Laravel Datatables ajax unable to send a parameter to query - mysql

Question

I am using Laravel Datatables. I am successfully in loading data from a MySQL database through a query.
The problem I have is to be able to query the table by month by sending a month number. I am not able to successfully send a parameter containing the month number to my ajax function on the back end.
I tried many variations but nothing worked.
I get "Undefined index: month"
Here are my code snippets:
Javascript ajax:
<script>
$(function() {
var month = "<?= $brandData['month'] ?>"; // contains a month number
$('#accounts').DataTable({
processing: true,
serverSide: true,
type: "POST",
ajax: '{!! url('brand_ajax') !!}',
data : {'month' : month },
columns: [
{ data: 'brand_name', name: 'brand_name' , className: 'text-xl-left'},
{ data: 'brand_volume', name: 'brand_volume', className: 'text-xl-right' },
{ data: 'brand_margin', name: 'brand_margin' , className: 'text-xl-right'},
{ data: 'brand_commission', name: 'brand_commission', className: 'text-xl-right' },
]
});
});
</script>
Here is my ajax function to return data
public function brand_ajax()
{
$month = $_POST["month"];
$brands = SaleInvoice::select(DB::raw('brands.name as brand_name,
avg(NULLIF(margin,0)) as brand_margin,
sum(commission) as brand_commission,
sum(amt_invoiced) as brand_volume
'))
->join('brands', 'brands.ext_id', '=', 'saleinvoices.brand_id')
->where('brands.is_active', '=', true)
// ->whereRaw('MONTH(saleinvoices.invoice_date) = ?', (11))
->whereRaw('MONTH(saleinvoices.invoice_date) = ?', ($month))
->having('brand_volume', '>', 0)
->groupBy('brands.name')
->get();
return DataTables::of($brands)
->editColumn('brand_commission', function ($brand) {
return number_format($brand->brand_commission, 2);
})
->editColumn('brand_margin', function ($brand) {
return number_format($brand->brand_margin, 2);
})
->editColumn('brand_volume', function ($brand) {
return number_format($brand->brand_volume, 2);
})
->make(true);
}

Answer 1

I resolved it by myself. I just added the parameter to the URL string.
url('brand_ajax/' . $month)