Fixed #83 -- Added an informal German translation

src/pretix/base/i18n.py

@@ -36,8 +36,14 @@ class LazyI18nString:
             return ""
         if isinstance(self.data, dict):
             lng = translation.get_language()
+            firstpart = lng.split('-')[0]
+            similar = [l for l in self.data.keys() if l.startswith(firstpart + "-")]
             if lng in self.data and self.data[lng]:
                 return self.data[lng]
+            elif firstpart in self.data:
+                return self.data[firstpart]
+            elif similar:
+                return self.data[similar[0]]
             elif settings.LANGUAGE_CODE in self.data and self.data[settings.LANGUAGE_CODE]:
                 return self.data[settings.LANGUAGE_CODE]
             elif len(self.data):

src/pretix/base/middleware.py

@@ -26,7 +26,15 @@ class LocaleMiddleware(BaseLocaleMiddleware):
         language = get_language_from_request(request)
         if hasattr(request, 'event') and not request.path.startswith(get_script_prefix() + 'control'):
             if language not in request.event.settings.locales:
-                language = request.event.settings.locale
+                firstpart = language.split('-')[0]
+                if firstpart in request.event.settings.locales:
+                    language = firstpart
+                else:
+                    language = request.event.settings.locale
+                    for lang in request.event.settings.locales:
+                        if lang == firstpart or lang.startswith(firstpart + '-'):
+                            language = lang
+                            break
         translation.activate(language)
         request.LANGUAGE_CODE = translation.get_language()
 

src/pretix/settings.py

@@ -170,8 +170,23 @@ LOCALE_PATHS = (
 LANGUAGES = (
     ('en', _('English')),
     ('de', _('German')),
+    ('de-informal', _('German (informal)')),
 )
 
+EXTRA_LANG_INFO = {
+    'de-informal': {
+        'bidi': False,
+        'code': 'de-informal',
+        'name': 'German (informal)',
+        'name_local': 'Deutsch (Du)'
+    },
+}
+
+# Add custom languages not provided by Django
+import django.conf.locale
+django.conf.locale.LANG_INFO.update(EXTRA_LANG_INFO)
+
+
 AUTH_USER_MODEL = 'pretixbase.User'
 LOGIN_URL = '/login'  # global login does not yet exist
 LOGIN_URL_CONTROL = 'control:auth.login'