大家好我有这个代码而且我不确定我做错了什么,据我所知,数据正在被定义,这些是我得到的错误:
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: data
Filename: models/site_model.php
Line Number: 14
A PHP Error was encountered
Severity: Warning
Message: Cannot modify header information - headers already sent by (output started at /Applications/XAMPP/xamppfiles/htdocs/BLOCK/system/core/Exceptions.php:185)
Filename: core/Common.php
Line Number: 442
A Database Error Occurred
You must use the "set" method to update an entry.
Filename: /Applications/XAMPP/xamppfiles/htdocs/BLOCK/models/site_model.php
Line Number: 14
控制器:
<?php
class Site extends CI_Controller {
function index(){
$this->load->view('option_view');
}
function create(){
$data = array(
'subject' => $this->input->post('subject'),
'body' => $this->input->post('body')
);
$this->Site_model->add_record($data);
$this->index();
}
}
?>
模型:
<?php
class Site_model extends CI_Model {
function get_records()
{
$query = $this->db->get('items');
return $query->result();
}
function add_record()
{
$this->db->insert('items', $data);
$return;
}
function update_record()
{
$this->db->where('id', 1);
$this->db->update('items', $data);
}
function delete_record()
{
$this->db->where('id', $this->url->segment(3));
$this->db->delete('items');
}
}
?>
和视图:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>option_view</title>
<style type="text/css" media="screen">
label {display:block;}
</style>
</head>
<body>
<h2>Create</h2>
<?php echo form_open('site/create'); ?>
<p>
</label for="subject">Subject</label>
<input type="text" name="subject" id="subject">
</p>
<p>
</label for="body">Body</label>
<input type="text" name="body" id="body">
</p>
<p>
<input type="submit" value="Submit">
</p>
<?php echo form_close();?>
</body>
</html>
你们觉得怎么样?
非常感谢
答案 0 :(得分:3)
您永远不会将$data
传递给您的方法。这是一个范围问题。
function add_record()
{
$this->db->insert('items', $data);
$return;
}
在这种情况下,add_record()
不知道$data
是什么(并将其视为null
,因为它尚未定义。
答案 1 :(得分:2)
模型中的方法不期望参数。例如:
变化:
function add_record()
为:
function add_record($data)
答案 2 :(得分:0)
在这些方法中:
function add_record()
{
$this->db->insert('items', $data);
$return;
}
function update_record()
{
$this->db->where('id', 1);
$this->db->update('items', $data);
}
您尚未将数据传递给方法,因此$ data未定义。