我正在尝试使用模型中的以下查询来查询数据库:
function showSpecific(){
$all = $this->session->all_userdata();
$name = $all['u_name'];
$id = $this->db
->select('u_id')
->from('users')
->where('u_name', $name)
->get()
->row();
$id = $id->u_id;
$data = $this->db->query("SELECT messages.m_id, messages.post_id, messages.m_betreff, messages.an_user, messages.von_user, messages.m_time, users.u_id, users.u_name, posts.p_titel, users.u_id, messages.m_content
FROM messages
INNER JOIN users
ON messages.von_user=users.u_id
INNER JOIN posts
ON messages.post_id=posts.post_id
WHERE messages.an_user='$id'
ORDER BY messages.m_time DESC");
return $data;
}
但是当我尝试在视图中输出结果时:
<?php foreach ($query->result() as $row)
{
echo '<tr><td>';
echo anchor('users/showUser/'.$row->u_id, $row->u_name);
echo '</td><td>';
echo $row->m_betreff;
echo '</td><td>';
echo $row->m_content;
echo '</td><td>';
echo anchor('posts/showSpecific/'.$row->post_id, $row->p_titel);
echo '</td><td>';
echo $row->m_time;
echo '</td></tr>';
}
?>
只有m_content会出现此错误:为什么它是唯一的错误?我该如何解决这个问题?
A PHP Error was encountered
Severity: Notice
Message: Undefined property: stdClass::$m_content
Filename: views/specific_message.php
Line Number: 48
这是我的控制器:
function showSpecific(){
$this->load->model('messages_model');
$data['query'] = $this->messages_model->getMessages();
$data['main_content'] = 'specific_message';
$this->load->view('includes/login_template', $data);
}
非常感谢!
答案 0 :(得分:6)
我认为
$data['query'] = $this->db->query("...");
应该是
$query=$this->db->query("...");
所以你可以
foreach ($query->result() as $row) {...}
参考: codeigniter
问题更新后:由于$ data ['query']($ data将被提取),您的视图中有$ query变量,$ query现在是您的对象(在您的视图中)所以你可以循环$查询。
已调用错误的型号名称 getMessages(),它应该是 showSpecific()