SmartRelationshipsMixin : default exclude RelatedList

src/utils_flask_sqla/schema.py

@@ -1,4 +1,7 @@
 from marshmallow.fields import Nested
+from marshmallow_sqlalchemy.fields import RelatedList
+
+# from flask_marshmallow.fields import RelatedList
 
 
 class SmartRelationshipsMixin:
@@ -19,7 +22,7 @@ def __init__(self, *args, **kwargs):
             # excluded fields at meta level are not even generated by auto-schema
             if field is None:
                 continue
-            if isinstance(field, Nested):
+            if isinstance(field, Nested) or isinstance(field, RelatedList):
                 nested_fields.add(name)
             elif field.metadata.get("exclude", False):
                 excluded_fields.add(name)
@@ -40,6 +43,7 @@ def __init__(self, *args, **kwargs):
         exclude = kwargs.pop("exclude", None)
         exclude = set(exclude) if exclude is not None else set()
         exclude |= (excluded_fields | nested_fields) - firstlevel_only
+
         # If only contains only nested & additional fields, we need to add included_fields to serialize nested, additional & included fields.
         # If only does not contains nested or additional fields, we do nothing and marshmallow will serialize only specified fields.
         if only and not firstlevel_only - nested_fields - additional_fields: