<input type="hidden" name="language" value="{{ lang.0 }}"/>
<button type="submit" lang="{{ lang.0 }}"
class="{% ifequal lang.0 LANGUAGE_CODE %}active{% endifequal %}">{{ lang.1 }}</button>
<input type="hidden" name="language" value="{{ lang.0 }}"/>
<button type="submit" lang="{{ lang.0 }}"
class="{% ifequal lang.0 LANGUAGE_CODE %}active{% endifequal %}">{{ lang.1 }}</button>