Handle ObjectID conversion errors

api/utils.py

@@ -0,0 +1,17 @@
+from bson import ObjectId
+from bson.errors import InvalidId
+from fastapi import HTTPException
+
+
+def to_objectid(id: str) -> ObjectId:
+    """
+    Try to convert a given string to an ObjectId
+
+    :param id: ID in string form to convert
+    :return: Converted ObjectId
+    """
+    try:
+        oid = ObjectId(id)
+        return oid
+    except InvalidId:
+        raise HTTPException(400, f"{id} is not a recognized ID")