Ого, вау сделал отчет

frontend/vue-project/src/pages/groups.vue

@@ -2,6 +2,7 @@
     <div class="container mt-4">
         <h1 class="text-center mb-4">Group Table</h1>
         <button class="btn btn-primary mr-2" @click="openModal('create')">Добавить</button>
+        <button class="btn btn-primary mr-2" @click="openReport()">Отчет</button>
         <table class="table table-striped">
             <thead>
             <tr>
@@ -36,6 +37,41 @@
             </tbody>
         </table>
     </div>
+    <!--Форма для отчета   -->
+    <div class="modal" tabindex="-1" id="openReport">
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title">Отчет</h5>
+                </div>
+                <div class="modal-body">
+                    <form>
+                        <table class="table table-striped">
+                            <thead>
+                            <tr>
+                                <th>Группа</th>
+                                <th>Студенты</th>
+                            </tr>
+                            </thead>
+                            <tbody>
+                            <tr v-for="[key, value] in Object.entries(getAllInfo)" :key="key">
+                                <td>{{ key }}</td>
+                                <td>
+                                    <ul>
+                                        <li v-for="book in value" :key="book">{{ book }}</li>
+                                    </ul>
+                                </td>
+                            </tr>
+                            </tbody>
+                        </table>
+                    </form>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-secondary" data-bs-dismiss="editModal" @click="closeReport()">Закрыть</button>
+                </div>
+            </div>
+        </div>
+    </div>
     <!--Форма для привязки предмета и групп    -->
     <div class="modal" tabindex="-1" id="openModalForAddSubjects">
         <div class="modal-dialog">
@@ -206,6 +242,7 @@ export default {
     created() {
         this.getGroups();
         this.getSubjects();
+        this.getAll();
     },
     data() {
         return{
@@ -219,9 +256,20 @@ export default {
             groupId: undefined,
             selectedSubjects: [],
             subjectsInGroup: [],
+            getAllInfo: new Object()    ,
         }
     },
     methods: {
+        getAll(){
+            axios.get(this.URL + "group/getAll")
+                .then(response => {
+                    this.getAllInfo = response.data;
+                    console.log(response.data);
+                })
+                .catch(error => {
+                    console.log(error);
+                });
+        },
         getSubjectsInGroup(id){
             axios.get(this.URL + `group/${id}/getAllSubjects`)
                 .then(response => {
@@ -314,6 +362,12 @@ export default {
         CloseModalForAddStudents() {
             document.getElementById("ModalForAddStudents").style.display = "none";
         },
+        openReport() {
+            document.getElementById("openReport").style.display = "block";
+        },
+        closeReport() {
+            document.getElementById("openReport").style.display = "none";
+        },
         saveStudents(id) {
             axios.post(this.URL + `group/${id}/addStudents`,   this.selectedStudents)
                 .then(() => {

src/main/java/ru/IP_LabWorks/IP/University/Contoller/REST/GroupController.java

@@ -10,6 +10,7 @@ import ru.IP_LabWorks.IP.University.Model.Subject;
 import ru.IP_LabWorks.IP.University.Service.GroupService;
 
 import java.util.List;
+import java.util.Map;
 
 @RestController
 @RequestMapping("/group")
@@ -79,11 +80,8 @@ public class GroupController {
     public void addSubjectToGroup(@PathVariable Long id, @RequestBody @Valid List<Long> subjectIds){
         groupService.addSubjectToGroup(id, subjectIds);
     }
-
-
-//    @PostMapping("/{id}/student")
-//    public StudentDTO setStudentToGroup(@PathVariable Long id,
-//                                        @RequestParam("studentId") Long studentId) {
-//        return new StudentDTO(groupService.addStudentToGroup(id, studentId));
-//    }
+    @GetMapping("/getAll")
+    public Map<String, List<String>> getAll(){
+        return groupService.getAll();
+    }
 }

src/main/java/ru/IP_LabWorks/IP/University/Repository/GroupRepository.java

@@ -1,7 +1,15 @@
 package ru.IP_LabWorks.IP.University.Repository;
 
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
 import ru.IP_LabWorks.IP.University.Model.Group;
 
+import java.util.List;
+
 public interface GroupRepository extends JpaRepository<Group, Long> {
+    @Query("select g.name as group, s.name as students " +
+            "from Group g " +
+            "join g.students s " +
+            "group by g.id, g.name, s.name")
+    List<Object[]> getAll();
 }

src/main/java/ru/IP_LabWorks/IP/University/Service/GroupService.java

@@ -12,7 +12,9 @@ import ru.IP_LabWorks.IP.University.Service.NotFoundException.GroupNotFoundExcep
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 @Service
 public class GroupService {
@@ -126,30 +128,14 @@ public class GroupService {
         groupRepository.save(currentGroup);
     }
 
-/*    @Transactional
-    public Group addStudentToGroup(Long groupId, Long studentId) {
-        Group group = findGroup(groupId);
-        Student student = studentService.findStudent(studentId);
-        if (group == null || student == null) {
-            throw new EntityNotFoundException("Group or Student not found");
-        }
-        group.setStudent(student);
-        return group;
-    }*/
-//
-//    @Transactional
-//    public void removeStudentFromGroup(Long groupId, Long studentId) {
-//        Group group = findGroup(groupId);
-//        Student student = em.find(Student.class, studentId);
-//        group.getStudents().remove(student);
-//    }
-//
-//    @Transactional(readOnly = true)
-//    public List<Student> findStudentsInGroup(Long groupId) {
-//        Group group = findGroup(groupId);
-//        if (group == null) {
-//            throw new EntityNotFoundException("Group not found");
-//        }
-//        return group.getStudents();
-//    }
+    @Transactional
+    public Map<String, List<String>> getAll(){
+        return groupRepository.getAll().stream()
+                .collect(
+                        Collectors.groupingBy(
+                                o -> (String) o[0],
+                                Collectors.mapping( o -> (String) o[1], Collectors.toList() )
+                        )
+                );
+    }
 }