MapperEvents before_update, after_update do not work

Migrated issue, originally created by Karol Narowski

Function is not called when set in listener. before_insert and after_insert is working well but before_update and after_update are not called. Ex.

class User(Base):
    __tablename__ = 'users'

    uid = Column(String(36), primary_key=True, unique=True, default=generate_uuid)
    name = Column(String(15), nullable=False)
    description = Column(String(25), nullable=False)
    phone = Column(String(20), nullable=False)
    hash = Column(String(128), nullable=True, unique=True)
    created_on = Column(DateTime(), default=datetime.utcnow)
    updated_on = Column(DateTime(), default=datetime.utcnow, onupdate=datetime.utcnow)
@listens_for(User, 'before_insert')
def before_insert_function(mapper, connection, target):
    print(target.phone)
    target.hash = "OtherInsert"


@listens_for(User, 'before_update')
def before_update_function(mapper, connection, target):
    print(target.uid)
    print(target.phone)
    target.hash = "OtherUpdate"

[sqlalchemy-bot]

Michael Bayer (@zzzeek) wrote:

yes! the query.update() and query.delete() methods don’t interact with the mapper before_update/after_update/before_delete/after/delete events.

http://docs.sqlalchemy.org/en/latest/orm/query.html?highlight=query update#sqlalchemy.orm.query.Query.update

The MapperEvents.before_update() and MapperEvents.after_update() events are not invoked from this method. Instead, the SessionEvents.after_bulk_update() method is provided to act upon a mass UPDATE of entity rows.

hope this helps!

[sqlalchemy-bot]

Changes by Michael Bayer (@zzzeek):

• changed status to closed