How to get errors when using validate ?

[JulieRossi]

Hi !

I am using flask-marshmallow for the first time and the lib looks great but I don't get what I am supposed to do to get an error when I try to validate an element with a missing field.

Here's a simplified version of the code :

from flask import Flask
from flask_marshmallow import Marshmallow

app = Flask(__name__)
ma = Marshmallow(app)
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy(app)

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String, nullable=False)

class UserSchema(ma.Schema):
    class Meta:
        fields = ("id", "name")

user_schema = UserSchema()

print(user_schema.validate({}, partial=False))

This outputs {} while I would expect it to return an object listing errors.
(Just in case, I also tried with partial=True and partial=('id',), and I also tried to set the partial values at different places (schema definition and schema instanciation) but I get the same result)

Could you please advice on what I am doing wrong ?

For information, here are the versions I use :

marshmallow==3.0.0rc8
marshmallow-sqlalchemy==0.17.0
flask-marshmallow==0.10.1
Flask-SQLAlchemy==2.4.0
SQLAlchemy==1.3.6

[sjokkateer]

Initialize the SQLAlchemy and Marshmallow extensions, in that order.