36 lines
1.4 KiB
Python
36 lines
1.4 KiB
Python
from datetime import datetime
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from sqlalchemy import (Boolean, Column, DateTime, Float, ForeignKey, Index,
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Integer, String, Text, UniqueConstraint)
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from sqlalchemy.orm import relationship
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# Import Base from the central database module instead of creating a new one
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from app.core.database import Base
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from models.database.base import TimestampMixin
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class Stock(Base, TimestampMixin):
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__tablename__ = "stock"
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id = Column(Integer, primary_key=True, index=True)
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gtin = Column(
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String, index=True, nullable=False
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) # Foreign key relationship would be ideal
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location = Column(String, nullable=False, index=True)
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quantity = Column(Integer, nullable=False, default=0)
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reserved_quantity = Column(Integer, default=0) # For orders being processed
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vendor_id = Column(Integer, ForeignKey("vendors.id")) # Optional: vendor -specific stock
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# Relationships
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vendor = relationship("Shop")
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# Composite unique constraint to prevent duplicate GTIN-location combinations
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__table_args__ = (
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UniqueConstraint("gtin", "location", name="uq_stock_gtin_location"),
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Index(
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"idx_stock_gtin_location", "gtin", "location"
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), # Composite index for efficient queries
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)
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def __repr__(self):
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return f"<Stock(gtin='{self.gtin}', location='{self.location}', quantity={self.quantity})>"
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