[ADD] Locale mapping for DataTables and Moment.JS

allianceauth/project_template/project_name/settings/base.py

@@ -117,6 +117,39 @@ LANGUAGES = (  # Sorted by Language Code alphabetical order + English at top
     ("zh-hans", _("Simplified Chinese")),
 )
 
+# Django's language codes are different from some of the libraries we use,
+# so we need to map them.
+LANGUAGE_MAPPING = {
+    "DataTables": {
+        "cs-cz": "cs",
+        "de": "de-DE",
+        "es": "es-ES",
+        "fr-fr": "fr-FR",
+        "it-it": "it-IT",
+        "ja": "ja",
+        "ko-kr": "ko",
+        "nl-nl": "nl-NL",
+        "pl-pl": "pl",
+        "ru": "ru",
+        "uk": "uk",
+        "zh-hans": "zh-HANT",
+    },
+    "MomentJS": {
+        "cs-cz": "cs",
+        "de": "de",
+        "es": "es",
+        "fr-fr": "fr",
+        "it-it": "it",
+        "ja": "ja",
+        "ko-kr": "ko",
+        "nl-nl": "nl",
+        "pl-pl": "pl",
+        "ru": "ru",
+        "uk": "uk",
+        "zh-hans": "zh-cn",
+    },
+}
+
 TEMPLATES = [
     {
         'BACKEND': 'django.template.backends.django.DjangoTemplates',