117 lines
4.6 KiB
Python
117 lines
4.6 KiB
Python
from sqlalchemy import Table, Column, Integer, ForeignKey, ForeignKeyConstraint, UniqueConstraint
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from sqlalchemy.orm import relationship
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from models.base import BaseModel
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deal_product_service_employees = Table(
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'deal_product_service_employees',
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BaseModel.metadata,
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Column('deal_id', primary_key=True),
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Column('service_id', primary_key=True),
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Column('product_id', primary_key=True),
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Column('user_id', ForeignKey('users.id'), primary_key=True),
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ForeignKeyConstraint(
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['deal_id', 'product_id', 'service_id'],
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['deal_product_services.deal_id', 'deal_product_services.product_id', 'deal_product_services.service_id']
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)
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)
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deal_service_employees = Table(
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'deal_service_employees',
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BaseModel.metadata,
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Column('deal_id', primary_key=True),
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Column('service_id', primary_key=True),
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Column('user_id', ForeignKey('users.id'), primary_key=True),
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ForeignKeyConstraint(
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['deal_id', 'service_id'],
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['deal_services.deal_id', 'deal_services.service_id']
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)
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)
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class DealService(BaseModel):
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__tablename__ = 'deal_services'
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deal_id = Column(Integer, ForeignKey('deals.id'),
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nullable=False,
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comment='ID Сделки',
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primary_key=True)
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deal = relationship('Deal', back_populates='services')
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service_id = Column(Integer, ForeignKey('services.id'), nullable=False, comment='ID Услуги', primary_key=True)
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service = relationship('Service')
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quantity = Column(Integer, nullable=False, comment='Кол-во услуги')
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price = Column(Integer, nullable=False, server_default='0', comment='Цена услуги')
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employees = relationship('User', secondary=deal_service_employees)
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__table_args__ = (
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UniqueConstraint('deal_id', 'service_id', name='uix_deal_service'),
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)
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class DealProductService(BaseModel):
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__tablename__ = 'deal_product_services'
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deal_id = Column(Integer, primary_key=True, nullable=False, comment='ID Сделки')
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product_id = Column(Integer, primary_key=True, nullable=False, comment='ID Продукта')
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service_id = Column(Integer, ForeignKey('services.id'), primary_key=True, nullable=False, comment='ID Услуги')
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price = Column(Integer, nullable=False, comment='Цена услуги')
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deal_product = relationship('DealProduct',
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back_populates='services',
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primaryjoin="and_(DealProductService.deal_id == DealProduct.deal_id, "
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"DealProductService.product_id == DealProduct.product_id)",
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foreign_keys=[deal_id, product_id])
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service = relationship('Service',
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foreign_keys=[service_id],
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lazy='joined'
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)
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employees = relationship('User',
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secondary=deal_product_service_employees,
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)
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__table_args__ = (
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ForeignKeyConstraint(
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['deal_id', 'product_id'],
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['deal_products.deal_id', 'deal_products.product_id']
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),
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)
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class DealProduct(BaseModel):
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__tablename__ = 'deal_products'
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deal_id = Column(Integer, ForeignKey('deals.id'), primary_key=True, nullable=False, comment='ID Сделки')
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product_id = Column(Integer, ForeignKey('products.id'), primary_key=True, nullable=False, comment='ID Продукта')
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quantity = Column(Integer, nullable=False, comment='Кол-во продукта')
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deal = relationship('Deal',
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back_populates='products',
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foreign_keys=[deal_id])
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product = relationship(
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'Product',
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lazy='joined',
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foreign_keys=[product_id],
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)
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services = relationship('DealProductService',
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back_populates='deal_product',
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cascade="all, delete-orphan",
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primaryjoin="and_(DealProductService.deal_id == DealProduct.deal_id, "
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"DealProductService.product_id == DealProduct.product_id)",
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foreign_keys=[DealProductService.deal_id, DealProductService.product_id],
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lazy='joined',
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order_by="desc(DealProductService.service_id)"
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)
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barcode_template_attribute_link = Table(
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'barcode_template_attribute_links',
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BaseModel.metadata,
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Column('barcode_template_id', ForeignKey('barcode_templates.id')),
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Column('attribute_id', ForeignKey('barcode_template_attributes.id'))
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)
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