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from sqlalchemy import Column, Date, ForeignKey, Integer, Unicode, func |
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from sqlalchemy.ext.declarative import declarative_base |
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from sqlalchemy.orm import (backref, column_property, relationship, |
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scoped_session, sessionmaker) |
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from zope.sqlalchemy import ZopeTransactionExtension |
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DBSession = scoped_session(sessionmaker(extension=ZopeTransactionExtension())) |
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Base = declarative_base() |
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class User(Base): |
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"""Define a User.""" |
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__tablename__ = "users" |
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id = Column(Integer, primary_key=True) |
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name = Column(Unicode, unique=True) |
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birthday = Column(Date) |
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address = relationship("Address", uselist=False, backref=backref("user")) |
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age = column_property( |
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func.strftime("%Y.%m%d", "now") - |
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func.strftime("%Y.%m%d", birthday).cast(Integer)) |
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def __unicode__(self): |
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"""Give a readable representation of an instance.""" |
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return "%s" % self.name |
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def __repr__(self): |
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"""Give a unambiguous representation of an instance.""" |
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return "<%s#%s>" % self.__class__.__name__, self.id |
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View Code Duplication |
class Address(Base): |
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"""Define an Address.""" |
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__tablename__ = "addresses" |
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id = Column(Integer, primary_key=True) |
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description = Column(Unicode, unique=True) |
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user_id = Column(Integer, ForeignKey("users.id")) |
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def __unicode__(self): |
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"""Give a readable representation of an instance.""" |
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return "%s" % self.id |
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def __repr__(self): |
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"""Give a unambiguous representation of an instance.""" |
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return "<%s#%s>" % self.__class__.__name__, self.id |
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