It's pretty simple to do to be honest. You need to create a controller for your file, naming based on the folder and filename. For instance common/home.php
has
Class ControllerCommonHome extends Controller
This is accessed using index.php?route=common/home
and accesses the index()
method. If you want to call another method, for instance foo, you would need to define the method as
public function foo() {
// Code here
}
and would call it using index.php?route=common/home/foo
As for rendering the view, that's a bit trickier. Basically you need to add all of this to the end of your controller method
if (file_exists(DIR_TEMPLATE . $this->config->get('config_template') . '/template/common/new_template_file.tpl')) {
$this->template = $this->config->get('config_template') . '/template/common/new_template_file.tpl';
} else {
$this->template = 'default/template/common/new_template_file.tpl';
}
$this->children = array(
'common/column_left',
'common/column_right',
'common/content_top',
'common/content_bottom',
'common/footer',
'common/header'
);
$this->response->setOutput($this->render());
Which will render /catalog/view/theme/your-theme-name/template/common/new_template_file.tpl
If that file doesn't exist, it will attempt to use the same path in the default
theme folder
I'd recommend you take a look at a few controllers and templates to get your head around where everything comes from properly, but that's the basic gist of how it works