Fix AttributeError in DigitalLandJSONResponse (#285)

application/core/utils.py

@@ -11,6 +11,8 @@
 
 from starlette.responses import Response
 
+logger = logging.getLogger(__name__)
+
 
 def create_dict(keys_list, values_list):
     zip_iterator = zip(keys_list, values_list)
@@ -82,14 +84,21 @@ class DigitalLandJSONResponse(Response):
     media_type = "application/json"
 
     def render(self, content: typing.Any) -> bytes:
-        return json.dumps(
-            content,
-            ensure_ascii=False,
-            allow_nan=False,
-            indent=None,
-            separators=(",", ":"),
-            cls=NoneToEmptyStringEncoder,
-        ).encode("utf-8")
+        try:
+            if isinstance(content, dict):
+                return json.dumps(
+                    content,
+                    ensure_ascii=False,
+                    allow_nan=False,
+                    indent=None,
+                    separators=(",", ":"),
+                    cls=NoneToEmptyStringEncoder,
+                ).encode("utf-8")
+            else:
+                raise TypeError("Content must be a dictionary")
+        except Exception as e:
+            logger.error(f"Error rendering content: {e}")
+            raise
 
 
 def make_links(scheme, netloc, path, query, data):