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75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy import Column, String, Integer, ForeignKey, \
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DateTime, Text, Boolean
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from sqlalchemy.orm import relationship, backref
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from session import new_engine
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Base = declarative_base()
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def init_db():
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Base.metadata.create_all(new_engine())
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class Event(Base):
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"""
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A single event awaiting scheduling. Once a time has been selected by the
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user, an email will be sent and this entry deleted.
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"""
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__tablename__ = 'event'
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id = Column(Integer, primary_key=True)
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title = Column(String(255))
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location = Column(Text())
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description = Column(Text())
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@property
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def organizer(self):
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return filter(lambda a: a.is_sender, self.attendees)[0]
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class EventTime(Base):
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"""
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A time range option for a single event. An event can have many times - the
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user will choose one to schedule the event. Time ranges are deleted when
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the event is deleted.
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"""
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__tablename__ = 'eventtime'
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id = Column(Integer, primary_key=True)
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start = Column(DateTime())
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end = Column(DateTime())
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key = Column(String(255))
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event_id = Column(Integer, ForeignKey('event.id'))
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event = relationship('Event',
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foreign_keys=[event_id],
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backref=backref('times', lazy='dynamic'),
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lazy='joined',
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single_parent=True,
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cascade="all, delete-orphan")
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class Attendee(Base):
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"""
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An attendee for a single event. These are not stored normalized, because
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they're short-lived and need to be reliably deleted when the event is
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deleted.
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"""
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__tablename__ = 'attendee'
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id = Column(Integer, primary_key=True)
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name = Column(String(255))
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email = Column(String(255))
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is_sender = Column(Boolean())
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event_id = Column(Integer, ForeignKey('event.id'))
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event = relationship('Event',
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foreign_keys=[event_id],
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backref=backref('attendees', lazy='dynamic'),
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lazy='joined',
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single_parent=True,
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cascade="all, delete-orphan") |