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"""
Internal DRY functions.
"""
from django.conf import settings
from parler import appsettings
from parler.utils import get_language_title, is_multilingual_project, normalize_language_code
def get_language_parameter(request, query_language_key="language", object=None, default=None):
"""
Get the language parameter from the current request.
"""
# This is the same logic as the django-admin uses.
# The only difference is the origin of the request parameter.
if not is_multilingual_project():
# By default, the objects are stored in a single static language.
# This makes the transition to multilingual easier as well.
# The default language can operate as fallback language too.
return default or appsettings.PARLER_LANGUAGES.get_default_language()
else:
# In multilingual mode, take the provided language of the request.
code = request.GET.get(query_language_key)
if not code:
# forms: show first tab by default
code = default or appsettings.PARLER_LANGUAGES.get_first_language()
return normalize_language_code(code)
def get_language_tabs(request, current_language, available_languages, css_class=None):
"""
Determine the language tabs to show.
"""
tabs = TabsList(css_class=css_class)
get = request.GET.copy() # QueryDict object
tab_languages = []
site_id = getattr(settings, "SITE_ID", None)
for lang_dict in appsettings.PARLER_LANGUAGES.get(site_id, ()):
code = lang_dict["code"]
title = get_language_title(code)
get["language"] = code
url = f"?{get.urlencode()}"
if code == current_language:
status = "current"
elif code in available_languages:
status = "available"
else:
status = "empty"
tabs.append((url, title, code, status))
tab_languages.append(code)
# Additional stale translations in the database?
if appsettings.PARLER_SHOW_EXCLUDED_LANGUAGE_TABS:
for code in available_languages:
if code not in tab_languages:
get["language"] = code
url = f"?{get.urlencode()}"
if code == current_language:
status = "current"
else:
status = "available"
tabs.append((url, get_language_title(code), code, status))
tabs.current_is_translated = current_language in available_languages
tabs.allow_deletion = len(available_languages) > 1
return tabs
class TabsList(list):
def __init__(self, seq=(), css_class=None):
self.css_class = css_class
self.current_is_translated = False
self.allow_deletion = False
super().__init__(seq)
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