public function generate(Request $request) { $data = ''; $contacts = Contact::all(); if ($request->input('kota')) { $contacts = Contact::whereIsSurabaya($request->input('kota'))->get(); } $no = 1; foreach ($contacts as $contacts) { if ($contacts->no_hp != null) { if ($no == 1) { $data = $contacts->no_hp; } else { $data = $data . ', ' . $contacts->no_hp; } } $no++; } return $data; }