diff --git a/inventory-backend/app/models/transaction.py b/inventory-backend/app/models/transaction.py
index 5e634eb..ffcad3c 100644
--- a/inventory-backend/app/models/transaction.py
+++ b/inventory-backend/app/models/transaction.py
@@ -7,27 +7,20 @@ class TransBorrow(db.Model):
 
     id = db.Column(db.Integer, primary_key=True)
     borrow_no = db.Column(db.String(100))
-
     sku = db.Column(db.String(100))
     source_table = db.Column(db.String(50))
     stock_id = db.Column(db.Integer)
     barcode = db.Column(db.String(100))
-
     quantity = db.Column(db.Numeric(19, 4))
-
-    # 借出信息
     borrower_name = db.Column(db.String(100))
     borrow_time = db.Column(db.DateTime, default=datetime.now)
-    borrow_signature = db.Column(db.Text)  # 借用人签字
+    borrow_signature = db.Column(db.Text)
     expected_return_time = db.Column(db.DateTime)
-
-    # 归还信息
     is_returned = db.Column(db.Boolean, default=False)
     return_time = db.Column(db.DateTime)
-    return_operator = db.Column(db.String(100))  # 库管
-    return_signature = db.Column(db.Text)  # 库管签字
-    return_location = db.Column(db.String(100))  # 归还库位
-
+    return_operator = db.Column(db.String(100))
+    return_signature = db.Column(db.Text)
+    return_location = db.Column(db.String(100))
     status = db.Column(db.String(20), default='borrowed')
     remark = db.Column(db.Text)
 
@@ -36,20 +29,21 @@ class TransBorrow(db.Model):
             'id': self.id,
             'borrow_no': self.borrow_no,
             'sku': self.sku,
+            'source_table': self.source_table,
+            'stock_id': self.stock_id,
             'barcode': self.barcode,
-            'quantity': float(self.quantity) if self.quantity else 0,
+            'quantity': float(self.quantity) if self.quantity is not None else None,
             'borrower_name': self.borrower_name,
-            'borrow_time': self.borrow_time.strftime('%Y-%m-%d %H:%M') if self.borrow_time else '',
+            'borrow_time': self.borrow_time.strftime('%Y-%m-%d %H:%M') if self.borrow_time else None,
             'borrow_signature': self.borrow_signature,
-            'expected_return_time': self.expected_return_time.strftime(
-                '%Y-%m-%d %H:%M') if self.expected_return_time else '',
+            'expected_return_time': self.expected_return_time.strftime('%Y-%m-%d %H:%M') if self.expected_return_time else None,
             'is_returned': self.is_returned,
-            'return_time': self.return_time.strftime('%Y-%m-%d %H:%M') if self.return_time else '',
+            'return_time': self.return_time.strftime('%Y-%m-%d %H:%M') if self.return_time else None,
             'return_operator': self.return_operator,
             'return_signature': self.return_signature,
             'return_location': self.return_location,
             'status': self.status,
-            'remark': self.remark
+            'remark': self.remark,
         }
 
 
@@ -60,37 +54,38 @@ class TransRepair(db.Model):
     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)
-    repair_manager = db.Column(db.String(100))
-    
-    cost_price = db.Column(db.Numeric(10, 2))
-    sale_price = db.Column(db.Numeric(10, 2))
-    
-    arrival_date = db.Column(db.Date)
-    shipping_date = db.Column(db.Date)
-    
-    created_at = db.Column(db.DateTime, default=datetime.now)
-    updated_at = db.Column(db.DateTime, default=datetime.now, onupdate=datetime.now)
-    
+    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,
             'source_table': self.source_table,
             'stock_id': self.stock_id,
+            'arrival_date': self.arrival_date.strftime('%Y-%m-%d') if self.arrival_date else None,
+            'expected_repair_time': self.expected_repair_time,
+            'shipping_date': self.shipping_date.strftime('%Y-%m-%d') if self.shipping_date else None,
+            'is_self_made': self.is_self_made,
+            'related_product_id': self.related_product_id,
+            'related_contract_id': self.related_contract_id,
+            'repair_manager': self.repair_manager,
             'fault_description': self.fault_description,
             'repair_result': self.repair_result,
-            'repair_manager': self.repair_manager,
             'cost_price': float(self.cost_price) if self.cost_price is not None else None,
             'sale_price': float(self.sale_price) if self.sale_price is not None else None,
-            'arrival_date': self.arrival_date.strftime('%Y-%m-%d') if self.arrival_date else None,
-            'shipping_date': self.shipping_date.strftime('%Y-%m-%d') if self.shipping_date else None,
-            'created_at': self.created_at.strftime('%Y-%m-%d %H:%M:%S') if self.created_at else None,
-            'updated_at': self.updated_at.strftime('%Y-%m-%d %H:%M:%S') if self.updated_at else None,
         }
 
+
 class TransScrap(db.Model):
     __tablename__ = 'trans_scrap'
 
@@ -98,19 +93,15 @@ class TransScrap(db.Model):
     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), default='pending')
-    cost_at_scrap = db.Column(db.Numeric(10, 2))
-    total_loss = db.Column(db.Numeric(10, 2))
-    operation_time = db.Column(db.DateTime, default=datetime.now)
-    
-    created_at = db.Column(db.DateTime, default=datetime.now)
-    updated_at = db.Column(db.DateTime, default=datetime.now, onupdate=datetime.now)
-    
+    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,
@@ -120,11 +111,9 @@ class TransScrap(db.Model):
             'quantity': float(self.quantity) if self.quantity is not None else None,
             'reason': self.reason,
             'operator_name': self.operator_name,
+            'operation_time': self.operation_time.strftime('%Y-%m-%d %H:%M:%S') if self.operation_time else None,
             'approver_name': self.approver_name,
             'approval_status': self.approval_status,
             'cost_at_scrap': float(self.cost_at_scrap) if self.cost_at_scrap is not None else None,
             'total_loss': float(self.total_loss) if self.total_loss is not None else None,
-            'operation_time': self.operation_time.strftime('%Y-%m-%d %H:%M:%S') if self.operation_time else None,
-            'created_at': self.created_at.strftime('%Y-%m-%d %H:%M:%S') if self.created_at else None,
-            'updated_at': self.updated_at.strftime('%Y-%m-%d %H:%M:%S') if self.updated_at else None,
         }