33 lines
1.4 KiB
Python
33 lines
1.4 KiB
Python
from sqlalchemy import Column, Integer, String, Numeric, Date, UniqueConstraint, func
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from commons.models.mixin.steel import SteelMixin
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from core.extensions import db
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class SteelStrand(db.Model, SteelMixin):
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__tablename__ = 'STEEL_STRAND'
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id = Column('ID', Integer, primary_key=True)
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name = Column('NAME', String(128), default='', comment='名称')
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spec = Column('SPEC', String(128), default='', comment='规格')
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material = Column('MATERIAL', String(64), default='', comment='材质')
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source = Column('SOURCE', String(64), default='', comment='产地')
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price = Column('PRICE', Numeric(16, 4), default=0, comment='价格')
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fluctuating = Column('FLUCTUATING', Numeric(16, 4), default=0, comment='浮动')
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date = Column('DATE', Date, comment='日期')
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__table_args__ = (
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UniqueConstraint(name, spec, material, source, date, name='Idx_key'),
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{'comment': '钢绞线'},
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)
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@classmethod
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def get_items(cls, year, month, material_in=('SWRH82B',), name_in=('弹簧钢',)):
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query = cls.query
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query = cls.query_by_month(query, year, month)
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query = query.filter(cls.material.in_(material_in))
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query = query.filter(cls.name.in_(name_in))
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query = query.with_entities(cls.material, func.avg(cls.price))
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query = query.group_by(cls.material)
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result = query.all()
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return result
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