сохранение перед исправлениями

front/src/pages/components/SessionItem.jsx

@@ -2,7 +2,7 @@ import React, { useEffect, useState } from "react"
 import MyButton from './MyButton'
 
 export default function SessionItem(props) {
-    const date = new Date(props.item.timestamp).toLocaleString('RU-ru')
+    const date = new Date(props.item.timestamp).toLocaleDateString('ru-RU')
     
     return (
         <tr>

src/main/java/com/labwork1/app/student/repository/OrderRepository.java

@@ -3,14 +3,10 @@ package com.labwork1.app.student.repository;
 import com.labwork1.app.student.model.Order;
 import com.labwork1.app.student.model.OrderSession;
 import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 
 public interface OrderRepository extends JpaRepository<Order, Long> {
     @Query("Select os from OrderSession os where os.order.id = :orderId and os.session.id = :sessionId")
     OrderSession getOrderSession(@Param("orderId") Long orderId, @Param("sessionId") Long sessionId);
-    @Modifying
-    @Query("delete from OrderSession os where os.order.id = :orderId and os.session.id = :sessionId")
-    void deleteSessionInOrder(@Param("orderId") Long orderId, @Param("sessionId") Long sessionId);
 }

src/main/java/com/labwork1/app/student/repository/SessionRepository.java

@@ -3,10 +3,13 @@ package com.labwork1.app.student.repository;
 import com.labwork1.app.student.model.Session;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 import java.util.List;
 
 public interface SessionRepository extends JpaRepository<Session, Long> {
     @Query("Select s from Session s where s.capacity > 0")
     List<Session> findAllSessionsWithCapacity();
+    @Query("Select sum(os.count) from OrderSession os where os.session.id = :sessionId")
+    Integer getCapacity(@Param("sessionId") Long sessionId);
 }

src/main/java/com/labwork1/app/student/service/OrderService.java

@@ -46,8 +46,6 @@ public class OrderService {
                     currentSession.getCapacity(), count));
         }
         currentSession.setCapacity(currentSession.getCapacity() - count);
-        /*final Session updatedSession = sessionService.updateSession(currentSession.getId(),
-                currentSession.getPrice(), currentSession.getCapacity() - count);*/
         if (currentOrderSession == null) {
             currentOrder.addSession(new OrderSession(currentOrder, currentSession, count));
         }