class City(Model):
id = Property(str, name='geonameid', primary_key=True)
name = Property(str)
country = Property(str)
subcountry = Property(str)
class Artist(Model):
class Options:
slots = True
id = Property(int, primary_key=True)
title = Property(str)
class User(Model):
class Options:
slots = True
id = Property(int, primary_key=True)
username = Property(str)
password = Property(str)
class Album(Model):
class Options:
slots = True
id = Property(int, primary_key=True)
artist = Property(Artist)
title = Property(str)
class User(Model):
id = Property(int, primary_key=True)
username = Property(str)
password = Property(str)
created_at = Property(datetime, default=lambda: datetime.now())
updated_at = Property(datetime, default=lambda: datetime.now())
def __bind_property_relation(cls, properties, key, prop):
# Bind `prop` (to ensure metadata is available)
prop.bind(cls, key + '_id')
# Create identifier property
p_id = Property(prop.relation.value_type)
p_id.bind(cls, key + '_id')
# Create resolve property
p_resolve = RelationProperty(p_id, prop.value_type)
p_resolve.bind(cls, key)
# Store resolve property on model
setattr(cls, key, p_resolve)
# Store resolve property on model `Properties`
setattr(properties, key, p_resolve)
properties.__all__[key] = p_resolve
# Store identifier property on model `Properties`
setattr(properties, key + '_id', p_id)
properties.__all__[key + '_id'] = p_id
class Artist(Model):
id = Property(int, primary_key=True)
title = Property(str)
class Album(Model):
id = Property(int, primary_key=True)
artist = Property(Artist)
title = Property(str)
class Track(Model):
id = Property(int, primary_key=True)
artist = Property(Artist)
album = Property(Album)
title = Property(str)