当我刷新页面时,它会自动向数据库Codeigniter输入值


When i refresh my page it automactically input values to the database Codeigniter

我已经使用codeigniter创建了一个from。当用户第一次访问表单页面时,用户提交值,然后将值存储到数据库中,用户将再次被引导到表单页面。现在的问题是,如果用户在第一次提交表单后刷新页面,最后插入的值会在用户刷新页面时一次又一次地自动添加到数据库中,如何停止这种情况???

这是我的视图代码。。。

        <?php echo form_open("site/upload_data"); ?>
            <div id="container" style="float:left; width:561px; height:50px">
                <div id="name" style="float:left; width:150px;">
                    Movie Name:
                </div>
                <div id="field" style="float:left; width:411px;">
                    <input type="text" name="movie_name" />
                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:50px">
                <div id="name" style="float:left; width:150px;">
                    Release Date:
                </div>
                <div id="field" style="float:left; width:411px;">
                    <input type="text" name="date" />
                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:160px">
                <div id="name" style="float:left; width:150px;">
                    Genres:
                </div>
                <div id="field" style="float:left; width:411px;">
                    <input type="checkbox" name="genres" value="Action">Action&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Adventure">Adventure&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Animation">Animation&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Biography">Biography<br />
                    <input type="checkbox" name="genres" value="Comedy">Comedy&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Crime">Crime&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Documentary">Documentary&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Drama">Drama<br />
                    <input type="checkbox" name="genres" value="Family">Family&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Fantasy">Fantasy&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Film-Noir">Film-Noir&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Game-Show">Game-Show<br />
                    <input type="checkbox" name="genres" value="History">History&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Horror">Horror &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Music">Music&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Musical">Musical<br />

                    <input type="checkbox" name="genres" value="Mystery">Mystery&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="News">News&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Reality-TV">Reality-TV&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                     <input type="checkbox" name="genres" value="Romance">Romance<br />

                    <input type="checkbox" name="genres" value="Sci-Fi">Sci-Fi&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Sport">Sport&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Talk-Show">Talk-Show&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Thriller">Thriller<br />
                    <input type="checkbox" name="genres" value="War">War&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="checkbox" name="genres" value="Western">Western

                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:50px">
                <div id="name" style="float:left; width:150px;">
                    Rating:
                </div>
                <div id="field" style="float:left; width:411px;">
<input id="ttcontact" type="radio" checked="checked" value="G" name="rating">
G
<input id="ttcontact" type="radio" value="PG" name="rating">
PG
<input id="ttcontact" type="radio" value="PG-13" name="rating">
PG-13
<input id="ttcontact" type="radio" value="R" name="rating">
R
<input id="ttcontact" type="radio" value="NC-17" name="rating">
NC-17
                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:50px">
                <div id="name" style="float:left; width:150px;">
                    Stars:
                </div>
                <div id="field" style="float:left; width:411px;">
                    <input type="text" name="star" placeholder="Eg: Max, John" />
                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:50px">
                <div id="name" style="float:left; width:150px;">
                    Director:
                </div>
                <div id="field" style="float:left; width:411px;">
                    <input type="text" name="director" />
                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:50px">
                <div id="name" style="float:left; width:150px;">
                    Writers:
                </div>
                <div id="field" style="float:left; width:411px;">
                    <input type="text" name="writers" />
                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:50px">
                <div id="name" style="float:left; width:150px;">
                    Movie Path:
                </div>
                <div id="field" style="float:left; width:411px;">
                    <input type="text" name="path" />
                </div>
            </div>

            <div id="container" style="float:left; width:561px; height:50px; text-align:center">
                <div id="btn" style="float:left;margin-left: 375px; margin-top: 25px;">                
                    <input type="submit" value="Submit" />
               </div>
            </div>  
        <?php echo form_close(); ?>
    </div>

这是我的控制器代码。。。

public function upload_data()
{
$this->load->library('form_validation');
    // field name, error message, validation rules
    $this->form_validation->set_rules('movie_name', 'Movie Name', 'trim|required|min_length[4]|xss_clean');
    $this->form_validation->set_rules('date', 'date', 'trim|required|min_length[4]|xss_clean');
    $this->form_validation->set_rules('genres', 'genres', 'trim|required|min_length[4]|xss_clean');

    $this->form_validation->set_rules('star', 'star', 'trim|required|min_length[4]|xss_clean');
    $this->form_validation->set_rules('director', 'director', 'trim|required|min_length[4]|xss_clean');
    $this->form_validation->set_rules('writers', 'writers', 'trim|required|min_length[4]|xss_clean');
    $this->form_validation->set_rules('path', 'path', 'trim|required|min_length[4]|xss_clean');

    if($this->form_validation->run() == FALSE)
    {
        $this->admin();
    }
    else
    {
        $result = $this->site_upload->add_data();
        if ($result)
        {
            $this->load->view('admin');
        }   
    }
}

这是我的型号代码。。。

public function add_data()
    {
        $values = array (
            'movie_name' => $this->input->post('movie_name'),
            'date' => $this->input->post('date'),
            'genres' => $this->input->post('genres'),
            'rating' => $this->input->post('rating'),
            'star' => $this->input->post('star'),
            'director' => $this->input->post('director'),
            'writers' => $this->input->post('writers'),
            'path' => $this->input->post('path')
        );
        $rows = $this->db->insert('data',$values);
        return $rows;   
    }
if($this->form_validation->run() == FALSE)
{
    $this->admin();
}
else
{
    $result = $this->site_upload->add_data();
    if ($result)
    {
         redirect('/path/you/want/to/redirect'); //do the redirection
    }   
}

redirect()将达到目的。

您可以在成功插入后重定向页面,以防止重复插入。

header("Location: your_submit_page.php?fresh");

您也可以用给定的ID替换一个简单按钮的提交输入,然后使用(例如)jQuery来侦听该按钮的"onclick"事件,然后执行POST请求,而不是像现在这样使用浏览器。

我发现这种方式更优雅,因为它允许您显示错误消息,而不会让您重新开始表单填写过程,这有时很乏味。当然,由于当前页面中没有帖子标题,您可以根据需要多次重新加载,而无需实际随意发布。

您可能想向我们展示"表单打开"函数是如何解析的,主要是为了知道POST到哪里。