main functions fix

services.py

@@ -198,22 +198,28 @@ class LotteryService:
         return result.scalar_one_or_none()
 
     @staticmethod
-    async def get_active_lotteries(session: AsyncSession) -> List[Lottery]:
+    async def get_active_lotteries(session: AsyncSession, limit: Optional[int] = None) -> List[Lottery]:
         """Получить список активных розыгрышей"""
-        result = await session.execute(
-            select(Lottery)
-            .where(Lottery.is_active == True, Lottery.is_completed == False)
-            .order_by(Lottery.created_at.desc())
-        )
+        query = select(Lottery).where(
+            Lottery.is_active == True, 
+            Lottery.is_completed == False
+        ).order_by(Lottery.created_at.desc())
+        
+        if limit:
+            query = query.limit(limit)
+        
+        result = await session.execute(query)
         return result.scalars().all()
 
     @staticmethod
-    async def get_all_lotteries(session: AsyncSession) -> List[Lottery]:
+    async def get_all_lotteries(session: AsyncSession, limit: Optional[int] = None) -> List[Lottery]:
         """Получить список всех розыгрышей"""
-        result = await session.execute(
-            select(Lottery)
-            .order_by(Lottery.created_at.desc())
-        )
+        query = select(Lottery).order_by(Lottery.created_at.desc())
+        
+        if limit:
+            query = query.limit(limit)
+        
+        result = await session.execute(query)
         return result.scalars().all()
 
     @staticmethod