Open
Description
Hi,
if I take the example regarding relationships and inheritance from the docs
class PersonalRelationship(neomodel.StructuredRel):
"""
A very simple relationship between two BasePersons that simply
records the date at which an acquaintance was established.
"""
on_date = neomodel.DateProperty(default_now = True)
class BasePerson(neomodel.StructuredNode):
"""
Base class for defining some basic sort of an actor in a system.
The base actor is defined by its name and a `friends_with`
relationship.
"""
name = neomodel.StringProperty(required = True, unique_index = True)
friends_with = neomodel.RelationshipTo("BasePerson", "FRIENDS_WITH", model = PersonalRelationship)
class TechnicalPerson(BasePerson):
"""
A Technical person specialises BasePerson by adding their
expertise.
"""
expertise = neomodel.StringProperty(required = True)
class PilotPerson(BasePerson):
"""
A pilot person specialises BasePerson by adding the type of
airplane they can operate.
"""
airplane = neomodel.StringProperty(required = True)
and add __abstract_node__ = True to the base class BasePerson and run the next code block
# Create some technical persons
A = TechnicalPerson(name = "Grumpy", expertise = "Grumpiness").save()
B = TechnicalPerson(name = "Happy", expertise = "Unicorns").save()
C = TechnicalPerson(name = "Sleepy", expertise = "Pillows").save()
# Create some Pilot Persons
D = PilotPerson(name = "Porco Rosso", airplane = "Savoia-Marchetti").save()
E = PilotPerson(name = "Jack Dalton", airplane = "Beechcraft Model 18").save()
# TechnicalPersons befriend Technical Persons
A.friends_with.connect(B)
B.friends_with.connect(C)
C.friends_with.connect(A)
# Pilot Persons befriend Pilot Persons
D.friends_with.connect(E)
# Technical Persons befriend Pilot Persons
A.friends_with.connect(D)
E.friends_with.connect(C)
for some_friend in A.friends_with:
print(some_friend)
I get an error
Traceback (most recent call last):
File "<input>", line 56, in <module>
File "C:\Users\wielap\.virtualenvs\neo4j-oDySRf7e\lib\site-packages\neomodel\relationship_manager.py", line 337, in __iter__
return self._new_traversal().__iter__()
File "C:\Users\wielap\.virtualenvs\neo4j-oDySRf7e\lib\site-packages\neomodel\match.py", line 527, in __iter__
return (i for i in self.query_cls(self).build_ast()._execute())
File "C:\Users\wielap\.virtualenvs\neo4j-oDySRf7e\lib\site-packages\neomodel\match.py", line 271, in build_ast
self.build_source(self.node_set)
File "C:\Users\wielap\.virtualenvs\neo4j-oDySRf7e\lib\site-packages\neomodel\match.py", line 282, in build_source
return self.build_traversal(source)
File "C:\Users\wielap\.virtualenvs\neo4j-oDySRf7e\lib\site-packages\neomodel\match.py", line 320, in build_traversal
rhs_label = ':' + traversal.target_class.__label__
AttributeError: type object 'BasePerson' has no attribute '__label__'
I'm using neomodel 4.0.1
googling revealed that there have been issues with abstract nodes (#234 , #262 )