48 lines
2.0 KiB
Python
48 lines
2.0 KiB
Python
from sqlalchemy import Column, String, Integer, Float, ForeignKey, Text, Boolean
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from sqlalchemy.orm import relationship
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from app.models.base import BaseModel
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class Item(BaseModel):
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"""Model for inventory items."""
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sku = Column(String, unique=True, index=True, nullable=False)
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name = Column(String, index=True, nullable=False)
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description = Column(Text, nullable=True)
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quantity = Column(Integer, default=0, nullable=False)
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reorder_level = Column(Integer, default=5, nullable=False)
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unit_price = Column(Float, nullable=False)
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category_id = Column(Integer, ForeignKey('categorys.id'), nullable=True)
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supplier_id = Column(Integer, ForeignKey('suppliers.id'), nullable=True)
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location = Column(String, nullable=True)
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is_active = Column(Boolean, default=True)
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# Relationships
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category = relationship("Category", back_populates="items")
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supplier = relationship("Supplier", back_populates="items")
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transaction_items = relationship("TransactionItem", back_populates="item")
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class TransactionType:
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PURCHASE = "purchase"
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SALE = "sale"
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ADJUSTMENT = "adjustment"
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RETURN = "return"
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TRANSFER = "transfer"
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class Transaction(BaseModel):
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"""Model for inventory transactions (purchases, sales, adjustments, etc.)."""
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transaction_type = Column(String, nullable=False)
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reference_number = Column(String, nullable=True)
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notes = Column(Text, nullable=True)
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# Relationships
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items = relationship("TransactionItem", back_populates="transaction")
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class TransactionItem(BaseModel):
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"""Model for items involved in a transaction."""
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transaction_id = Column(Integer, ForeignKey('transactions.id'), nullable=False)
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item_id = Column(Integer, ForeignKey('items.id'), nullable=False)
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quantity = Column(Integer, nullable=False)
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unit_price = Column(Float, nullable=False)
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# Relationships
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transaction = relationship("Transaction", back_populates="items")
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item = relationship("Item", back_populates="transaction_items") |