如何在opencart 3.0中加载模型？

Question

未捕获错误：在/opt/lampp/htdocs/epos/catalog/controller/prerecorded/preDemo.php:43中调用null上的成员函数preDemo1（）堆栈跟踪：＃0 / opt / lampp / htdocs / epos / system / engine / action.php（79）：ControllerPrerecordedPreDemo-> insertData（）＃1 /opt/lampp/htdocs/epos/catalog/controller/startup/router.php(25）：Action-> execute（Object（Registry））＃ 2 /opt/lampp/htdocs/epos/system/engine/action.php(79）：ControllerStartupRouter-> index（）＃3 /opt/lampp/htdocs/epos/system/engine/router.php(67）：动作 - > execute（Object（Registry））＃4 /opt/lampp/htdocs/epos/system/engine/router.php(56）：Router-> execute（Object（Action））＃5 / opt / lampp / htdocs / epos / system / framework.php（168）：Router-> dispatch（Object（Action），Object（Action））＃6 /opt/lampp/htdocs/epos/system/startup.php(104):require_once('/ opt / lampp / htdo ...'）＃7 /opt/lampp/htdocs/epos/index.php(19）：start（'catalog'）＃opt {lamp} / opt / lampp / htdocs / epos /目录/ controller / prerecorded / preDemo.php在第43行

# Controller

public function insertData(){
        // print_r($_POST);exit;

        if($this->request->post['name'] && $this->request->post['email'] && $this->request->post['contactNumber'] && $this->request->post['businessType'] && $this->request->post['businessName'] && $this->request->post['role'] ) {

$data = array(
$name = $this->request->post['name'],
$email = $this->request->post['email'],
$contactNumber = $this->request->post['contactNumber'],
$businessType = $this->request->post['businessType'],
$businessName = $this->request->post['businessName'],
$role = $this->request->post['role']);
} 

else {
$name = 0;
}
// echo "<pre>";print_r($data);
$this->load->model('prerecorded/preDemo');
$this->preDemo->preDemo1($data);



    }

# Model ##########

<?php
class ModelPrerecordedPreDemo extends Model {
    public function preDemo1($data) {

        $this->db->insert("",$data);
    }
}

Answer 1

您的模型似乎存在命名问题。文件名与文件内的类匹配得很多。您也没有遵循CodeIgniter的文件命名约定。

模型文件preDemo.php可能应该命名为Pre_demo.php并像这样声明

class Pre_demo extends Model {

完成后，模型应该成功加载（显然不会在您的代码中加载）。

$this->load->model('prerecorded/pre_demo');
$this->pre_demo->preDemo1($data);

Answer 2

从模型正确加载功能：

$this->prerecorded_preDemo->preDemo1($data);