controller_nya

public function do_upload(){
        $config['upload_path'] = './assets/user/img/upload/'; //lokasi folder yang akan digunakan untuk menyimpan file
        $config['allowed_types'] = 'gif|jpg|png|JPEG'; //extension yang diperbolehkan untuk diupload
        $config['file_name'] = url_title($this->input->post('file_upload'));

        $this->upload->initialize($config); //meng set config yang sudah di atur
        //$now = date('Y-m-d h:i:s');
        //$id = $this->session->userdata('id');
        if(!$this->upload->do_upload('file_upload')){
            echo $this->upload->display_errors();
        }else{
        $data = array(
            'logo'=>$this->upload->file_name
            //'tanggal_update'=>$now,
            //'id'=>$id
        );
        $this->crud->insert($data,'home');
        redirect('admin/home');
        }
    }