在第 37 行的 D:wampwww egistrationapplicationcontrolle - Call to undefined method CI_DB_mysqli_driver::insert_item() in D:wampwww egistrationapplicationcontrollerspages.php on line 37

我是CI的新手，我刚刚开始编码。我正在制作一个简单的联系表格，但得到了这个错误。

Call to undefined method CI_DB_mysqli_driver::insert_item() in 
D:'wamp'www'registration'application'controllers'pages.php on line 37

这是我的控制器的代码.php

<?php class Pages extends CI_Controller { public function view($page = 'home'){
if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php'))
{
    // Whoops, we don't have a page for that!
    show_404();
}
$data['title'] = ucfirst($page); // Capitalize the first letter
$this->load->model('user_model');
//$this->load->view('templates/header', $data);
$this->load->view('pages/'.$page, $data);
//$this->load->view('templates/footer', $data);} public function data_submitted(){
$name = $this->input->get('name');
$email = $this->input->get('email');
$mobile = $this->input->get('mobile');
$address = $this->input->get('address');
$gender = $this->input->get('gender');
$data1 = array(
    'name'=> $name,
    'email'=>$email,
    'mobile'=>$mobile,
    'address'=>$address,
    'gender'=>$gender
);
//$this->db->set($data1);
$this->user_model->insert($data1); } } ?>

这是我模型的完整代码

<?php class User_model extends CI_Model { private $item; function __construct(){
/* Call the Model constructor */
parent::__construct(); }
function insert_item($item){
/*$this->table = "contact";
$this->item = $item;
*/
//$dbconnect = $this->load->database();
$this->db->insert("contact", $item);} }

控制器引用db库：

$this->db->insert_item($data1);

但是，insert_item()方法仅存在于您的模型中！

它应该看起来像这样：

    $this->load->model('my_model');
    $this->my_model->insert_item($data1);

在此处编辑以考虑您的控制器代码。

假设user_model已加载，并且user_model包含要更改的方法insert_item()

$this->user_model->insert($data1);

自

$this->user_model->insert_item($data1);

看过完整的控制器和型号代码...

您的控制器：

您正在view()方法中加载用户模型，但从我所看到的情况来看，您实际上并没有使用它。但是，您在data_submitted()中使用了该模型，但它从未加载到那里。您还使用了insert而不是insert_item()。下面是控制器的更正代码。

public function view($page = 'home') {
    if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php'))
    {
        // Whoops, we don't have a page for that!
        show_404();
    }
    $data['title'] = ucfirst($page); // Capitalize the first letter
    //$this->load->view('templates/header', $data);
    $this->load->view('pages/'.$page, $data);
    //$this->load->view('templates/footer', $data);
}
public function data_submitted(){
    $name = $this->input->get('name');
    $email = $this->input->get('email');
    $mobile = $this->input->get('mobile');
    $address = $this->input->get('address');
    $gender = $this->input->get('gender');
    $data1 = array(
        'name'=> $name,
        'email'=>$email,
        'mobile'=>$mobile,
        'address'=>$address,
        'gender'=>$gender
    );
    $this->load->model('user_model');
    $this->user_model->insert_item($data1);
}

您的型号：

似乎有一些代码完全没有做任何事情。我已经将其删除，以下代码应该可以工作。

class User_model extends CI_Model {
    function __construct(){
        /* Call the Model constructor */
        parent::__construct();
    }

    public function insert_item($item){
        $this->db->insert("contact", $item);
    }
}

作为旁注 - 您能看到代码现在阅读起来有多容易吗？确保使用正确的缩进，因为它可以大大提高代码的可读性。

您已使用

$this->db->insert_item($data1);

但insert_item是一个模型函数。

加载模型，

然后通过模型调用，如下所示：

$this->load->model('Blog');
$this->Blog->get_last_ten_entries();

您需要

确保正确调用模型>函数。命名约定在 2 之间关闭(它们必须在模型中出现时调用(data_submitted(( 中的最后一次调用应为：$this->user_model->insert_item($data 1(;如下

控制器：

<?php class Pages extends CI_Controller
{
public function __construct()
{
    parent::__construct();
    $this->load->model('user_model');
}
public function view($page = 'home')
{
    if (!file_exists(APPPATH . '/views/pages/' . $page . '.php')) {
        // Whoops, we don't have a page for that!
        show_404();
    }
    $data['title'] = ucfirst($page); // Capitalize the first letter
    //$this->load->view('templates/header', $data);
    $this->load->view('pages/' . $page, $data);
    //$this->load->view('templates/footer', $data);
}
public function data_submitted()
{
    $name = $this->input->get('name');
    $email = $this->input->get('email');
    $mobile = $this->input->get('mobile');
    $address = $this->input->get('address');
    $gender = $this->input->get('gender');
    $data1 = array(
        'name' => $name,
        'email' => $email,
        'mobile' => $mobile,
        'address' => $address,
        'gender' => $gender
    );
    //$this->db->set($data1);
    $this->user_model->insert_item($data1);
}
} ?>

型：

<?php class User_model extends CI_Model
{
function __construct()
{
    /* Call the Model constructor */
    parent::__construct();
    $this->load->database();
}
private $item;
function insert_item($item)
{
    /*$this->table = "contact";
    $this->item = $item;
    */
    //$dbconnect = $this->load->database();
    $this->db->insert("contact", $item);
}
}