page_canonical_metatag

Filter the canonical meta tag.

You need to have a working knowledge of Hooks before you get started.

#Parameters

#Boilerplate Code

Use the boilerplate code to start using the filter, and add your own logic to modify the first argument and return it.

Clickfwd\Hook\Filter::add('page_canonical_metatag', function($url, $params)
{
    // Uncomment line below to view available data passed into hook
    // fwd_dd($url, $params);

    return $url;
});

#Examples

• Custom field driven canonicals in listing detail pages

#Custom field driven canonicals in listing detail pages

This example allows using the URL value set in a custom field for the listing detail page canonical tag. This can be useful if for example you publish content that originated somewhere else, like a press release. Using the canonical references the original source, rather than creating a duplicate. The custom field used for the canonical URL needs to remain published, but can be de-activated from list and detail view so it's not visible on the page.

Clickfwd\Hook\Filter::add('page_canonical_metatag', function($url, $params) 
{
	if ($params['route'] !== "listing.detail") {
		return $url;
	}

	$custom = $params['listing']['Field']['pairs']['jr_canonical']['value'][0] ?? null;

	if (! $custom) {
		return $url;
	}

  	return $custom;
});

#Source Files

• /services/metatags/metatags.php
• /cms_compat/joomla/includes/plugins/jreviews.php
• /cms_compat/joomla/includes/plugins/jreviews-joomla4.php