how to serialise a enum property in sqlalchemy using marshmallow

Question

this is my model class

class Type(enum.Enum):
    Certified = \"certified\"
    Non_Certified = \"non-certified\"


class Status(enum.Enum):
    Approved = \         


        

Answer 1

For enum fields, the simplest approach is to install the package called marshmallow_enum via pip (pip install marshmallow_enum), importing it in your project and then in your marshmallow schema definitions override the SQLAlchemy fields with your custom definition:

from marshmallow_enum import EnumField
...


class CourseSchema(ModelSchema):
    type = EnumField(Type, by_value=True)

    class Meta:
        model = Course
        sqla_session = session

All fields that weren't overridden by your custom definitions will be taken from your model.

You can experiment with the by_value parameter, which enables you to either serialize names (by default) or values (by_value=True) of your enums.