Php 在null上调用成员函数get（）

我在Codeigniter中收到以下错误：

严重性：通知 消息：未定义的属性：Loans:：$loan\u m

文件名：administrator/loans.php 电话号码：11

get（）函数可以很好地处理页面和用户，但它会抛出错误，并与贷款控制器一起出错。我还不知道为什么

class Loans extends Admin_Controller{
    public function __construct() {
        parent::__construct();
    }

    public function index(){
        // Fetch all loans
        $this->data['loans'] = $this->loan_m->get();

        $this->data['page_title'] = 'Loans';
        $this->data['subview'] = 'administrator/loans/index';
        $this->load->view( 'administrator/body', $this->data );
    }
}

回溯：

文件：C:\Ampps\www\ncb.dev\public\u html\application\controllers\administrator\loans.php

class Loans extends Admin_Controller{
    public function __construct() {
        parent::__construct();
    }

    public function index(){
        // Fetch all loans
        $this->data['loans'] = $this->loan_m->get();

        $this->data['page_title'] = 'Loans';
        $this->data['subview'] = 'administrator/loans/index';
        $this->load->view( 'administrator/body', $this->data );
    }
}

第11行 函数：\u错误\u处理程序

文件：C:\Ampps\www\ncb.dev\public\u html\index.php 电话号码：315 功能：需要一次

我的模型

<?php
class MY_Model extends CI_Model {

    protected $_table_name = '';
    protected $_primary_key = 'id';
    protected $_primary_filter = 'intval';
    protected $_order_by = '';
    public $rules = array();
    protected $_timestamps = FALSE;

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

    public function array_from_post($fields){
        $data = array();
        foreach ($fields as $field) {
            $data[$field] = $this->input->post($field);
        }
        return $data;
    }

    public function get($id = NULL, $single = FALSE){

        if ($id != NULL) {
            $filter = $this->_primary_filter;
            $id = $filter($id);
            $this->db->where($this->_primary_key, $id);
            $method = 'row';
        }
        elseif($single == TRUE) {
            $method = 'row';
        }
        else {
            $method = 'result';
        }

        $this->db->order_by($this->_order_by);
        return $this->db->get($this->_table_name)->$method();
    }

    public function get_by($where, $single = FALSE){
            $this->db->where($where);
            return $this->get(NULL, $single);
    }

    public function save($data, $id = NULL){

        // Set timestamps
        if ($this->_timestamps == TRUE) {
            $now = date('Y-m-d H:i:s');
            $id || $data['created'] = $now;
            $data['modified'] = $now;
        }

        // Insert
        if ($id === NULL) {
            !isset($data[$this->_primary_key]) || $data[$this->_primary_key] = NULL;
            $this->db->set($data);
            $this->db->insert($this->_table_name);
            $id = $this->db->insert_id();
        }
        // Update
        else {
            $filter = $this->_primary_filter;
            $id = $filter($id);
            $this->db->set($data);
            $this->db->where($this->_primary_key, $id);
            $this->db->update($this->_table_name);
        }

        return $id;
    }

    public function delete($id){
        $filter = $this->_primary_filter;
        $id = $filter($id);

        if (!$id) {
                return FALSE;
        }
        $this->db->where($this->_primary_key, $id);
        $this->db->limit(1);
        $this->db->delete($this->_table_name);
    }
}

---

通过向构造函数添加以下内容，我能够解决此问题：

$this->load->model('loan_m');

因此，承包商的外观如下所示：

public function __construct() {
    parent::__construct();
    $this->load->model('loan_m');  
}

---

我看不到您的

Loans

控制器在哪里初始化

Loans\m

类变量。这似乎就是为什么

$this->load_m

为空。

class Loans extends Admin_Controller{
    public function __construct() {
        parent::__construct();
    }

    public function index(){
        // Fetch all loans
        $this->data['loans'] = $this->loan_m->get();

        $this->data['page_title'] = 'Loans';
        $this->data['subview'] = 'administrator/loans/index';
        $this->load->view( 'administrator/body', $this->data );
    }
}