Django: How to force translation into a given language inside a template?
django, django-templates, gettext, internationalization
Solution
templatetags/trans_to.py:
from django.utils import translation
from django.utils.translation import ugettext
from django.template import Library, Node, Variable, TemplateSyntaxError
register = Library()
class TransNode(Node):
def __init__(self, value, lc):
self.value = Variable(value)
self.lc = lc
def render(self, context):
translation.activate(self.lc)
val = ugettext(self.value.resolve(context))
translation.deactivate()
return val
def trans_to(parser, token):
try:
tag_name, value, lc = token.split_contents()
except ValueError:
raise TemplateSyntaxError, "%r tag requires arguments" % token.contents.split()[0]
if not (lc[0] == lc[-1] and lc[0] in ('"', "'")):
raise TemplateSyntaxError, "%r locale should be in quotes" % tag_name
return TransNode(value, lc[1:-1])
register.tag('trans_to', trans_to)
html:
{% load trans_to %}
{# pass string #}
<p>{% trans_to "test" "de" %}</p>
<p>{% trans "test" %}</p>
{# pass variable #}
{% with "test" as a_variable %}
<p>{% trans_to a_variable "de" %}</p>
<p>{% trans a_variable %}</p>
{% endwith %}
result:
<p>test in deutsch</p>
<p>test</p>
<p>test in deutsch</p>
<p>test</p>
Problem
In a Django template, I need to transanlate some strings to a specific language (different from current one). I would need something like this: ``` {% tans_to "de" "my string to translate" %} or {% blocktrans_to "de" %}my bloc to translate {% endblocktrans_to %} ``` to force translation to German. I know I can call the following code in a view: ``` gettext.translation('django', 'locale', ['de'], fallback=True).ugettext("my string to translate") ``` Do I need to create a specific template tag ? Or does it already exist a dedicated tag in Django ?