Codeigniter:我的编辑似乎无法工作 - Codeigniter: Can't seem to get my edit to work

所以基本上我试图结合我在这两个教程中发现的东西来制作一个工作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，我所处的位置是，我可以让编辑页面在表单中呈现适当的项目详细信息，但是每当我按下提交时，我都会得到404错误，并且表没有得到更新。

与新闻控制器绑定的edit.php:

<?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>

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');
    }
}

我的模型中合适的方法:

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';

您正在向edit方法提交表单，该方法期望项目id为$slug，您可以将视图更改为以下内容:

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

基本上有两个错误:

1) ifaour的建议

2)传递主键和段塞作为参数，以供以后使用

3)忘记我已经更改了表列(忘记我已经将内容列重命名为text)

模型的最终形式:

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);
}

编辑成最终格式:

<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);   
    }
}