members - modificato ordinamento per età e data di nascita

routes/web.php

@@ -438,6 +438,9 @@ Route::group(['middleware' => 'tenant'], function () {
                 elseif ($column == 'current_status') {
                     $x = $x->orderBy('to_complete', 'DESC');
                     $x = $x->orderBy($column, $_GET["order"][0]["dir"]);
+                } elseif ($column == 'birth_date') {
+                    $x = $x->orderByRaw($column . ' IS NULL ' . $_GET["order"][0]["dir"])
+                        ->orderBy($column, $_GET["order"][0]["dir"]);
                 } else {
                     $x = $x->orderBy($column, $_GET["order"][0]["dir"]);
                 }