Library throws 'super' object has no attribute 'coerce' when column value is null() #55
Description
Code to reproduce the exception
from sqlalchemy import Column
from sqlalchemy import create_engine, null, Integer
from sqlalchemy.dialects.sqlite import JSON
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy_json import mutable_json_type
Base = declarative_base()
eng = create_engine("sqlite://")
class JTable(Base):
__tablename__ = 'jtable'
id = Column(Integer, primary_key=True)
value = Column(mutable_json_type(JSON, nested=True))
def create_table():
conn = eng.connect()
conn.execute(
"""
CREATE TABLE IF NOT EXISTS jtable (
id INTEGER PRIMARY KEY,
value TEXT NULL
);
"""
)
if __name__ == "__main__":
create_table()
# throws - AttributeError: 'super' object has no attribute 'coerce'
row = JTable(value=null())
This seem very similar to #10 and probably can be solved by adding similar checks.
I can prepare a PR if necessary