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inventory-backend/app/models/transaction.py

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+from app.extensions import db
+from datetime import datetime
+
+# 1. 借用表
+class TransBorrow(db.Model):
+    __tablename__ = 'trans_borrow'
+    id = db.Column(db.Integer, primary_key=True)
+    sku = db.Column(db.String(100))
+    source_table = db.Column(db.String(50))
+    stock_id = db.Column(db.Integer)
+    quantity = db.Column(db.Numeric(19, 4))
+    borrow_time = db.Column(db.DateTime, default=datetime.now)
+    expected_return_time = db.Column(db.DateTime)
+    borrower_name = db.Column(db.String(100))
+    actual_return_time = db.Column(db.DateTime)
+    approver_name = db.Column(db.String(100))
+    status = db.Column(db.String(20))
+
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'sku': self.sku,
+            'borrower_name': self.borrower_name,
+            'status': self.status
+        }
+
+# 2. 维修表
+class TransRepair(db.Model):
+    __tablename__ = 'trans_repair'
+    id = db.Column(db.Integer, primary_key=True)
+    sku = db.Column(db.String(100))
+    source_table = db.Column(db.String(50))
+    stock_id = db.Column(db.Integer)
+    arrival_date = db.Column(db.Date)
+    expected_repair_time = db.Column(db.String(100))
+    shipping_date = db.Column(db.Date)
+    is_self_made = db.Column(db.Boolean, default=False)
+    related_product_id = db.Column(db.Integer)
+    related_contract_id = db.Column(db.String(100))
+    repair_manager = db.Column(db.String(100))
+    fault_description = db.Column(db.Text)
+    repair_result = db.Column(db.Text)
+    cost_price = db.Column(db.Numeric(19, 4))
+    sale_price = db.Column(db.Numeric(19, 4))
+
+    def to_dict(self):
+        return {'id': self.id, 'sku': self.sku, 'status': 'repaired' if self.repair_result else 'pending'}
+
+# 3. 报废表
+class TransScrap(db.Model):
+    __tablename__ = 'trans_scrap'
+    id = db.Column(db.Integer, primary_key=True)
+    sku = db.Column(db.String(100))
+    source_table = db.Column(db.String(50))
+    stock_id = db.Column(db.Integer)
+    quantity = db.Column(db.Numeric(19, 4))
+    reason = db.Column(db.Text)
+    operator_name = db.Column(db.String(100))
+    operation_time = db.Column(db.DateTime, default=datetime.now)
+    approver_name = db.Column(db.String(100))
+    approval_status = db.Column(db.String(20))
+    cost_at_scrap = db.Column(db.Numeric(19, 4))
+    total_loss = db.Column(db.Numeric(19, 4))
+
+    def to_dict(self):
+        return {'id': self.id, 'sku': self.sku, 'total_loss': float(self.total_loss) if self.total_loss else 0}