If I have a mixed single/joined table inheritance hierarchy:
class Person(Base):
__tablename__ = "person"
id = Column(Integer, primary_key=True)
__mapper_args__ = {
"polymorphic_on": type,
}
class Employee(Person):
foo = Column(Integer)
__mapper_args__ = {
"polymorphic_identity": "employee",
}
class Contractor(Person):
__tablename__ = "contractor"
id = Column(Integer, ForeignKey(Person.id), primary_key=True)
__mapper_args__ = {
"polymorphic_identity": "contractor",
}
What do I put for "with_polymorphic" if I want only Employee (and not
Contractor) to be loaded? The only examples I could find are for
"with_polymorphic":
"*". In particular, 1. how do I get a reference to Contractor if it's
defined below Person (and it has to be below because it inherits from Person),
and 2. what's the second element in the tuple supposed to be for a normal
joined or single table inheritance scenario?
--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Minimal, Complete, and Verifiable
Example. See http://stackoverflow.com/help/mcve for a full description.
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