moves localize_descriptors logic into own search_component, LocalizeR…

…esultDescriptors, re #10804

arches/app/search/components/localize_result_descriptors.py

@@ -0,0 +1,31 @@
+from arches.app.models.system_settings import settings
+from arches.app.search.components.base import BaseSearchFilter
+from django.utils.translation import get_language, gettext as _
+
+class LocalizeResultDescriptors(BaseSearchFilter):
+    def view_data(self):
+        pass
+
+    def post_search_hook(self, search_results_object, response_object, permitted_nodegroups, request):
+
+        def get_localized_descriptor(resource, descriptor_type, language_codes):
+            descriptor = resource["_source"][descriptor_type]
+            result = descriptor[0] if len(descriptor) > 0 else None
+            for language_code in language_codes:
+                for entry in descriptor:
+                    if entry["language"] == language_code and entry["value"] != "":
+                        return entry
+            return result
+
+        descriptor_types = ("displaydescription", "displayname")
+        active_and_default_language_codes = (get_language(), settings.LANGUAGE_CODE)
+
+        for resource in response_object["results"]["hits"]["hits"]:
+            for descriptor_type in descriptor_types:
+                descriptor = get_localized_descriptor(resource, descriptor_type, active_and_default_language_codes)
+                if descriptor:
+                    resource["_source"][descriptor_type] = descriptor["value"]
+                    if descriptor_type == "displayname":
+                        resource["_source"]["displayname_language"] = descriptor["language"]
+                else:
+                    resource["_source"][descriptor_type] = _("Undefined")