Question

以下是我的CodeIgniter提供的代码和错误。我的错误是致命错误：在第15行的C：\ wamp \ www \ CodeIgniter \ application \ models \ news_model.php中的非对象上调用成员函数result_array（）我找到了解决方法，但后来我的index.php文件行1中的foreach语句出错了任何人都知道错误可能在哪里？

news_model.php（模特）

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class News_model extends CI_Model
{

public function __construct()
{
    $this->load->database();
}

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 delete_news($id) 
{
    $this->db->delete('news', array('id' => $id));
}
}

news.php（控制器）

<?php
class News extends CI_Controller {

public function __construct()
{
    parent::__construct();
    $this->load->model('news_model');
}

public function index()
{
    $data['news'] = $this->news_model->get_news();
    $data['title'] = 'News archive';

    $this->load->view('templates/header', $data);
    $this->load->view('news/index', $data);
    $this->load->view('templates/footer');
}

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

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

    $data['title'] = $data['news_item']['title'];

    $this->load->view('templates/header', $data);
    $this->load->view('news/view', $data);
    $this->load->view('templates/footer');
}

public function create()
{
    $this->load->helper('form');
    $this->load->library('form_validation');

    $data['title'] = 'Create a news item';

    $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/create');
        $this->load->view('templates/footer');

    }
    else
    {
        $this->news_model->set_news();
        $this->load->view('news/success');
    }
}
}

index.php（查看）

<?php foreach ($news as $news_item): ?>

<h2><?php echo $news_item['title'] ?></h2>
<div id="main">
    <?php echo $news_item['text'] ?>
</div>
<p><a href="news/<?php echo $news_item['slug'] ?>">View article</a></p>

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

<?php endforeach ?>

Answer 1

尝试返回$ query-＆gt; result（）而不是$ query-＆gt; result_array（）并检查它是否正常工作。
此外，您还需要在显示结果时更改foreach循环。

Answer 2

在你看来你循环，$ news变量为 result_array ，

但在您的模型中：函数get_news（$ slug = FALSE），

如果 $ slug！== FALSE 您的退货 row_array

我建议您返回 result_array（），这样您的观看代码就不会混淆。

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

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

CodeIgniter错误，result_array和foreach错误

2 个答案: