change schema

src/schemas.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+from flask_marshmallow.sqla import auto_field
+
 from models import SampleMetadata
 from marshm import ma
 from marshmallow import fields
@@ -32,4 +34,5 @@ class SampleMetadataSchema(ma.SQLAlchemyAutoSchema):
     """
     class Meta:
         model = SampleMetadata
-        exclude = ('timestamp', 'id',)
+        exclude = ('timestamp', 'id', 'device_date',)
+    date = auto_field("device_date", dump_only=False)