未设置编码器值

我的代码有一个问题，那就是在提交user_support_documentaries的选定值时没有提交给数组

我可以在页面提交之前查看HTML源，它显示了已填充的值标记-我不明白为什么所选项目没有被放入数组中。

<label>
    <input type="radio" id="user_dafapp_1" name="user_dafapp" value="1" class="checkbox" <?php echo selected_checkbox(set_value('user_dafapp',$grant['user_dafapp']) == 1) ?> /> <br />
</label>
     <div id="user_support_documentaries_container" style="display: none;">
    <?php echo form_dropdown('user_support_documentaries', $film_list, set_value('user_support_documentaries',$grant['user_support_documentaries']), 'id="user_support_documentaries"'); ?>
</div>

JS:

// checkout form enhancement
    if ($("#user_dafapp_1").is(":checked")) // If checked
    {
        $("#user_support_documentaries_container").show("fast"); //show the hidden div
    }
    else
    {
        $("#user_support_documentaries_container").hide("fast"); //otherwise, hide it
    }
    $("input[name*='user_dafapp']").click(function ()
    {
        if ($("#user_dafapp_1").is(":checked"))
        {
            $("#user_support_documentaries_container").show("fast");
        }
        else
        {
            $("#user_support_documentaries_container").hide("fast");
        }
    });

控制器:

function op($action = NULL, $grant_id = NULL)
    {
        if ($this->session->userdata('user_role') != 'grantmaker')
        {
            redirect('grants');
        }
        $user_id = $this->session->userdata('user_id');
        $results = $this->users_model->get_user_by_id($user_id);
        $this->data['user'] = $results->row_array();
        switch ($action) {
            case "edit" :
                $results = $this->grant_model->get($grant_id, $user_id);
                if ($results->num_rows() == 0)
                {
                    $this->session->set_flashdata('flash', 'Grant not found', 'error');
                    redirect('user/my_grants');
                }
                $grant = $results->row_array();
                $this->data['submit_text'] = 'Save changes';
                $page_title = 'Edit a grant';
            break;
            case "add" :
                $grant = array(
                                'user_budget'                   => '',
                                'user_dafapp'                   => '',
                                'user_support_documentaries'    => '',
                                'related_filmmakers'            => '',
                                'user_related_filmmakers'       => '',
                                'user_anoymous'                 => '',
                            );
                $this->data['submit_text'] = 'Submit';
                $page_title = 'Make a Grant application form';
            break;
            default :
                $this->session->set_flashdata('flash', 'grant not found', 'error');
                redirect('user/my_grants');
            break;
        }
        $this->data['action'] = $action;
        $this->form_validation->set_rules('user_budget','Budget','required|numeric|trim|xss_clean'); //Amount
        $this->form_validation->set_rules('user_dafapp','Support','trim|xss_clean'); //Support
        $this->form_validation->set_rules('user_support_documentaries','Support documentaries','trim|xss_clean'); //FILMS
        $this->form_validation->set_error_delimiters('<span class="error">', '</span>');
        if ($this->form_validation->run() == FALSE)
        {   
            $this->data['grant'] = $grant;
            $this->data['grant_id'] = $grant_id;
            $this->data['film_list'] = $this->film_model->get_select_options2();
            build_page('user/my_grants/grant/op/add_edit_form', $this->data, $page_title, 'User');
        }
        else
        {
            $grant_data['user_budget']                  = set_value('user_budget'); //Amount
            $grant_data['user_dafapp']                  = set_value('user_dafapp'); //Support
            $grant_data['user_support_documentaries']   = ((set_value('user_dafapp') == 1) ? set_value('user_support_documentaries') : ''); //This Line 

            switch($action) 
            {
                case('edit'):
                    $grant_data['grant_modified'] = date('Y-m-d H:i:s');
                    if ($this->grant_model->save($grant_data, 'edit', $grant_id) == TRUE)
                    {
                        $this->session->set_flashdata('flash', 'Grant updated', 'success');
                    }
                break;
                case('add'):
                    $grant_data['grant_created']    = date('Y-m-d H:i:s');
                    $grant_data['user_id']  = $user_id;
                    $grant_data['grant_active'] = 0;
                    if ($this->grant_model->save($grant_data, 'add', $grant_id) == FALSE) 
                    {
                        log_message('error', "Failed to add grant {$grant_id} via the admin section");
                        $this->session->set_flashdata('flash', 'Failed to add grant - '.set_value('grant_name'), 'error');
                    }
                    else
                    {
                        $responder_array = array(
                            '%user_budget'                  => set_value('user_budget'),
                            '%user_dafapp'                  => ((set_value('user_dafapp') == 1) ? 'Support one or more documentaries on Name Approved List of films' : 'Support the general operations of Name'),
                            '%user_support_documentaries'   => ((set_value('user_dafapp') == 1) ? set_value('user_support_documentaries') : '')
                            );
                        /*
                                                $responder_array = array(
                            '%user_budget'                  => set_value('user_budget'),
                            '%user_dafapp'                  => ((set_value('user_dafapp') == 2) ? 'Support one or more documentaries on Name Approved List of films' : 'Support the general operations of Name'),
                            '%user_support_documentaries'   => ((set_value('user_dafapp') == 2) ? set_value('user_support_documentaries') : ''),
                            '%user_related_filmmakers'      => ((set_value('related_filmmakers')) ? set_value('user_related_filmmakers') : ''),
                            '%user_anoymous'                => ((set_value('user_anoymous')) ? 'Yes' : 'No'),
                            );
                            */
                        @$this->autoresponder->send('add_grant', $this->session->userdata('user_email'), $this->session->userdata('user_first_name') . " ". $this->session->userdata('user_surname'), $responder_array);
                        @$this->autoresponder->send('add_grant', NOTIFICATION_EMAIL, NULL, $responder_array);
                        $this->session->set_flashdata('flash', 'Your grant submission was successful', 'success');
                    }
                break;
            }
            redirect("user/my_grants");         
        }
    }