hugo-toha/layouts/partials/navigators/floating-lang-selector.html

{{ $pageURL:= .RelPermalink }}
{{ if .Site.IsMultiLingual }}
    {{ $pageURL = strings.TrimPrefix (path.Join "/" .Language.Lang) $pageURL }}
{{ end }}

<div class="dropdown languageSelector">
    <a class="btn dropdown-toggle" href="#" id="languageSelector" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
        <img class="flag" src="https://www.countryflags.io/{{ partial "helpers/country-code.html" .Language }}/flat/16.png">
        {{ .Site.Language.LanguageName }}
    </a>
    <div class="dropdown-menu" aria-labelledby="languageSelector">
        {{ range .Translations }}
        <a class="dropdown-item nav-link languages-item" href="{{ path.Join "/" (cond (eq .Language.Lang "en") "" .Language.Lang) $pageURL }}">
            <img class="flag" src="https://www.countryflags.io/{{ partial "helpers/country-code.html" .Language }}/flat/24.png">
            {{ .Language.LanguageName }}
        </a>
        {{ end }}
    </div>
</div>