我看到它在其他系统上运行。我无法理清。
同样的问题是last_name。此更新给出了问题。下面是它显示的错误，然后是整个代码。请帮忙。
严重性：注意
消息：未定义属性：mysqli :: $ first_name
文件名：views / main_view.php
行号：39
回溯：
文件：C：\ xampp \ htdocs \ test \ application \ views \ main_view.php行：39 功能：_error_handler
这是代码：
<!DOCTYPE html>
<html>
<head>
<title>View</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
</head>
<body>
<form method="post" action="<?php echo base_url("main/form_validation")?>">
<?php
if($this->uri->segment(2)=="inserted")
{
echo '<p> Data Inserted</p>';
}
?>
<?php
if(isset($user_data))
{
foreach ($user_data as $row)
{
?>
<div>
First Name:<input type="text" name="first_name" value="<?php echo $row->first_name; ?>"/>
<span class="text-danger"> <?php echo form_error("first_name"); ?></span> </br></br>
</div>
<div>
Last Name:<input type="text" name="last_name" value="<?php echo $row->last_name; ?>">
<span class="text-danger"> <?php echo form_error("last_name"); ?></span> </br></br>
</div>
<div>
<input type="hidden" name="hidden_id" value="<?php echo $row->id; ?>" >
<input type="submit" name="update" value="Update" >
</div>
<?php
}
}else{
?>
<div>
First Name:<input type="text" name="first_name">
<span class="text-danger"> <?php echo form_error("first_name"); ?></span> </br></br>
</div>
<div>
Last Name:<input type="text" name="last_name">
<span class="text-danger"> <?php echo form_error("last_name"); ?></span> </br></br>
</div>
<div>
<input type="submit" name="hidde" value="Insert" >
<input type="hidden" name="insert" value="Insert" >
</div>
<?php
}
?>
</form>
<br><br>
<div>
<table>
<tr>
<th>ID</th>
<th> First Name</th>
<th> Last Name </th>
<th> Delete </th>
<th> Update </th>
</tr>
<?php
if($fetch_data->num_rows()>0)
{
foreach ($fetch_data->result() as $row ) {
?>
<tr>
<td><?php echo $row->id; ?> </td>
<td><?php echo $row->first_name; ?> </td>
<td><?php echo $row->last_name; ?> </td>
<td> <a href="#" class="delete_data" id="<?php echo $row->id; ?>"> Delete </a></td>
<td> <a href=" <?php echo base_url(); ?>main/update_data/ <?php echo $row->id; ?>"> Edit </a></td>
</tr>
<?php
}
}else{
?>
<tr>
<th colspan="4">
No data Found
</th>
</tr>
<?php
}
?>
</table>
</div>
<script type="text/javascript">
$(document).ready(function(){
$('.delete_data').click(function(){
var id = $(this).attr("id");
if(confirm("Delete? or not?"))
{
window.location="<?php echo base_url(); ?>main/delete_data/"+id;
}else{
return false;
}
});
});
</script>
</body>
</html>
main_model.php
<?php
/**
*
*/
class Main_model extends CI_Model
{
function insert_data($data)
{
$this->db->insert("user",$data);
}
function fetch_data()
{
$query = $this->db->get("user");
return $query;
}
function delete_data($id){
$this->db->where("id", $id);
$this->db->delete("user");
}
function fetch_single_data($id)
{
$this->db->where("id", $id);
$query = $this->db->get("user");
return $query;
}
function update_data($data,$id)
{
$this->db->where("id", $id);
$this->db->update("user",$data);
}
}
?>
main.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Main extends CI_Controller {
/**
* Index Page for this controller.
*
* Maps to the following URL
* http://example.com/index.php/welcome
* - or -
* http://example.com/index.php/welcome/index
* - or -
* Since this controller is set as the default controller in
* config/routes.php, it's displayed at http://example.com/
*
* So any other public methods not prefixed with an underscore will
* map to /index.php/welcome/<method_name>
* https://codeigniter.com/user_guide/general/urls.html
*/
public function index()
{
$this->load->model("main_model");
$data["fetch_data"] = $this->main_model->fetch_data();
$this->load->view("main_view",$data);
}
public function form_validation()
{
$this->load->library('form_validation');
$this->form_validation->set_rules("first_name","First Name", 'required|alpha');
$this->form_validation->set_rules("last_name","Last Name", 'required|alpha');
if($this->form_validation->run()){
$this->load->model("main_model");
$data = array('first_name' => $this->input->post("first_name"),
'last_name' => $this->input->post("last_name") );
if ($this->input->post("update")) {
$this->main_model->update_data($data,$this->input->post("hidden_id"));
redirect(base_url()."main/updated");
}
if ($this->input->post("insert")) {
$this->main_model->insert_data($data);
redirect(base_url()."main/inserted");
}
}else{
$this->index();
}
}
public function inserted()
{
$this->index();
}
public function delete_data(){
$id= $this->uri->segment(3);
$this->load->model("main_model");
$this->main_model->delete_data($id);
redirect(base_url()."main/deleted");
}
public function deleted()
{
$this->index();
}
public function update_data()
{
$user_id = $this->uri-> segment(3);
$this->load->model("main_model");
$data["user_data"]= $this->main_model->fetch_single_data($user_id);
$data["fetch_data"] = $this->main_model->fetch_data();
$this->load->view("main_view",$data);
}
public function updated()
{
$this->index();
}
}
?>
答案 0 :(得分：0)
模特试试：
function fetch_single_data($id)
{
$this->db->where("id", $id);
$query = $this->db->get("user")->result();
return $query;
}