from app.extensions import ma
from app.models.stock import StockBuy
from marshmallow import fields

class StockBuySchema(ma.SQLAlchemyAutoSchema):
    class Meta:
        model = StockBuy
        load_instance = True # 反序列化时自动创建模型实例
        include_fk = True    # 包含外键 material_id

    # 必须字段校验
    material_id = fields.Integer(required=True)
    qty_inbound = fields.Decimal(required=True, as_string=True)
    price_unit = fields.Decimal(missing=0, as_string=True)