如何从 opencart 中的视图调用控制器？

Question

I'm new to opencart. I want to create a custom theme and some custom controllers and models. I can't find any tutorials relative to this, but I tried to create a view along a controller. When I call that view from home or header view page, like $header (in home file) and $search (in header file), then it shows undefined variable.

My code looks like this. It's in controller (path is catalog\\controller\\common\\test.php ).

<?php
class ControllerCommonTest extends Controller{
    public function index() {
 if(file_exists(DIR_TEMPLATE.this->config->get('config_template').'/template/test/test.tpl')) {

        $this->response->setOutput($this->render());
    } else {
        return $this->load->view('default/template/common/header.tpl');
    }
    }
}
?>

And my view is in \\view\\theme\\MyTheme\\template\\common\\test.tpl

<?php
echo "Test file";
?>

And in my home file, I call my controller like below...

<?php
echo $header;
echo $test;
echo $footer;
?>

When I run this it shows the below error:

Notice: Undefined variable: test in C:\\xampp\\htdocs\\opencart\\catalog\\view\\theme\\MyCustome\\template\\common\\home.tpl on line 4

So, please provide any tutorial links and any examples for developing a custom module in opencart.

Thanks in advance.

Answer 1

To display test module tpl ie test.tpl on home page, You have load test controller on home controller. Please add following code in catalog/controller/common/home.php

add this code

$data['test'] = $this->load->controller('common/test');

After

$data['header'] = $this->load->controller('common/header');