opencart控制器和儿童

Question

I have two questions:

In a controller ControllerMainIndex in opencart we do define

$this->children = array("common/footer"); 

Then how should I utilize it in the main/index.tpl file?

It is a little bit vague for me. We have told the controller to get footer but in the main file how should we specify their position?

Second question, I create controller ControllerMasterNewPage and then in I $this->render() (after setting the template to "master/newpage.tpl").

But how should I access this controller? I means what should be typed in the browser for this controller to be process and have output?

Answer 1

1) Just call <?php echo $footer ?> it will output that child content

2) http://example.com/index.php?route=path/MasterNewPage/actionName

e.g.: We have file in {root}/catalog/controller/product/category.php (class name ControllerProductCategory), call it: http://example.com/index.php?route=product/category