Ого, вау еще и 5 сделал

# Conflicts:
#	data.mv.db
#	src/main/java/ru/IP_LabWorks/IP/University/Contoller/REST/StudentController.java

frontend/vue-project/src/models/Group.js

@@ -2,5 +2,6 @@ export default class Group{
     constructor(data) {
         this.id = data?.id;
         this.name = data?.name;
+        this.subjectIds = data?.subjectIds;
     }
 }

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

@@ -2,34 +2,142 @@
     <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>
                 <th>Имя</th>
-                <th></th>
+                <th>Действия</th>
+                <th>Работа с группой</th>
+                <th>Работа с предметами</th>
             </tr>
             </thead>
             <tbody>
             <tr v-for="grp in groups" :key="grp.id">
                 <td>{{ grp.name }}</td>
                 <td>
-                    <td>
+                    <div class="d-flex flex-column">
-                        <button class="btn btn-primary mr-2" @click="openModal('edit', grp)">Изменить</button>
+                        <button class="btn btn-primary mb-2" @click="openModal('edit', grp)">Изменить</button>
-                    </td>
+                        <button class="btn btn-danger mb-2" @click="deleteGroup(grp.id)">Удалить</button>
-                    <td>
+                    </div>
-                        <button class="btn btn-danger" @click="deleteGroup(grp.id)">Удалить</button>
+                </td>
-                    </td>
+                <td>
-                    <td>
+                    <div class="d-flex flex-column">
-                        <button class="btn btn-primary mr-2" @click="OpenModelForStudents();getStudentsFromGroup(grp.id)">Просмотр студентов</button>
+                        <button class="btn btn-primary mb-2" @click="OpenModelForStudents(); getStudentsFromGroup(grp.id)">Просмотр студентов</button>
-                    </td>
+                        <button class="btn btn-primary mb-2" @click="OpenModelForAddStudents(grp); getStudentsFromUndefinedGroup()">Добавление студентов в группу</button>
-                    <td>
+                    </div>
-                        <button class="btn btn-primary mr-2" @click="OpenModelForSubjects();getSubjects(grp.id)">Просмотр предметов</button>
+                </td>
-                    </td>
+                <td>
+                    <div class="d-flex flex-column">
+                        <button class="btn btn-primary mb-2" @click="OpenModelForSubjects(); getSubjectsInGroup(grp.id)">Просмотр предметов</button>
+                        <button class="btn btn-primary mb-2" @click="OpenModelForAddSubjects('edit', grp);">Добавление предметов в группу</button>
+                    </div>
                 </td>
             </tr>
             </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">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title">Добавление предметов</h5>
+                </div>
+                <div class="modal-body">
+                    <form>
+                        <div class="form-group">
+                            <label for="name">Имя:</label>
+                            <input readonly type="text" class="form-control" id="name" name="name" v-model="group.name">
+                        </div>
+                        <div class="form-group">
+                            <label for="name">Выберите предметы для добавления:</label>
+                            <ul class="list-group">
+                                <li class="list-group-item" v-for="subject in subjects" :key="subject.id">
+                                    <div class="form-check">
+                                        <input class="form-check-input" type="checkbox" v-model="selectedSubjects" :value="subject.id" v-bind:checked="open.includes(subject.id)" id="groupCheck{{ subject.id }}">
+                                        <label class="form-check-label" for="groupCheck{{ subject.id }}">{{ subject.name }}</label>
+                                    </div>
+                                </li>
+                            </ul>
+                        </div>
+                    </form>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-secondary" data-bs-dismiss="editModal" @click="closeModalForAddSubjects()">Закрыть</button>
+                    <button type="button" class="btn btn-primary" @click="addSubjectToGroup(group.id, selectedSubjects)">Добавить</button>
+                </div>
+            </div>
+        </div>
+    </div>
+    <!--    Модальное окно для добавления студентов в группу-->
+    <div class="modal" tabindex="-1" id="ModalForAddStudents">
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title">Добавление студентов в группу</h5>
+                </div>
+                <div class="modal-body">
+                    <form>
+                        <div class="form-group">
+                            <label for="name">Имя:</label>
+                            <input type="text" class="form-control" id="name" name="name" v-model="group.name">
+                        </div>
+                        <div class="form-group">
+                            <label for="name">Выберите студентов для добавления:</label>
+                            <ul class="list-group">
+                                <li class="list-group-item" v-for="student in students" :key="student.id">
+                                    <div class="form-check">
+                                        <input class="form-check-input" type="checkbox" :id="'studentCheck' + student.id" :value="student.id" v-model="selectedStudents">
+                                        <label class="form-check-label" :for="'studentCheck' + student.id">{{ student.name }}</label>
+                                    </div>
+                                </li>
+                            </ul>
+                        </div>
+                    </form>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-secondary" data-bs-dismiss="editModal" @click="CloseModalForAddStudents()">Закрыть</button>
+                    <button type="button" class="btn btn-primary" @click="saveStudents(group.id)">Сохранить</button>
+                </div>
+            </div>
+        </div>
+    </div>
 <!--    Модальное окно для добавления и изменения-->
     <div class="modal" tabindex="-1" id="editModal">
         <div class="modal-dialog">
@@ -68,12 +176,18 @@
                                 <tr>
                                     <th>Имя</th>
                                     <th>Дата рождения</th>
+                                    <th></th>
                                 </tr>
                                 </thead>
                                 <tbody>
                                 <tr v-for="stud in students" :key="stud.id">
                                     <td>{{ stud.name }}</td>
                                     <td>{{ stud.birthDate }}</td>
+                                    <td>
+                                        <td>
+                                            <button class="btn btn-danger mr-2" @click="deleteStudentFromGroup(stud.id)">Удалить</button>
+                                        </td>
+                                    </td>
                                 </tr>
                                 </tbody>
                             </table>
@@ -103,7 +217,7 @@
                                 </tr>
                                 </thead>
                                 <tbody>
-                                <tr v-for="sbjct in subjects" :key="sbjct.id">
+                                <tr v-for="sbjct in subjectsInGroup" :key="sbjct.id">
                                     <td>{{ sbjct.name }}</td>
                                 </tr>
                                 </tbody>
@@ -123,9 +237,12 @@ import 'axios';
 import axios from "axios";
 import Group from "@/models/Group";
 import Student from "@/models/Student";
+import Subject from "@/models/Subject";
 export default {
     created() {
         this.getGroups();
+        this.getSubjects();
+        this.getAll();
     },
     data() {
         return{
@@ -134,13 +251,29 @@ export default {
             group: new Group(),
             students: [],
             subjects: [],
+            selectedStudents: [],
+            open: [],
+            groupId: undefined,
+            selectedSubjects: [],
+            subjectsInGroup: [],
+            getAllInfo: new Object()    ,
         }
     },
     methods: {
-        getSubjects(id){
+        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/${id}/getAllSubjects`)
                 .then(response => {
-                    this.subjects = response.data;
+                    this.subjectsInGroup = response.data;
                     console.log(response.data);
                 })
                 .catch(error => {
@@ -200,6 +333,7 @@ export default {
             document.getElementById("editModal").style.display = "none";
         },
         getStudentsFromGroup(groupId){
+            this.selectedStudents = [];
             axios.get(this.URL + `group/${groupId}/students`)
                 .then(response => {
                     this.students = response.data;
@@ -221,6 +355,93 @@ export default {
         closeModelForSubjects() {
             document.getElementById("ModelForSubjects").style.display = "none";
         },
+        OpenModelForAddStudents(group) {
+            this.group = { ...group };
+            document.getElementById("ModalForAddStudents").style.display = "block";
+        },
+        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/${id}/addStudents`,   this.selectedStudents)
+                .then(() => {
+                    this.getStudentsFromGroup(id);
+                    this.CloseModalForAddStudents();
+                    console.log(this.students);
+                })
+                .catch(error => {
+                    console.log(error);
+                });
+        },
+        getStudentsFromUndefinedGroup(){
+            axios.get(this.URL + `group/getStudentsUndefined`)
+                .then(response => {
+                    this.students = response.data;
+                    console.log(response.data);
+                })
+                .catch(error => {
+                    console.log(error);
+                });
+        },
+        deleteStudentFromGroup(id){
+            axios.delete(this.URL + `group/deleteStudentFromGroup/${id}`)
+                .then(() =>{
+                    this.getStudentsFromGroup();
+                })
+                .catch(error => {
+                console.log(error);
+            });
+        },
+        OpenModelForAddSubjects(status, group = null) {
+            if (status === "create") {
+                this.group = new Group();
+                this.group.status = "create";
+            } else if (status === "edit" && group) {
+                this.group = { ...group };
+                this.group.status = "edit";
+            }
+            this.open = this.group.subjectIds ? [...this.group.subjectIds] : []; // Создаём новый массив, чтобы избежать проблем с ссылками
+            this.loadSelectedSubjects(); // Загрузка выбранных групп при открытии модального окна
+            document.getElementById("openModalForAddSubjects").style.display = "block";
+        },
+        closeModalForAddSubjects() {
+            document.getElementById("openModalForAddSubjects").style.display = "none";
+            this.open = [...this.selectedSubjects]; // Обновление массива open значениями из selectedGroups
+            this.selectedSubjects = []; // Сброс выбранных групп
+            this.group = new Group(); // Сброс текущего предмета при закрытии модального окна
+        },
+        loadSelectedSubjects() {
+            // Загрузка выбранных групп из массива open
+            this.selectedSubjects = [...this.open];
+        },
+        addSubjectToGroup(id, list) {
+            axios
+                .post(this.URL + `group/${id}/addSubjectToGroup`, list)
+                .then(() => {
+                    this.closeModalForAddSubjects();
+                    this.getGroups(); // Обновляем список предметов после успешного добавления
+                    this.open = [...this.selectedSubjects]; // Обновляем массив выбранных групп
+                })
+                .catch((error) => {
+                    console.log(error);
+                });
+        },
+        getSubjects(){
+            axios.get(this.URL + "subject")
+                .then(response => {
+                    this.subjects = response.data;
+                    console.log(response.data);
+                })
+                .catch(error => {
+                    console.log(error);
+                });
+        },
     }
 }
 </script>

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

@@ -15,7 +15,7 @@
             <tr v-for="stud in students" :key="stud.id">
                 <td>{{ stud.name }}</td>
                 <td>{{ stud.birthDate }}</td>
-                <td>{{ stud.groupName }}</td>
+                <td>{{stud.groupName || 'No Group'}}</td>
                 <td>
                     <td>
                         <button class="btn btn-primary mr-2" @click="openModal('edit', stud)">Изменить</button>
@@ -44,14 +44,6 @@
                             <label for="birthdate">Дата рождения:</label>
                             <input type="date" class="form-control" id="birthdate" name="birthdate" v-model="editedStudent.birthDate">
                         </div>
-                        <div class="form-group">
-                            <label for="group">Группа:</label>
-                            <select v-model="editedStudent.groupId" class="form-control">
-                                <option v-for="(group, index) in groups" :key="index" :value="group.id">
-                                    {{ group.name }}
-                                </option>
-                            </select>
-                        </div>
                     </form>
                 </div>
                 <div class="modal-footer">
@@ -98,8 +90,8 @@ export default {
                     console.log(error);
                 });
         },
-        getGroups(){
+        getGroups() {
-            axios.get(this.URL + "group")
+            axios.get(this.URL + "student/groups")
                 .then(response => {
                     this.groups = response.data;
                     console.log(response.data);
@@ -109,6 +101,8 @@ export default {
                 });
         },
         addStudent(student) {
+            console.log(student);
+            student.group = null;
             console.log(student);
             axios
                 .post(this.URL + "student", student)

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

@@ -19,9 +19,6 @@
                     <td>
                         <button class="btn btn-danger" @click="deleteSubject(sbjct.id)">Удалить</button>
                     </td>
-                    <td>
-                        <button class="btn btn-primary mr-2" @click="openModalForAdd('edit', sbjct);">Добавить предметы в группы</button>
-                    </td>
                 </td>
             </tr>
             </tbody>
@@ -50,39 +47,6 @@
             </div>
         </div>
     </div>
-<!--Форма для привязки предмета и групп    -->
-    <div class="modal" tabindex="-1" id="openModalForAdd">
-        <div class="modal-dialog">
-            <div class="modal-content">
-                <div class="modal-header">
-                    <h5 class="modal-title">Добавление групп</h5>
-                </div>
-                <div class="modal-body">
-                    <form>
-                        <div class="form-group">
-                            <label for="name">Имя:</label>
-                            <input readonly type="text" class="form-control" id="name" name="name" v-model="subject.name">
-                        </div>
-                        <div class="form-group">
-                            <label for="name">Выберите группы для добавления:</label>
-                            <ul class="list-group">
-                                <li class="list-group-item" v-for="group in groups" :key="group.id">
-                                    <div class="form-check">
-                                        <input class="form-check-input" type="checkbox" v-model="selectedGroups" :value="group.id" v-bind:checked="open.includes(group.id)" id="groupCheck{{ group.id }}">
-                                        <label class="form-check-label" for="groupCheck{{ group.id }}">{{ group.name }}</label>
-                                    </div>
-                                </li>
-                            </ul>
-                        </div>
-                    </form>
-                </div>
-                <div class="modal-footer">
-                    <button type="button" class="btn btn-secondary" data-bs-dismiss="editModal" @click="closeModalForAdd()">Закрыть</button>
-                    <button type="button" class="btn btn-primary" @click="addSubjectToGroup(subject.id, selectedGroups)">Добавить</button>
-                </div>
-            </div>
-        </div>
-    </div>
 </template>
 <script>
 import 'axios';
@@ -92,40 +56,15 @@ import Group from "@/models/Group";
 export default {
     created() {
         this.getSubjects();
-        this.getGroups();
-        this.getAllSubjectGroup();
     },
-    mounted() {
-        const addModal = document.getElementById('editModal');
-        addModal.addEventListener('shown.bs.modal', function () {
-        })
-        const openModalForAdd = document.getElementById('openModalForAdd');
-        openModalForAdd.addEventListener('shown.bs.modal', function () {
-        })
-    },
-
     data() {
         return{
             subjects: [],
             URL: "http://localhost:8080/",
             subject: new Subject(),
-            groups: [],
-            selectedGroups: [],
-            AllSubjectGroup: [],
-            open: [],
         }
     },
     methods: {
-        getAllSubjectGroup(){
-            axios.get(this.URL + "subject/getAllSubjectGroup")
-                .then(response => {
-                    this.AllSubjectGroup = response.data;
-                    console.log(response.data);
-                })
-                .catch(error => {
-                    console.log(error);
-                });
-        },
         getSubjects(){
             axios.get(this.URL + "subject")
                 .then(response => {
@@ -164,27 +103,6 @@ export default {
                 })
             this.closeModal();
         },
-        openModalForAdd(status, subject = null) {
-            if (status === "create") {
-                this.subject = new Subject();
-                this.subject.status = "create";
-            } else if (status === "edit" && subject) {
-                this.subject = { ...subject };
-                this.subject.status = "edit";
-            }
-            this.open = this.subject.groupIds ? [...this.subject.groupIds] : []; // Создаём новый массив, чтобы избежать проблем с ссылками
-            this.loadSelectedGroups(); // Загрузка выбранных групп при открытии модального окна
-            document.getElementById("openModalForAdd").style.display = "block";
-        },
-
-        closeModalForAdd() {
-            document.getElementById("openModalForAdd").style.display = "none";
-            this.open = [...this.selectedGroups]; // Обновление массива open значениями из selectedGroups
-            this.selectedGroups = []; // Сброс выбранных групп
-            this.subject = new Subject(); // Сброс текущего предмета при закрытии модального окна
-        },
-
-
         openModal(status, subject = null) {
             if (status === "create") {
                 this.subject = new Subject();
@@ -198,38 +116,6 @@ export default {
         closeModal() {
             document.getElementById("editModal").style.display = "none";
         },
-        getGroups(){
-            axios.get(this.URL + "group")
-                .then(response => {
-                    this.groups = response.data;
-                    console.log(response.data);
-                })
-                .catch(error => {
-                    console.log(error);
-                });
-        },
-        saveSelectedGroups() {
-            // Сохранение выбранных групп в массив open
-            this.open = [...this.selectedGroups];
-        },
-
-        loadSelectedGroups() {
-            // Загрузка выбранных групп из массива open
-            this.selectedGroups = [...this.open];
-        },
-
-        addSubjectToGroup(id, list) {
-            axios
-                .post(this.URL + `subject/${id}/addSubjectToGroup`, list)
-                .then(() => {
-                    this.closeModalForAdd();
-                    this.getSubjects(); // Обновляем список предметов после успешного добавления
-                    this.open = [...this.selectedGroups]; // Обновляем массив выбранных групп
-                })
-                .catch((error) => {
-                    console.log(error);
-                });
-        },
     }
 }
 </script>

src/main/java/ru/IP_LabWorks/IP/University/Contoller/DTO/GroupDTO.java

@@ -2,16 +2,21 @@ package ru.IP_LabWorks.IP.University.Contoller.DTO;
 
 import ru.IP_LabWorks.IP.University.Model.Group;
 
+import java.util.List;
+
 public class GroupDTO {
     private long id;
     private String name;
 
+    private List<Long> subjectIds;
+
     public GroupDTO(){
 
     }
     public GroupDTO(Group group){
         this.id = group.getId();
         this.name = group.getName();
+        this.subjectIds = group.getSubjectIds();
     }
 
     public Long getId(){
@@ -29,4 +34,8 @@ public class GroupDTO {
     public void setName(String name){
         this.name = name;
     }
+
+    public List<Long> getSubjectIds(){
+        return subjectIds;
+    }
 }

src/main/java/ru/IP_LabWorks/IP/University/Contoller/DTO/StudentDTO.java

@@ -20,8 +20,9 @@ public class StudentDTO {
         this.id = student.getId();
         this.name = student.getName();
         this.birthDate = student.getBirthDate();
-        this.groupName = student.getGroup().getName();
+        if(student.getGroup() != null){
-        this.groupId = student.getGroup().getId();
+            this.groupName = student.getGroup().getName();
+        }
     }
 
     public String getGroupName() {

src/main/java/ru/IP_LabWorks/IP/University/Contoller/MVC/GroupMvcController.java

@@ -1,28 +1,29 @@
 package ru.IP_LabWorks.IP.University.Contoller.MVC;
 
 import jakarta.validation.Valid;
-import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
 import ru.IP_LabWorks.IP.University.Contoller.DTO.GroupDTO;
-import ru.IP_LabWorks.IP.University.Contoller.DTO.StudentDTO;
 import ru.IP_LabWorks.IP.University.Model.Student;
 import ru.IP_LabWorks.IP.University.Model.Subject;
 import ru.IP_LabWorks.IP.University.Service.GroupService;
-import ru.IP_LabWorks.IP.University.Service.StudentService;
+import ru.IP_LabWorks.IP.University.Service.SubjectService;
 
 import java.util.List;
+import java.util.stream.Collectors;
 
 @Controller
 @RequestMapping("/group")
 public class GroupMvcController {
     private final GroupService groupService;
+    private final SubjectService subjectService;
 
-    public GroupMvcController(GroupService groupService)
+    public GroupMvcController(GroupService groupService, SubjectService subjectService)
     {
         this.groupService = groupService;
+        this.subjectService = subjectService;
     }
 
     @GetMapping
@@ -69,6 +70,7 @@ public class GroupMvcController {
         return "redirect:/group";
     }
 
+
     @GetMapping("/students/{id}")
     public String getStudentsFromGroup(@PathVariable Long id, Model model) {
         List<Student> students = groupService.getStudentFromGroup(id);
@@ -82,4 +84,45 @@ public class GroupMvcController {
         model.addAttribute("subjects", subjects);
         return "view-subjects";
     }
+
+    @GetMapping("/getStudentsUndefined/{id}")
+    public String getStudentsFromUndefinedGroup(@PathVariable Long id, Model model){
+        List<Student> students = groupService.getStudentsUndefined();
+        model.addAttribute("undefinedStudents", students);
+        model.addAttribute("groupId", id);
+        model.addAttribute("groupDTO", new GroupDTO(groupService.findGroup(id)));
+        return "add-students-to-group";
+    }
+
+    @PostMapping("/addStudents/{id}")
+    public String addStudentToGroup(@PathVariable Long id,
+                                    @RequestParam("studentId") List<String> studentsIds){
+        List<Long> studentIdsAsLong = studentsIds.stream()
+                .map(Long::parseLong)
+                .collect(Collectors.toList());
+
+        groupService.addStudentToGroup(id, studentIdsAsLong);
+        return "redirect:/group";
+    }
+
+    @PostMapping("/deleteStudentFromGroup/{id}")
+    public String deleteStudentFromGroup(@PathVariable Long id) {
+        groupService.deleteStudentFromGroup(id);
+        return "redirect:/group";
+    }
+
+    @GetMapping("/addSubjectToGroup/{id}")
+    public String addSubjectToGroupForm(@PathVariable Long id, Model model) {
+        model.addAttribute("groupDTO", new GroupDTO(groupService.findGroup(id)));
+        model.addAttribute("groupId", id);
+        model.addAttribute("subjects", subjectService.findAllSubjects());
+        return "add-subject-to-group";
+    }
+
+    @PostMapping("/addSubjectToGroup/{id}")
+    public String addSubjectToGroup(@PathVariable Long id,
+                                    @RequestParam("subjectId") List<Long> subjectIds) {
+        groupService.addSubjectToGroup(id, subjectIds);
+        return "redirect:/group";
+    }
 }

src/main/java/ru/IP_LabWorks/IP/University/Contoller/MVC/StudentMvcController.java

@@ -57,9 +57,9 @@ public class StudentMvcController {
             return "student-edit";
         }
         if (id == null || id <= 0) {
-            studentService.addStudent(studentDTO.getName(), studentDTO.getBirthDate(), studentDTO.getGroupId());
+            studentService.addStudent(studentDTO.getName(), studentDTO.getBirthDate());
         } else {
-            studentService.updateStudent(id, studentDTO.getName(), studentDTO.getBirthDate(), studentDTO.getGroupId());
+            studentService.updateStudent(id, studentDTO.getName(), studentDTO.getBirthDate());
         }
         return "redirect:/student";
     }

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

@@ -11,6 +11,7 @@ import ru.IP_LabWorks.IP.University.Service.GroupService;
 import ru.IP_LabWorks.IP.WebConfiguration;
 
 import java.util.List;
+import java.util.Map;
 
 @RestController
 @RequestMapping(WebConfiguration.REST_API + "/group")
@@ -60,9 +61,28 @@ public class GroupController {
         return ResponseEntity.ok(subjects);
     }
 
-//    @PostMapping("/{id}/student")
+    @GetMapping("/getStudentsUndefined")
-//    public StudentDTO setStudentToGroup(@PathVariable Long id,
+    public ResponseEntity<List<Student>> getStudentsFromUndefinedGroup(){
-//                                        @RequestParam("studentId") Long studentId) {
+        List<Student> students = groupService.getStudentsUndefined();
-//        return new StudentDTO(groupService.addStudentToGroup(id, studentId));
+        return ResponseEntity.ok(students);
-//    }
+    }
+
+    @PostMapping("/{id}/addStudents")
+    public void addStudentToGroup(@PathVariable Long id, @RequestBody @Valid List<Long> studentsIds){
+        groupService.addStudentToGroup(id, studentsIds);
+    }
+
+    @DeleteMapping("deleteStudentFromGroup/{id}")
+    public void deleteStudentFromGroup(@PathVariable Long id){
+        groupService.deleteStudentFromGroup(id);
+    }
+
+    @PostMapping("/{id}/addSubjectToGroup")
+    public void addSubjectToGroup(@PathVariable Long id, @RequestBody @Valid List<Long> subjectIds){
+        groupService.addSubjectToGroup(id, subjectIds);
+    }
+    @GetMapping("/getAll")
+    public Map<String, List<String>> getAll(){
+        return groupService.getAll();
+    }
 }

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

@@ -1,7 +1,9 @@
 package ru.IP_LabWorks.IP.University.Contoller.REST;
 
 import org.springframework.web.bind.annotation.*;
+import ru.IP_LabWorks.IP.University.Contoller.DTO.GroupDTO;
 import ru.IP_LabWorks.IP.University.Contoller.DTO.StudentDTO;
+import ru.IP_LabWorks.IP.University.Service.GroupService;
 import ru.IP_LabWorks.IP.University.Service.StudentService;
 
 import jakarta.validation.Valid;
@@ -14,9 +16,11 @@ import java.util.List;
 @RequestMapping(WebConfiguration.REST_API + "/student")
 public class StudentController {
     private final StudentService studentService;
+    private final GroupService groupService;
 
-    public StudentController(StudentService studentService) {
+    public StudentController(StudentService studentService, GroupService groupService) {
         this.studentService = studentService;
+        this.groupService = groupService;
     }
 
     @GetMapping("/{id}")
@@ -33,12 +37,12 @@ public class StudentController {
 
     @PostMapping
     public StudentDTO createStudent(@RequestBody @Valid StudentDTO studentDTO){
-        return new StudentDTO(studentService.addStudent(studentDTO.getName(), studentDTO.getBirthDate(), studentDTO.getGroupId()));
+        return new StudentDTO(studentService.addStudent(studentDTO.getName(), studentDTO.getBirthDate()));
     }
 
     @PutMapping("/{id}")
     public StudentDTO updateStudent(@PathVariable Long id, @RequestBody @Valid StudentDTO studentDTO) {
-        return new StudentDTO(studentService.updateStudent(id, studentDTO.getName(), studentDTO.getBirthDate(), studentDTO.getGroupId()));
+        return new StudentDTO(studentService.updateStudent(id, studentDTO.getName(), studentDTO.getBirthDate()));
     }
 
     @DeleteMapping("/{id}")
@@ -46,4 +50,11 @@ public class StudentController {
         return new StudentDTO(studentService.deleteStudent(id));
     }
 
+    @GetMapping("/groups")
+    public List<GroupDTO> getGroups() {
+        return groupService.findAllGroups().stream()
+                .map(GroupDTO::new)
+                .toList();
+    }
+
 }

src/main/java/ru/IP_LabWorks/IP/University/Model/Group.java

@@ -8,6 +8,7 @@ import org.hibernate.annotations.OnDeleteAction;
 
 import javax.swing.*;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 
@@ -89,4 +90,18 @@ public class Group {
         subjects.add(subject);
         subject.getGroups().add(this);
     }
+
+    public List<Long> getSubjectIds() {
+        if (subjects.isEmpty()) {
+            return Collections.emptyList();
+        } else {
+            List<Long> subjectIds = new ArrayList<>();
+            for (Subject subject : subjects) {
+                if (!subjectIds.contains(subject.getId())) {
+                    subjectIds.add(subject.getId());
+                }
+            }
+            return subjectIds;
+        }
+    }
 }

src/main/java/ru/IP_LabWorks/IP/University/Model/Student.java

@@ -25,10 +25,9 @@ public class Student {
     public Student() {
     }
 
-    public Student(String name, LocalDate birthDate, Group group) {
+    public Student(String name, LocalDate birthDate) {
         this.name = name;
         this.birthDate = birthDate;
-        this.group = group;
     }
 
     public Long getId() { return id; }
@@ -59,11 +58,13 @@ public class Student {
 
     @Override
     public String toString() {
+        String groupStr = (group != null) ? group.getName() : "No Group";
         return "Student{" +
                 "id=" + id +
                 ", name='" + name + '\'' +
                 ", birthDate='" + birthDate + '\'' +
                 ", age='" + getAge() + '\'' +
+                ", group='" + groupStr + '\'' +
                 '}';
     }
 

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

@@ -1,6 +1,6 @@
 package ru.IP_LabWorks.IP.University.Service;
 
-import jakarta.persistence.EntityNotFoundException;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
@@ -8,19 +8,25 @@ import ru.IP_LabWorks.IP.University.Model.Group;
 import ru.IP_LabWorks.IP.University.Model.Student;
 import ru.IP_LabWorks.IP.University.Model.Subject;
 import ru.IP_LabWorks.IP.University.Repository.GroupRepository;
-import ru.IP_LabWorks.IP.University.Repository.StudentRepository;
 import ru.IP_LabWorks.IP.University.Service.NotFoundException.GroupNotFoundException;
 
-import java.awt.desktop.OpenFilesEvent;
+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 {
     private final GroupRepository groupRepository;
 
-    public GroupService(GroupRepository groupRepository) {
+    private final StudentService studentService;
+    private final SubjectService subjectService;
+
+    public GroupService(GroupRepository groupRepository, StudentService studentService, @Lazy SubjectService subjectService) {
         this.groupRepository = groupRepository;
+        this.studentService = studentService;
+        this.subjectService = subjectService;
     }
 
     @Transactional
@@ -87,30 +93,49 @@ public class GroupService {
         }
     }
 
-/*    @Transactional
+    @Transactional
-    public Group addStudentToGroup(Long groupId, Long studentId) {
+    public List<Student> getStudentsUndefined(){
-        Group group = findGroup(groupId);
+        List<Student> students = new ArrayList<>();
-        Student student = studentService.findStudent(studentId);
+        for(Student student : studentService.findAllStudents()){
-        if (group == null || student == null) {
+            if(student.getGroup() == null){
-            throw new EntityNotFoundException("Group or Student not found");
+                students.add(student);
+            }
         }
-        group.setStudent(student);
+        return students;
-        return group;
+    }
-    }*/
+
-//
+    @Transactional
-//    @Transactional
+    public void addStudentToGroup(Long groupId, List<Long> studentIds){
-//    public void removeStudentFromGroup(Long groupId, Long studentId) {
+        final Group currentGroup = findGroup(groupId);
-//        Group group = findGroup(groupId);
+        for(Long studentId : studentIds) {
-//        Student student = em.find(Student.class, studentId);
+            studentService.findStudent(studentId).setGroup(currentGroup);
-//        group.getStudents().remove(student);
+        }
-//    }
+        groupRepository.save(currentGroup);
-//
+    }
-//    @Transactional(readOnly = true)
+
-//    public List<Student> findStudentsInGroup(Long groupId) {
+    @Transactional
-//        Group group = findGroup(groupId);
+    public void deleteStudentFromGroup(Long id){
-//        if (group == null) {
+        studentService.findStudent(id).setGroup(null);
-//            throw new EntityNotFoundException("Group not found");
+    }
-//        }
+
-//        return group.getStudents();
+    @Transactional
-//    }
+    public void addSubjectToGroup(Long groupId, List<Long> subjectIds){
+        final Group currentGroup = findGroup(groupId);
+        currentGroup.setSubjects(new ArrayList<>());
+        for(Long subjectId : subjectIds) {
+            currentGroup.getSubjects().add(subjectService.findSubject(subjectId));
+        }
+        groupRepository.save(currentGroup);
+    }
+
+    @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() )
+                        )
+                );
+    }
 }

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

@@ -1,5 +1,7 @@
 package ru.IP_LabWorks.IP.University.Service;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
@@ -17,23 +19,17 @@ public class StudentService {
     private final StudentRepository studentRepository;
     private final GroupService groupService;
 
-    public StudentService(StudentRepository studentRepository, GroupService groupService) {
+    public StudentService(StudentRepository studentRepository,@Lazy GroupService groupService) {
         this.studentRepository = studentRepository;
         this.groupService = groupService;
     }
 
     @Transactional
-    public Student addStudent(String name, LocalDate birthDate, Long groupId){
+    public Student addStudent(String name, LocalDate birthDate){
         if (!StringUtils.hasText(name) || !StringUtils.hasText(String.valueOf(birthDate))) {
             throw new IllegalArgumentException("Student name or date is null or empty");
         }
-        Group group = null;
+        final Student student = new Student(name, birthDate);
-        try{
-            group = groupService.findGroup(groupId);
-        }catch (Exception ex){
-            group = null;
-        }
-        final Student student = new Student(name, birthDate,group);
         return studentRepository.save(student);
     }
 
@@ -49,14 +45,13 @@ public class StudentService {
     }
 
     @Transactional
-    public Student updateStudent(Long id, String name, LocalDate date, Long groupId) {
+    public Student updateStudent(Long id, String name, LocalDate date) {
         if (!StringUtils.hasText(name) || !StringUtils.hasText(String.valueOf(date))) {
             throw new IllegalArgumentException("Student name or date is null or empty");
         }
         final Student currentStudent = findStudent(id);
         currentStudent.setName(name);
         currentStudent.setBirthDate(date);
-        currentStudent.setGroup(groupService.findGroup(groupId));
         return studentRepository.save(currentStudent);
     }
 

src/main/resources/templates/add-students-to-group.html

@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="en"
+      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+      layout:decorate="~{default}">
+<head>
+</head>
+<body>
+<div layout:fragment="content">
+  <div th:text="${errors}" class="margin-bottom alert-danger"></div>
+  <form action="#" th:action="@{/group/addStudents/{id}(id=${groupId})}" method="post">
+    <div class="mb-3">
+      <label for="name" class="form-label">Название</label>
+      <input type="text" class="form-control" id="name" th:field="${groupDTO.name}" readonly>
+    </div>
+    <div class="form-group">
+      <label for="name">Выберите студентов:</label>
+      <ul class="list-group">
+        <li class="list-group-item" th:each="student, iterator: ${undefinedStudents}">
+          <div class="form-check">
+            <input class="form-check-input" type="checkbox" name="studentId" th:value="${student.id}">
+            <label class="form-check-label" th:text="${student.name}"></label>
+          </div>
+        </li>
+      </ul>
+    </div>
+    <div class="mb-3">
+      <button type="submit" class="btn btn-primary button-fixed">
+        <span>Добавить</span>
+      </button>
+      <a class="btn btn-secondary button-fixed" th:href="@{/group}">
+        Назад
+      </a>
+    </div>
+  </form>
+</div>
+</body>
+</html>

src/main/resources/templates/add-subject-to-group.html

@@ -7,19 +7,19 @@
 <body>
 <div layout:fragment="content">
   <div th:text="${errors}" class="margin-bottom alert-danger"></div>
-  <form action="#" th:action="@{/subject/addSubjectToGroup/{id}(id=${subjectId})}" method="post">
+  <form action="#" th:action="@{/group/addSubjectToGroup/{id}(id=${groupId})}" method="post">
     <div class="mb-3">
       <label for="name" class="form-label">Название</label>
-      <input type="text" class="form-control" id="name" th:field="${subjectDTO.name}" readonly>
+      <input type="text" class="form-control" id="name" th:field="${groupDTO.name}" readonly>
     </div>
     <div class="form-group">
-      <label for="name">Выберите группы для добавления:</label>
+      <label for="name">Выберите предметы для добавления:</label>
       <ul class="list-group">
-        <li class="list-group-item" th:each="group, iterator: ${groups}">
+        <li class="list-group-item" th:each="subject, iterator: ${subjects}">
           <div class="form-check">
-            <input class="form-check-input" type="checkbox" th:id="'groupId-' + ${group.id}"
+            <input class="form-check-input" type="checkbox" th:id="'subjectId-' + ${subject.id}"
-                   th:value="${group.id}" th:checked="${subjectDTO.groupIds.contains(group.id)}" name="groupId">
+                   th:value="${subject.id}" th:checked="${groupDTO.subjectIds.contains(subject.id)}" name="subjectId">
-            <label class="form-check-label" th:for="'groupId-' + ${group.id}" th:text="${group.name}"></label>
+            <label class="form-check-label" th:for="'subjectId-' + ${subject.id}" th:text="${subject.name}"></label>
           </div>
         </li>
       </ul>
@@ -28,7 +28,7 @@
       <button type="submit" class="btn btn-primary button-fixed">
         <span>Добавить</span>
       </button>
-      <a class="btn btn-secondary button-fixed" th:href="@{/subject}">
+      <a class="btn btn-secondary button-fixed" th:href="@{/group}">
         Назад
       </a>
     </div>

src/main/resources/templates/group.html

@@ -34,6 +34,10 @@
                         </button>
                         <a class="btn btn-primary button-fixed button-sm"
                            th:href="@{/group/students/{id}(id=${group.id})}">Посмотреть студентов</a>
+                        <a class="btn btn-primary button-fixed button-sm"
+                           th:href="@{/group/getStudentsUndefined/{id}(id=${group.id})}">Добавить студентов</a>
+                        <a class="btn btn-primary button-fixed button-sm"
+                           th:href="@{/group/addSubjectToGroup/{id}(id=${group.id})}"> Добавить предметы</a>
                         <a class="btn btn-primary button-fixed button-sm"
                            th:href="@{/group/subjects/{id}(id=${group.id})}">Посмотреть предметы</a>
                     </div>

src/main/resources/templates/student-edit.html

@@ -16,12 +16,6 @@
       <label for="birthDate" class="form-label">Дата рождения</label>
       <input type="date" class="form-control" id="birthDate" th:field="${studentDTO.birthDate}" required="true">
     </div>
-    <div class="mb-3">
-      <label for="group" class="form-label">Группа</label>
-      <select id="group" class="form-control" th:field="${studentDTO.groupId}">
-        <option th:each="group : ${Groups}" th:value="${group.id}" th:text="${group.name}"></option>
-      </select>
-    </div>
     <div class="mb-3">
       <button type="submit" class="btn btn-primary button-fixed">
         <span th:if="${studentId == null}">Добавить</span>

src/main/resources/templates/subject.html

@@ -32,10 +32,6 @@
                                 th:attr="onclick=|confirm('Удалить запись?') && document.getElementById('remove-${subject.id}').click()|">
                             <i class="fa fa-trash" aria-hidden="true"></i> Удалить
                         </button>
-                        <a class="btn btn-primary button-fixed button-sm"
-                           th:href="@{/subject/addSubjectToGroup/{id}(id=${subject.id})}">
-                            <i class="fa fa-pencil" aria-hidden="true"></i> Добавить предметы в группы
-                        </a>
                     </div>
                     <form th:action="@{/subject/delete/{id}(id=${subject.id})}" method="post">
                         <button th:id="'remove-' + ${subject.id}" type="submit" style="display: none">

src/main/resources/templates/view-students.html

@@ -12,12 +12,18 @@
       <tr>
         <th scope="col">ФИО</th>
         <th scope="col">Дата рождения</th>
+        <th></th>
       </tr>
       </thead>
       <tbody>
       <tr th:each="student, iterator: ${students}">
         <td th:text="${student.name}"></td>
         <td th:text="${student.birthDate}"></td>
+        <td>
+          <form method="post" th:action="@{/group/deleteStudentFromGroup/{id}(id=${student.id})}">
+            <button type="submit" class="btn btn-danger button-fixed button-sm">Удалить</button>
+          </form>
+        </td>
       </tr>
       </tbody>
       <a class="btn btn-secondary button-fixed" th:href="@{/group}">