Codeigniter：似乎无法让我的编辑工作

Question

所以基本上我试图结合我在这两个教程中找到的内容来制作一个有效的 CRUD： http://fwebde.com/php/simple-crud-with-codeigniter/

http://ie.mirror.twsweb-int.com/codeigniter/user_guide/tutorial/create_news_items.html

基本上，我所在的位置是我可以获取编辑页面来呈现适当的内容表单中的项目详细信息，但每当我按下提交时，我都会收到 404 错误，并且表格不会更新。

我的 edit.php 与我的新闻控制器绑定：

<?php echo validation_errors(); ?>
<h2>Edit a news item</h2>

<?php echo form_open('news/edit') ?>

<p>
<label for="title">Title</label> 
<?php echo form_input('title',$news_item['title']); ?>
</p>

<p>
<label for="text">Text</label>
<?php echo form_textarea('text',$news_item['text']); ?>
</p>    

<?php echo form_hidden($news_item['id']); ?>

<p>
<?php echo form_submit('submit', 'Save Changes'); ?>
</p>

  <?php echo form_close(); ?>

</br>
</br>
<a href='<?php echo site_url('news');?>'>Back</a>

我的编辑方法上的新闻控制器：

public function edit($slug)
{
    $data['news_item'] = $this->news_model->get_news($slug);

    if (empty($data['news_item']))
    {
        show_404();
    }

    $data['title'] = 'Edit: '.$data['news_item']['title'];

    $this->load->helper('form');
    $this->load->library('form_validation');

    $this->form_validation->set_rules('title', 'Title', 'required');
    $this->form_validation->set_rules('text', 'text', 'required');

    if($this->form_validation->run() === FALSE)
    {
        $this->load->view('templates/header', $data);   
        $this->load->view('news/edit', $data);
        $this->load->view('templates/footer');
    }
    else
    {
        $this->news_model->update_news( $this->input->post('id'),
                                        $this->input->post('title'),
                                        $this->input->post('text'));
        $this->load->view('news/success');
    }
}

我的模型中的适当方法：

public function get_news($slug = FALSE)
{
    if ($slug === FALSE)
    {
        $query = $this->db->get('news');
        return $query->result_array();
    }

    $query = $this->db->get_where('news', array('slug' => $slug));
    return $query->row_array();
}

public function set_news()
{
    $this->load->helper('url');

    $slug = url_title($this->input->post('title'), 'dash', TRUE);

    $data = array(
        'title' => $this->input->post('title'),
        'slug' => $slug,
        'text' => $this->input->post('text')
    );

    return $this->db->insert('news', $data);
}

public function update_news($id, $title, $content) {
    $data = array(
        'title' => $title,
        'content' => $content
    );

    $this->db->where('id', $id);
    $this->db->update('news', $data);
}

我的路线：

$route['news/edit/(:any)'] = 'news/edit/$1';
$route['news/create'] = 'news/create';
$route['news/(:any)'] = 'news/view/$1';
$route['news'] = 'news';

Answer 1

您正在将表单提交到 edit 方法，该方法需要一个项目 ID $slug，您可以将视图更改为以下内容：

<?php echo form_open('news/edit/' . $news_item['id']) ?>

Answer 2

基本上有几个错误：

1）ifaour的建议

2）将主键和slug作为参数传递以供稍后使用

3）忘记我已经更改了表列（忘记我已将内容列重命名为文本）

模型中最终形式：

public function get_news($slug = FALSE)
{
    if ($slug === FALSE)
    {
        $query = $this->db->get('news');
        return $query->result_array();
    }

    $query = $this->db->get_where('news', array('slug' => $slug));
    return $query->row_array();
}

public function set_news()
{
    $this->load->helper('url');

    $slug = url_title($this->input->post('title'), 'dash', TRUE);

    $data = array(
        'title' => $this->input->post('title'),
        'slug' => $slug,
        'text' => $this->input->post('text')
    );

    return $this->db->insert('news', $data);
}

public function update_news($id, $title, $content) {
    $data = array(
        'title' => $title,
        'text' => $content
    );

    $this->db->where('id', $id);
    $this->db->update('news', $data);
}

以最终形式编辑：

<h2>Edit a news item</h2>

<a href="<?php echo site_url('news/delete/'.$news_item['id']); ?>">Delete this article</a> 

<?php echo validation_errors(); ?>

<?php echo form_open('news/edit/'.$news_item['slug']) ?>

<p>
<label for="title">Title</label> 
<?php echo form_input('title',$news_item['title']); ?>
</p>

<p>
<label for="text">Text</label>
<?php echo form_textarea('text',$news_item['text']); ?>
</p>    

<?php echo form_hidden('slug',$news_item['slug']); ?>
<?php echo form_hidden('id',$news_item['id']); ?>

<p>
<?php echo form_submit('submit', 'Save Changes'); ?>
</p>

<?php echo form_close(); ?>

</br>
</br>
<a href='<?php echo site_url('news');?>'>Back</a>

最终形式的新闻控制器编辑方法：

public function edit($slug)
{
    $data['news_item'] = $this->news_model->get_news($slug);

    if (empty($data['news_item']))
    {
        show_404();
    }

    $data['title'] = 'Edit: '.$data['news_item']['title'];

    $this->load->helper('form');
    $this->load->library('form_validation');

    $this->form_validation->set_rules('title', 'Title', 'required');
    $this->form_validation->set_rules('text', 'text', 'required');

    if($this->form_validation->run() === FALSE)
    {
        $this->load->view('templates/header', $data);   
        $this->load->view('news/edit', $data);
        $this->load->view('templates/footer');
    }
    else
    {
        $this->news_model->update_news( $this->input->post('id'),
                                        $this->input->post('title'),
                                        $this->input->post('text'));


        $data['news_item'] = $this->news_model->get_news($slug);
        $this->load->view('templates/header', $data);                                   
        $this->load->view('news/success');
        $this->load->view('news/edit', $data);
        $this->load->view('templates/header', $data);   
    }
}