Depending on how attributes are set on child classes, rowupdatesignal
fires either just on the base class, or on both the base and the child.
This is inconsistent.
from sqlobject import *
from sqlobject.inheritance import InheritableSQLObject
class Base(InheritableSQLObject):
name = StringCol()
def _set_name(self, new_name):
print "base", new_name
self._SO_set_name(new_name)
class Child(Base):
def _set_name(self, new_name):
print "child", new_name
self._SO_set_name(new_name)
sqlhub.processConnection = connectionForURI('sqlite:/:memory:')
Base.createTable()
Child.createTable()
def rowUpdateb(instance, kwargs):
print "base signal", instance, kwargs
def rowUpdatec(instance, kwargs):
print "child signal", instance, kwargs
events.listen(rowUpdateb, Base, events.RowUpdateSignal)
events.listen(rowUpdatec, Child, events.RowUpdateSignal)
c = Child(name="zero")
c.name = "one" #once
c.set(name="two") #twice
-----------
results:
base zero
base one
base signal <Base 1 name='zero'> {'name': 'one'}
child signal <Child 1 name='one'> {'name': 'two'}
base two
base signal <Base 1 name='one'> {'name': 'two'}
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