Moodle in English: Core Renderer Issue in my own theme

Core Renderer Issue in my own theme - Moodle 3.7

by Dave Emsley - Thursday, March 12, 2020, 10:38 PM

Hi All,

I'm a little perplexed with the core_renderer.

I've created a theme and in mustache files there is the line:
{{{ output.full_header }}}

As I understand this this is calling the function full_header() from lib/outputrenderers.php

To override this I had though I create a file called my_theme/classes/output/core_renderer.php

So far so good. The file contains...

namespace theme_my_theme\output;
use moodle_url;
defined('MOODLE_INTERNAL') || die;
class core_renderer extends \renderer_base {
    public function full_header() {
        global $PAGE;
        $header = new stdClass();
        $header->settingsmenu = $this->context_header_settings_menu();
        $header->contextheader = $this->context_header();
        $header->hasnavbar = empty($PAGE->layout_options['nonavbar']);
        $header->navbar = $this->navbar();
        $header->pageheadingbutton = $this->page_heading_button();
        $header->courseheader = $this->course_header();
        return $this->render_from_template('core/my_header', $header);
    }

}

Yet this doesn't work, it seems to still call the function from lib/outputrenderers.php, rather than overriding it.

I'm sure I've done something blindingly wrong but I cannot see it.

Thanks in Advance,

Dave

Re: Core Renderer Issue in my own theme - Moodle 3.7

by Matt Donnelly - Friday, March 13, 2020, 2:44 AM

Hi Dave, I think you need to call your own template in your theme templates/ folder in the render_from_template function call. Mine looks like this:

return $this->render_from_template('theme_boostchild/full_header', $header);

Average of ratings:Useful (1)

Re: Core Renderer Issue in my own theme - Moodle 3.7

by Dave Emsley - Monday, March 16, 2020, 7:20 PM

Hi Matt, Thanks for that - I can do that no problem but what I want to do is to use some php code within the header. Basically I want to parse the URL and use different templates for each category

something like:

if($_GET['categoryid']==1) {
  return $this->render_from_template('theme_my_theme/full_header1', $header);
}
elseif($_GET['categoryid']==2) {
  return $this->render_from_template('theme_my_theme/full_header2', $header);
}

etc

Cheers

Dave

Average of ratings: -

Re: Core Renderer Issue in my own theme - Moodle 3.7

by Matt Donnelly - Monday, March 16, 2020, 10:53 PM

Apologies if this isn't what you're after but I'll tell you what I have that can accomplish what I think you want. I didn't use $_GET to get the course category but just got it from $PAGE->categories property which is an array of the parent/children categories. The code below isn't pretty (probably use a switch) but the it calls a different template based on that parameter. So on a page like /course/index.php?categoryid=10:

theme/boostchild/classes/output/core_renderer.php:

    public function full_header() {
        global $PAGE;

        $header = new stdClass();
        $header->settingsmenu = $this->context_header_settings_menu();
        $header->contextheader = $this->context_header();
        $header->hasnavbar = empty($PAGE->layout_options['nonavbar']);
        $header->navbar = $this->navbar();
        $header->pageheadingbutton = $this->page_heading_button();
        $header->courseheader = $this->course_header();
        $header->isincourse = $PAGE->pagelayout == 'incourse'? true : false;
        $template = 'full_header';
        if (in_array(10, array_keys($PAGE->categories))) {
            $template = 'full_header2';
        }
        return $this->render_from_template('theme_boostchild/' . $template, $header);
    }

Then my theme/boostchild/templates folder has full_header.mustache and full_header2.mustache.

Average of ratings: -

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Core Renderer Issue in my own theme - Moodle 3.7