language-selector.html

{%- assign posts=site.posts | where:"lang_ref", page.lang_ref | where_exp: "post", "page.lang != post.lang" | sort: 'path' -%}
{%- assign pages=site.pages | where:"lang_ref", page.lang_ref | where_exp: "item", "page.lang != item.lang" | sort: 'path' -%}
{%- if posts.size > 0 -%}
{% assign items = posts %}
{%- else -%}
{% assign items = pages %}
{%- endif -%}
{%- comment -%}
Only grab elements from the post list, that are the equivalent according to
the lang_ref metadata. Also ensure, that only posts are grabbed that have a
different language.
{%- endcomment -%}
{%- assign t = site.data._i18n.translations[page.lang]['global'] -%}
<p class="text-right">
    {%- for item in items -%}
    {%- assign language_text = "lang-" | append: item.lang -%}
    {%- if forloop.first -%}
    <i class="fas fa-globe-europe"></i>&nbsp;<i>{{ t['lang-selector'] }}&nbsp;</i>
    {%- endif -%}
    <a href="{{ item.url | relative_url }}">{{ t[language_text] }}</a>
    {%- unless forloop.last -%}
    &nbsp;|&nbsp;
    {%- endunless -%}
    {%- endfor -%}
</p>