[英]Fatal error: Call to undefined method stdClass::result_array() CodeIgniter
[英]CodeIgniter error, result_array and foreach error
以下是CodeIgniter随附的我的代码和错误。 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()时,我找到了解决方法,但随后得到了错误,我的index.php文件第1行中的foreach语句出了点问题任何人都不知道错误可能在哪里?
news_model.php(模型)
<?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 $news_item['id'] ?>">Delete article</a>
<?php endforeach ?>
尝试返回$ query-> result()而不是$ query-> result_array()并检查其是否有效。
同样,您需要在显示结果时更改foreach循环。
在您的视图中,循环$ news变量作为result_array ,
但在您的模型中,该函数是: function get_news($ slug = FALSE) ,
如果$ slug!== 伪造您的返回row_array
我建议您返回result_array() ,这样您的视图代码就不会造成混淆。
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()
}
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