tournonsLaPage/plugins/langswitcher/templates/partials/langswitcher.hreflang.html.twig

{% set language_obj = grav.language %}
{% for language in langswitcher.languages %}
	{% if langswitcher.translated_routes[language] %}
		{% set lang_url = langswitcher.translated_routes[language] ~ page.urlExtension %}
	{% else %}
		{% set base_lang_url = base_url_simple ~ grav.language.getLanguageURLPrefix(language) %}
		{% set lang_url = base_lang_url ~ langswitcher.page_route ~ page.urlExtension %}
	{% endif %}

	{% set href_url = uri.base ~ lang_url ~ uri.params ~ (uri.query|length > 1 ? '?' ~ uri.query) %}

	{% if (language_obj.default == language and config.languages.include_default_lang == false) %}
	<link rel="alternate" hreflang="x-default" href="{{ href_url }}" />
	{% endif %}
	<link rel="alternate" hreflang="{{ language }}" href="{{ href_url }}" />
{% endfor %}