Gimana caranya update statuspost gini ya? biar bisa dirubah dari viewny tanpa harus ke mysql

ane mau update post gan lewat edit admin tapi selalu ga masuk kenapa ya gan cuman balik2 eror engga cuman ga kerubah aja

<!-- Begin Page Content -->
        <div class="container-fluid">

            <!-- Page Heading -->
            <div class="d-sm-flex align-items-center justify-content-between mb-4">
                <h1 class="h3 mb-0 text-gray-800"><?= $title; ?></h1>
            </div>

            <!-- Content Row -->
            <div class="row">
                <div class="col-lg-8">
                    <?= form_open_multipart('admin/detailreq'); ?>
                    <div class="form-group row">
                        <label for="email" class="col-sm-2 col-form-label">Email</label>
                        <div class="col-sm-10">
                            <input type="text" class="form-control" id="email" name="email" value="<?= $user['email']; ?>" readonly>
                        </div>
                    </div>
                    <div class="form-group row">
                        <label for="namaFes" class="col-sm-2 col-form-label">Nama Festival</label>
                        <div class="col-sm-10">
                            <input type="text" class="form-control" id="email" name="email" value="<?= $postfes['namaFes']; ?>" readonly>
                        </div>
                    </div>
                    <div class="form-group row">
                        <label for="daerah" class="col-sm-2 col-form-label">Daerah Festival</label>
                        <div class="col-sm-10">
                            <input type="text" class="form-control" id="daerah" name="daerah" value="<?= $postfes['nm_daerah']; ?>" readonly>

                        </div>
                    </div>
                    <div class="form-group row">
                        <label for="tanggal" class="col-sm-2 col-form-label">Tanggal</label>
                        <div class="col-sm-10">
                            <input type="text" class="form-control" id="tanggal" name="tanggal" value="<?= $postfes['tanggal']; ?>" readonly>

                        </div>
                    </div>
                    <div class="form-group row">
                        <label for="tanggal2" class="col-sm-2 col-form-label">Tanggal</label>
                        <div class="col-sm-10">
                            <input type="text" class="form-control" id="tanggal2" name="tanggal2" value="<?= $postfes['tanggal2']; ?>" readonly>

                        </div>
                    </div>
                    <div class="form-group row">
                        <label for="is_active" class="col-sm-2 col-form-label">Status Post</label>
                        <div class="col-sm-10">
                            <input type="text" class="form-control" id="is_active" name="is_active" value="<?= $postfes['is_active']; ?>">

                        </div>
                    </div>

                    <div class="form-group row justify-content-end">
                        <div class="col-sm-10">
                            <button type="submit" class="btn btn-secondary">Edit</button>
                        </div>
                    </div>
                    </form>
                </div>
            </div>

        </div>
        <!-- /.container-fluid -->

        </div>
        <!-- End of Main Content -->

public function detailreq()
    {

        $data['user'] = $this->db->get_where('user', ['email' => $this->session->userdata('email')])->row_array();
        $data['title'] = 'Edit Post';

        $this->load->model('AdminModel', 'admin');
        $data['postfes'] = $this->admin->getDetailReq1();
        if ($this->form_validation->run() == false) {

            $this->load->view('templates/user-header', $data);
            $this->load->view('templates/user-sidebar', $data);
            $this->load->view('templates/user-topbar', $data);
            $this->load->view('admin/detailreq', $data);
            $this->load->view('templates/user-footer');
        } else {
            $active = $this->input->post('is_active');
            $email = $this->input->post('email');
            $id_p = $this->input->post('id_post');

            $this->db->set('is_active', $active);
            $this->db->where('email', $email);
            $this->db->where('id_post', $id_p);
            $this->db->update('postfes');
            $this->session->set_flashdata('message', '<div class="alert alert-success" role="alert">Congrats bout your new profile yo!</div>');
            redirect('user/mypost');

public function getDetailReq1()
    {
        $query = "SELECT `postfes`. * , `daerah`.`nm_daerah`
                    FROM `postfes` JOIN `daerah`
                    ON `postfes`.`daerah_id` = `daerah`.`id_daerah`
                    ";
        return $this->db->query($query)->row_array();
    }