public function subcat(Request $req)
{
$html = '<option value="" selected>Choose Option</option>';
$category_id = $req->id;
$subcat_level1 = SubCatLevel1::where('category_id', $category_id)->get();
foreach ($subcat_level1 as $Subcat_level1) {
$html .= '<option value="' . $Subcat_level1->id . '">' . $Subcat_level1->name . '</option>';
}
echo $html;
}
