: [
{data: 'id',name:'id'},
{data: 'name',name:'name'},
{data: 'type',name:'group_id'},
{data: 'member_since',name:'created_at'},
{data: 'booking_made',name:'booking_made'},
{data: 'status',name:'status'},
{data: 'view',searchable:false},
],
"order": [[ 0,'desc' ]],
columnDefs: [{
targets: [6,8],
orderable: false
}]
});
});
From the table(image) You can see a column Bookings Made it is the count of total booking by each customer. So the problem is that how can i sort the table according to count.I can sort customer name,and status.