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try ondelete=SET NULL in foreign keys

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Min RK
2016-07-09 12:13:04 +02:00
parent 2eaecd22ba
commit ff9aeb70b4
1 changed files with 2 additions and 2 deletions
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4
jupyterhub/orm.py
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@@ -304,7 +304,7 @@ class User(Base):
id = Column(Integer, primary_key=True, autoincrement=True)
name = Column(Unicode(1023))
# should we allow multiple servers per user?
_server_id = Column(Integer, ForeignKey('servers.id'))
_server_id = Column(Integer, ForeignKey('servers.id', ondelete="SET NULL"))
server = relationship(Server, primaryjoin=_server_id == Server.id)
admin = Column(Boolean, default=False)
last_activity = Column(DateTime, default=datetime.utcnow)
@@ -370,7 +370,7 @@ class APIToken(Base):
@declared_attr
def user_id(cls):
return Column(Integer, ForeignKey('users.id'))
return Column(Integer, ForeignKey('users.id', ondelete="SET NULL"))
id = Column(Integer, primary_key=True)
hashed = Column(Unicode(1023))