After more testing and thanks to the related question linked by @AronYsidoro I've finally found the issue and a very simple solution that actually solves this.
First, let me explain the problem: When working with i18_patterns
in your urls.py
to prepend the language code, if you call the URL set_language
to change the language without specifying next
, it defaults to the current one, but with the prepended old language code! So, the language gets back to the original! And, if you explicitly specify next
, you must be sure to do not include the language code at the begining.
If you use {{ request.path }}
or {{ request.get_full_path }}
to specify the next
as the current page this won't work as it returns the language code too.
So, how do we remove this undesired language code to reload the current page with the language changed when using i18n_patterns
? Easy, we just have to slice the 3 first chars (the slash and the two chars language code)!
Here you have two examples. The first one in form of a select (with the languages as choices) and the other one in form of a button (per language).
I really hope this helps someone else. You can just copy and paste the code and it should work. However, if using the "button form", you just have to set the language to your desired!
Change language from list:
<form action="{% url 'set_language' %}" method="post">
{% csrf_token %}
<input name="next" type="hidden" value="{{ request.get_full_path|slice:'3:' }}" />
<select name="language">
{% get_language_info_list for LANGUAGES as languages %}
{% for language in languages %}
<option value="{{ language.code }}"{% if language.code == LANGUAGE_CODE %} selected="selected"{% endif %}>
{{ language.name_local }} ({{ language.code }})
</option>
{% endfor %}
</select>
<input type="submit" value="Change" />
</form>
Change language as button:
<form action="{% url 'set_language' %}" method="post">
{% csrf_token %}
<input name="next" type="hidden" value="{{ request.get_full_path|slice:'3:' }}" />
<input name="language" type="hidden" value="es" />
<input type="submit" value="ES" />
</form>