initial implementation as in #1485

InvenTree/part/templatetags/inventree_extras.py

@@ -6,6 +6,7 @@ import os
 from django import template
 from django.urls import reverse
 from django.utils.safestring import mark_safe
+from django.templatetags.static import StaticNode
 from InvenTree import version, settings
 
 import InvenTree.helpers
@@ -180,3 +181,31 @@ def object_link(url_name, pk, ref):
 
     ref_url = reverse(url_name, kwargs={'pk': pk})
     return mark_safe('<b><a href="{}">{}</a></b>'.format(ref_url, ref))
+
+
+class I18nStaticNode(StaticNode):
+    """
+    custom StaticNode
+    replaces a variable named *lng* in the path with the current language
+    """
+    def render(self, context):
+        self.path.var = self.path.var.format(lng=context.request.LANGUAGE_CODE)
+        ret = super().render(context)
+        return ret
+
+
+@register.tag('i18n_static')
+def do_i18n_static(parser, token):
+    """
+    Overrides normal static, adds language - lookup for prerenderd files #1485
+
+    usage (like static):
+    {% i18n_static path [as varname] %}
+    """
+    bits = token.split_contents()
+    loc_name = settings.STATICFILES_I18_PREFIX
+
+    # change path to called ressource
+    bits[1] = f"'{loc_name}/{{lng}}.{bits[1][1:-1]}'"
+    token.contents = ' '.join(bits)
+    return I18nStaticNode.handle_token(parser, token)