{% load i18n %}{% get_current_language as CURRENT_LANGUAGE %}
<form class="lang-switch" method="post" action="{% url 'switch_language' %}">
  {% csrf_token %}
  <input type="hidden" name="next" value="{{ request.get_full_path }}">
  <span class="sr-only">{% translate "Language" %}</span>
  {% for code, name in LANGUAGE_CHOICES %}
    <button type="submit" name="language" value="{{ code }}" lang="{{ code }}" aria-pressed="{% if code == CURRENT_LANGUAGE %}true{% else %}false{% endif %}">{{ name }}</button>
  {% endfor %}
</form>