Codeigniter引导程序模式始终激活

Question

我想一直打开我的模态，直到在使用控制器插入数据时按下模态的“关闭窗口”按钮。我的控制器方向如下。

if ($this->form_validation->run() && $this->documents_model->save($data, $id, $sub_data)) {
            if ($id)
                $message = 'File/ Document Details have been Updated successfully..!!';
            else
                $message = 'File/ Document details have been saved successfully..!!';
            $this->session->set_flashdata('message', $message);
            redirect('documents');
        } else {
            redirect('documents');
        }

并按如下所示将JavaScript添加到我的模型中

$.ajax({
    type: 'POST',
    url: "documents",
    success: function(response){
        if(response == "Success"){
            $('#modal').modal('show');
        }else{
            alert("File/ Document Details have been Updated successfully..!!");
        }
    },
    error: function(){ 
        alert("Something just went wrong, Please try again later...");
    }
});

但仅工作警报。可能出什么问题了？谁能帮我吗？