List Detail Revisi

public function listdetailrevisi_post()
    {
        $username    = trim($this->post('username'));
        $level       = trim($this->post('level'));
        $revision_id = trim($this->post('revision_id'));

        if ($username == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Username tidak ditemukan.',
            ];
        } elseif ($revision_id == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'ID Revisi kosong.',
            ];
        } elseif ($level == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Level tidak ditemukan.',
            ];
        } else {
            $listDetail = $this->db->order_by('detail_id', 'desc')->get_where('v_detailrevisi', array('revision_id' => $revision_id))->result();
            if (count($listDetail) == 0) {
                $response = [
                    'resp_error' => false,
                    'resp_msg'   => 'Tidak Ada Data',
                ];
            } else {
                $no = 1;
                foreach ($listDetail as $r) {
                    if ($r->detail_image != '') {
                        $file = base_url('img/image_revisi/' . $r->detail_image);
                    } else {
                        $file = '';
                    }

                    if ($level == 'Admin') {
                        $info_user = $r->user_name;
                        if ($r->user_avatar == '') {
                            $foto = base_url('img/no_avatar.png');
                        } else {
                            $foto = base_url('img/icon/' . $r->user_avatar);
                        }
                    } else {
                        if ($r->detail_level == 'Admin') {
                            $info_user = 'Reviewer ' . $no;
                            $foto      = base_url('img/no_avatar.png');
                        } else {
                            $info_user = $r->user_name;
                            if ($r->user_avatar == '') {
                                $foto = base_url('img/no_avatar.png');
                            } else {
                                $foto = base_url('img/icon/' . $r->user_avatar);
                            }
                        }
                    }

                    $response['items'][] = [
                        'resp_error'    => false,
                        'detail_id'     => $r->detail_id,
                        'level'         => $r->detail_level,
                        'user_username' => $r->user_username,
                        'tanggal'       => date("d-m-Y", strtotime($r->detail_date_post)),
                        'deskripsi'     => trim($r->detail_message),
                        'nama'          => $info_user,
                        'foto'          => $foto,
                        'file'          => $file,
                    ];

                    $no++;
                }
            }
        }

        $this->response($response, 200);
    }