php - codeigniter 3 错误未定义的属性

Question

错误代码

遇到 PHP 错误

Severity: Notice

Message: Undefined property: CI_Loader::$yamaha_model

Filename: controllers/Yamaha.php

Line Number: 12

Backtrace:

File: /home/billionp/domains/billionproonline.com/public_html/bpp_8/application/controllers/Yamaha.php Line: 12 Function: _error_handler

File: /home/billionp/domains/billionproonline.com/public_html/bpp_8/index.php Line: 295 Function: require_once

Fatal error: Call to a member function product() on a non-object in /home/billionp/domains/billionproonline.com/public_html/bpp_8/application/controllers/Yamaha.php on line 12

遇到 PHP 错误

Severity: Error

Message: Call to a member function product() on a non-object

Filename: controllers/Yamaha.php

Line Number: 12

Backtrace:

Controller

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Yamaha extends CI_Controller {

    public function index(){        
    $template = array(
               'title' => 'YAMAHA',
               'heading' => 'My Heading',
               'message' => 'My Message'
          );
        $contents['row'] = $this->load->yamaha_model->product();    
        // $contents['row']          = $this->yamaha_model->product();
        $contents['cart_session'] = $this->session->userdata('cart_session');

        $template['content']      = $this->load->view('yamaha',$contents,TRUE);
        $this->load->view('template',$template);

    }

}

型号:

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Yamaha_model extends CI_Model {

    function __construct() {
        parent::__construct();
    }   

    function product(){
        return $i = $this->db->select('*')->from('yamaha')->get()->result();
    }

    function product_detail($id){
        return $i = $this->db->select('*')->from('yamaha')->where('product_id',$id)->get()->row();
    }
}

Answer 1

有趣的用法，但看起来您不能链式加载模型然后调用方法。它需要显式加载。

所以改变

$contents['row'] = $this->load->yamaha_model->product();

为此

$this->load->model('yamaha_model');
$contents['row'] = $this->yamaha_model->product();