init

web/commons/models/steel_rebar.py

@@ -0,0 +1,44 @@
+import datetime
+
+from sqlalchemy import Column, Integer, String, Numeric, Date, UniqueConstraint, func
+
+from calculators import Helper
+from commons.models.mixin.steel import SteelMixin
+from core.extensions import db
+
+
+class SteelRebar(db.Model, SteelMixin):
+    __tablename__ = 'STEEL_REBAR'
+    id = Column('ID', Integer, primary_key=True)
+    name = Column('NAME', String(128), default='', comment='名称')
+    spec = Column('SPEC', String(128), default='', comment='规格')
+    material = Column('MATERIAL', String(64), default='', comment='材质')
+    source = Column('SOURCE', String(64), default='', comment='产地')
+    price = Column('PRICE', Numeric(16, 4), default=0, comment='价格')
+    fluctuating = Column('FLUCTUATING', Numeric(16, 4), default=0, comment='浮动')
+    date = Column('DATE', Date, comment='日期')
+
+    __table_args__ = (
+        UniqueConstraint(name, spec, material, source, date,  name='Idx_key'),
+        {'comment': '钢筋'},
+    )
+
+    @classmethod
+    def query_by_month(cls, query, year, month):
+        last_month_year, last_month = Helper.get_last_month(year, month)
+        query = query.filter(cls.date >= datetime.date(last_month_year, last_month, 26))
+        query = query.filter(cls.date <= datetime.date(year, month, 25))
+        return query
+
+    @classmethod
+    def get_items(cls, year, month, material, source='三钢闽光', name_in=('高线', '螺纹钢')):
+        query = cls.query
+        query = cls.query_by_month(query, year, month)
+        query = query.filter(cls.material == material)
+        query = query.filter(cls.source == source)
+        query = query.filter(cls.name.in_(name_in))
+        query = query.with_entities(cls.spec, cls.material, func.avg(cls.price))
+        query = query.group_by(cls.spec, cls.material)
+        result = query.all()
+
+        return result