[ENHANCEMENT] argilla-server: add search support for custom fields

argilla-server/src/argilla_server/search_engine/commons.py

@@ -20,7 +20,7 @@
 from elasticsearch8 import AsyncElasticsearch
 from opensearchpy import AsyncOpenSearch
 
-from argilla_server.enums import FieldType, MetadataPropertyType, RecordSortField, ResponseStatusFilter, SimilarityOrder
+from argilla_server.enums import MetadataPropertyType, RecordSortField, ResponseStatusFilter, SimilarityOrder
 from argilla_server.models import (
     Dataset,
     Field,
@@ -165,7 +165,7 @@
 
     if field.is_text:
         return {es_field_for_record_field(field.name): {"type": "text"}}
-    if field.is_chat:
+    elif field.is_chat:
         es_field = {
             "type": "object",
             "properties": {
@@ -174,7 +174,15 @@
             },
         }
         return {es_field_for_record_field(field.name): es_field}
-    elif field.is_image or field.is_custom:
+    elif field.is_custom:
+        return {
+            es_field_for_record_field(field.name): {
+                "type": "object",
+                "dynamic": True,
+                "properties": {},
+            }
+        }
+    elif field.is_image:
         return {
             es_field_for_record_field(field.name): {
                 "type": "object",
@@ -652,7 +660,7 @@
             if field is None:
                 raise Exception(f"Field {text.field} not found in dataset {dataset.id}")
 
-            if field.is_chat:
+            if field.is_chat or field.is_custom:
                 field_name = f"{text.field}.*"
             else:
                 field_name = text.field