финал

visuapPart1/thirdLabVisualProg/main.py

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+import sys
+import sqlite3
+from PyQt5.QtWidgets import (
+    QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout,
+    QGroupBox, QTableWidget, QTableWidgetItem, QPushButton, QComboBox,
+    QLabel, QLineEdit, QMessageBox, QTabWidget, QFormLayout,
+    QHeaderView, QAbstractItemView, QStatusBar, QSpinBox
+)
+from PyQt5.QtCore import Qt
+
+
+class Database:
+    """Класс для работы с базой данных SQLite"""
+
+    def __init__(self, db_name="faculty.db"):
+        self.db_name = db_name
+        self.conn = None
+        self.cursor = None
+        self.connect()
+        self.create_tables()
+        self.populate_sample_data()
+
+    def connect(self):
+        """Подключение к базе данных"""
+        self.conn = sqlite3.connect(self.db_name)
+        self.cursor = self.conn.cursor()
+
+    def create_tables(self):
+        """Создание таблиц базы данных"""
+        # Таблица факультетов
+        self.cursor.execute('''
+            CREATE TABLE IF NOT EXISTS faculties (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                name TEXT NOT NULL UNIQUE,
+                dean TEXT
+            )
+        ''')
+
+        # Таблица кафедр
+        self.cursor.execute('''
+            CREATE TABLE IF NOT EXISTS departments (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                name TEXT NOT NULL,
+                faculty_id INTEGER,
+                head TEXT,
+                FOREIGN KEY (faculty_id) REFERENCES faculties(id) ON DELETE CASCADE
+            )
+        ''')
+
+        # Таблица групп
+        self.cursor.execute('''
+            CREATE TABLE IF NOT EXISTS groups (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                name TEXT NOT NULL,
+                department_id INTEGER,
+                course INTEGER,
+                FOREIGN KEY (department_id) REFERENCES departments(id) ON DELETE CASCADE
+            )
+        ''')
+
+        # Таблица студентов
+        self.cursor.execute('''
+            CREATE TABLE IF NOT EXISTS students (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                last_name TEXT NOT NULL,
+                first_name TEXT NOT NULL,
+                middle_name TEXT,
+                group_id INTEGER,
+                birth_year INTEGER,
+                email TEXT,
+                FOREIGN KEY (group_id) REFERENCES groups(id) ON DELETE CASCADE
+            )
+        ''')
+
+        self.conn.commit()
+
+    def populate_sample_data(self):
+        """Заполнение тестовыми данными (если таблицы пустые)"""
+        self.cursor.execute("SELECT COUNT(*) FROM faculties")
+        if self.cursor.fetchone()[0] > 0:
+            return
+
+        # Факультеты
+        faculties = [
+            ("Информатика и вычислительная техника", "Иванов И.И."),
+            ("Экономика и управление", "Петров П.П."),
+            ("Инфокоммуникационные технологии", "Сидоров С.С.")
+        ]
+        self.cursor.executemany("INSERT INTO faculties (name, dean) VALUES (?, ?)", faculties)
+
+        # Кафедры
+        departments = [
+            ("Программная инженерия", 1, "Козлов А.А."),
+            ("Информационные системы", 1, "Новиков Б.Б."),
+            ("Менеджмент", 2, "Смирнова В.В."),
+            ("Сети связи", 3, "Федоров Г.Г.")
+        ]
+        self.cursor.executemany(
+            "INSERT INTO departments (name, faculty_id, head) VALUES (?, ?, ?)",
+            departments
+        )
+
+        # Группы
+        groups = [
+            ("ПИ-21", 1, 3),
+            ("ПИ-22", 1, 2),
+            ("ИС-21", 2, 3),
+            ("М-21", 3, 3),
+            ("СС-21", 4, 3)
+        ]
+        self.cursor.executemany(
+            "INSERT INTO groups (name, department_id, course) VALUES (?, ?, ?)",
+            groups
+        )
+
+        # Студенты
+        students = [
+            ("Александров", "Алексей", "Андреевич", 1, 2003, "alex@mail.ru"),
+            ("Борисова", "Бэлла", "Борисовна", 1, 2004, "bella@mail.ru"),
+            ("Васильев", "Виктор", "Владимирович", 2, 2004, "victor@mail.ru"),
+            ("Григорьева", "Галина", "Геннадьевна", 2, 2003, "galina@mail.ru"),
+            ("Дмитриев", "Денис", "Дмитриевич", 3, 2003, "denis@mail.ru"),
+            ("Егорова", "Елена", "Евгеньевна", 3, 2004, "elena@mail.ru"),
+            ("Жуков", "Захар", "Зиновьевич", 4, 2003, "zahar@mail.ru"),
+            ("Иванова", "Ирина", "Игоревна", 4, 2004, "irina@mail.ru"),
+            ("Кузнецов", "Кирилл", "Константинович", 5, 2003, "kirill@mail.ru"),
+            ("Лебедева", "Любовь", "Леонидовна", 5, 2004, "lubov@mail.ru"),
+        ]
+        self.cursor.executemany(
+            "INSERT INTO students (last_name, first_name, middle_name, group_id, birth_year, email) VALUES (?, ?, ?, ?, ?, ?)",
+            students
+        )
+
+        self.conn.commit()
+
+    # === CRUD операции для факультетов ===
+    def get_faculties(self):
+        self.cursor.execute("SELECT * FROM faculties ORDER BY name")
+        return self.cursor.fetchall()
+
+    def add_faculty(self, name, dean):
+        self.cursor.execute("INSERT INTO faculties (name, dean) VALUES (?, ?)", (name, dean))
+        self.conn.commit()
+        return self.cursor.lastrowid
+
+    def update_faculty(self, id, name, dean):
+        self.cursor.execute("UPDATE faculties SET name=?, dean=? WHERE id=?", (name, dean, id))
+        self.conn.commit()
+
+    def delete_faculty(self, id):
+        self.cursor.execute("DELETE FROM faculties WHERE id=?", (id,))
+        self.conn.commit()
+
+    # === CRUD операции для кафедр ===
+    def get_departments(self, faculty_id=None):
+        if faculty_id:
+            self.cursor.execute("""
+                SELECT d.id, d.name, d.faculty_id, d.head, f.name as faculty_name
+                FROM departments d
+                JOIN faculties f ON d.faculty_id = f.id
+                WHERE d.faculty_id = ?
+                ORDER BY d.name
+            """, (faculty_id,))
+        else:
+            self.cursor.execute("""
+                SELECT d.id, d.name, d.faculty_id, d.head, f.name as faculty_name
+                FROM departments d
+                JOIN faculties f ON d.faculty_id = f.id
+                ORDER BY d.name
+            """)
+        return self.cursor.fetchall()
+
+    def add_department(self, name, faculty_id, head):
+        self.cursor.execute(
+            "INSERT INTO departments (name, faculty_id, head) VALUES (?, ?, ?)",
+            (name, faculty_id, head)
+        )
+        self.conn.commit()
+        return self.cursor.lastrowid
+
+    def update_department(self, id, name, faculty_id, head):
+        self.cursor.execute(
+            "UPDATE departments SET name=?, faculty_id=?, head=? WHERE id=?",
+            (name, faculty_id, head, id)
+        )
+        self.conn.commit()
+
+    def delete_department(self, id):
+        self.cursor.execute("DELETE FROM departments WHERE id=?", (id,))
+        self.conn.commit()
+
+    # === CRUD операции для групп ===
+    def get_groups(self, department_id=None):
+        if department_id:
+            self.cursor.execute("""
+                SELECT g.id, g.name, g.department_id, g.course, d.name as department_name
+                FROM groups g
+                JOIN departments d ON g.department_id = d.id
+                WHERE g.department_id = ?
+                ORDER BY g.name
+            """, (department_id,))
+        else:
+            self.cursor.execute("""
+                SELECT g.id, g.name, g.department_id, g.course, d.name as department_name
+                FROM groups g
+                JOIN departments d ON g.department_id = d.id
+                ORDER BY g.name
+            """)
+        return self.cursor.fetchall()
+
+    def add_group(self, name, department_id, course):
+        self.cursor.execute(
+            "INSERT INTO groups (name, department_id, course) VALUES (?, ?, ?)",
+            (name, department_id, course)
+        )
+        self.conn.commit()
+        return self.cursor.lastrowid
+
+    def update_group(self, id, name, department_id, course):
+        self.cursor.execute(
+            "UPDATE groups SET name=?, department_id=?, course=? WHERE id=?",
+            (name, department_id, course, id)
+        )
+        self.conn.commit()
+
+    def delete_group(self, id):
+        self.cursor.execute("DELETE FROM groups WHERE id=?", (id,))
+        self.conn.commit()
+
+    # === CRUD операции для студентов ===
+    def get_students(self, group_id=None, search_query=None):
+        if search_query:
+            query = """
+                SELECT s.id, s.last_name, s.first_name, s.middle_name,
+                       s.group_id, s.birth_year, s.email, g.name as group_name
+                FROM students s
+                JOIN groups g ON s.group_id = g.id
+                WHERE s.last_name LIKE ? OR s.first_name LIKE ? OR s.middle_name LIKE ?
+                ORDER BY s.last_name, s.first_name
+            """
+            search = f"%{search_query}%"
+            self.cursor.execute(query, (search, search, search))
+        elif group_id:
+            self.cursor.execute("""
+                SELECT s.id, s.last_name, s.first_name, s.middle_name,
+                       s.group_id, s.birth_year, s.email, g.name as group_name
+                FROM students s
+                JOIN groups g ON s.group_id = g.id
+                WHERE s.group_id = ?
+                ORDER BY s.last_name, s.first_name
+            """, (group_id,))
+        else:
+            self.cursor.execute("""
+                SELECT s.id, s.last_name, s.first_name, s.middle_name,
+                       s.group_id, s.birth_year, s.email, g.name as group_name
+                FROM students s
+                JOIN groups g ON s.group_id = g.id
+                ORDER BY s.last_name, s.first_name
+            """)
+        return self.cursor.fetchall()
+
+    def add_student(self, last_name, first_name, middle_name, group_id, birth_year, email):
+        self.cursor.execute(
+            "INSERT INTO students (last_name, first_name, middle_name, group_id, birth_year, email) VALUES (?, ?, ?, ?, ?, ?)",
+            (last_name, first_name, middle_name, group_id, birth_year, email)
+        )
+        self.conn.commit()
+        return self.cursor.lastrowid
+
+    def update_student(self, id, last_name, first_name, middle_name, group_id, birth_year, email):
+        self.cursor.execute(
+            "UPDATE students SET last_name=?, first_name=?, middle_name=?, group_id=?, birth_year=?, email=? WHERE id=?",
+            (last_name, first_name, middle_name, group_id, birth_year, email, id)
+        )
+        self.conn.commit()
+
+    def delete_student(self, id):
+        self.cursor.execute("DELETE FROM students WHERE id=?", (id,))
+        self.conn.commit()
+
+    def search_student_exact(self, last_name):
+        """Поиск студента по точной фамилии"""
+        self.cursor.execute("""
+            SELECT s.id, s.last_name, s.first_name, s.middle_name,
+                   s.group_id, s.birth_year, s.email, g.name as group_name
+            FROM students s
+            JOIN groups g ON s.group_id = g.id
+            WHERE s.last_name = ?
+            ORDER BY s.first_name
+        """, (last_name,))
+        return self.cursor.fetchall()
+
+    def close(self):
+        if self.conn:
+            self.conn.close()
+
+
+class MainWindow(QMainWindow):
+    """Главное окно приложения"""
+
+    def __init__(self):
+        super().__init__()
+        self.setWindowTitle("Лабораторная работа №3 - База данных «Факультет»")
+        self.setMinimumSize(1100, 700)
+
+        # Инициализация базы данных
+        self.db = Database()
+
+        # Создание интерфейса
+        self.init_ui()
+
+        # Загрузка данных
+        self.load_all_data()
+
+    def init_ui(self):
+        """Инициализация интерфейса"""
+        central_widget = QWidget()
+        self.setCentralWidget(central_widget)
+        main_layout = QVBoxLayout(central_widget)
+
+        # Верхняя панель - поиск студентов
+        search_group = QGroupBox("Поиск студентов")
+        search_layout = QHBoxLayout(search_group)
+
+        search_layout.addWidget(QLabel("Фамилия:"))
+        self.search_input = QLineEdit()
+        self.search_input.setPlaceholderText("Введите фамилию для поиска...")
+        self.search_input.returnPressed.connect(self.search_students)
+        search_layout.addWidget(self.search_input)
+
+        self.btn_search = QPushButton("Поиск (частичный)")
+        self.btn_search.clicked.connect(self.search_students)
+        search_layout.addWidget(self.btn_search)
+
+        self.btn_search_exact = QPushButton("Точный поиск")
+        self.btn_search_exact.clicked.connect(self.search_students_exact)
+        search_layout.addWidget(self.btn_search_exact)
+
+        self.btn_reset_search = QPushButton("Сбросить")
+        self.btn_reset_search.clicked.connect(self.reset_search)
+        search_layout.addWidget(self.btn_reset_search)
+
+        main_layout.addWidget(search_group)
+
+        # Вкладки для разных таблиц
+        self.tabs = QTabWidget()
+        main_layout.addWidget(self.tabs)
+
+        # Вкладка студентов
+        self.create_students_tab()
+
+        # Вкладка групп
+        self.create_groups_tab()
+
+        # Вкладка кафедр
+        self.create_departments_tab()
+
+        # Вкладка факультетов
+        self.create_faculties_tab()
+
+        # Статусбар
+        self.statusBar = QStatusBar()
+        self.setStatusBar(self.statusBar)
+        self.statusBar.showMessage("Готово")
+
+    def create_students_tab(self):
+        """Создание вкладки студентов"""
+        tab = QWidget()
+        layout = QVBoxLayout(tab)
+
+        # Фильтр по группе
+        filter_layout = QHBoxLayout()
+        filter_layout.addWidget(QLabel("Фильтр по группе:"))
+        self.students_group_filter = QComboBox()
+        self.students_group_filter.currentIndexChanged.connect(self.filter_students_by_group)
+        filter_layout.addWidget(self.students_group_filter)
+        filter_layout.addStretch()
+        layout.addLayout(filter_layout)
+
+        # Таблица студентов
+        self.students_table = QTableWidget()
+        self.students_table.setColumnCount(7)
+        self.students_table.setHorizontalHeaderLabels([
+            "ID", "Фамилия", "Имя", "Отчество", "Группа", "Год рождения", "Email"
+        ])
+        self.students_table.setSelectionBehavior(QAbstractItemView.SelectRows)
+        self.students_table.setEditTriggers(QAbstractItemView.NoEditTriggers)
+        self.students_table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)
+        self.students_table.setColumnHidden(0, True)  # Скрываем ID
+        layout.addWidget(self.students_table)
+
+        # Форма редактирования
+        form_group = QGroupBox("Добавить/Редактировать студента")
+        form_layout = QFormLayout(form_group)
+
+        self.student_last_name = QLineEdit()
+        self.student_first_name = QLineEdit()
+        self.student_middle_name = QLineEdit()
+        self.student_group = QComboBox()
+        self.student_birth_year = QSpinBox()
+        self.student_birth_year.setRange(1990, 2010)
+        self.student_birth_year.setValue(2003)
+        self.student_email = QLineEdit()
+
+        form_layout.addRow("Фамилия:", self.student_last_name)
+        form_layout.addRow("Имя:", self.student_first_name)
+        form_layout.addRow("Отчество:", self.student_middle_name)
+        form_layout.addRow("Группа:", self.student_group)
+        form_layout.addRow("Год рождения:", self.student_birth_year)
+        form_layout.addRow("Email:", self.student_email)
+
+        layout.addWidget(form_group)
+
+        # Кнопки управления
+        buttons_layout = QHBoxLayout()
+        btn_add = QPushButton("Добавить")
+        btn_add.clicked.connect(self.add_student)
+        btn_edit = QPushButton("Изменить выбранного")
+        btn_edit.clicked.connect(self.edit_student)
+        btn_delete = QPushButton("Удалить выбранного")
+        btn_delete.clicked.connect(self.delete_student)
+        btn_load = QPushButton("Загрузить в форму")
+        btn_load.clicked.connect(self.load_student_to_form)
+
+        buttons_layout.addWidget(btn_add)
+        buttons_layout.addWidget(btn_edit)
+        buttons_layout.addWidget(btn_delete)
+        buttons_layout.addWidget(btn_load)
+        buttons_layout.addStretch()
+        layout.addLayout(buttons_layout)
+
+        self.tabs.addTab(tab, "Студенты")
+
+    def create_groups_tab(self):
+        """Создание вкладки групп"""
+        tab = QWidget()
+        layout = QVBoxLayout(tab)
+
+        # Фильтр по кафедре
+        filter_layout = QHBoxLayout()
+        filter_layout.addWidget(QLabel("Фильтр по кафедре:"))
+        self.groups_dept_filter = QComboBox()
+        self.groups_dept_filter.currentIndexChanged.connect(self.filter_groups_by_department)
+        filter_layout.addWidget(self.groups_dept_filter)
+        filter_layout.addStretch()
+        layout.addLayout(filter_layout)
+
+        # Таблица групп
+        self.groups_table = QTableWidget()
+        self.groups_table.setColumnCount(4)
+        self.groups_table.setHorizontalHeaderLabels(["ID", "Название", "Кафедра", "Курс"])
+        self.groups_table.setSelectionBehavior(QAbstractItemView.SelectRows)
+        self.groups_table.setEditTriggers(QAbstractItemView.NoEditTriggers)
+        self.groups_table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)
+        self.groups_table.setColumnHidden(0, True)
+        layout.addWidget(self.groups_table)
+
+        # Форма редактирования
+        form_group = QGroupBox("Добавить/Редактировать группу")
+        form_layout = QFormLayout(form_group)
+
+        self.group_name = QLineEdit()
+        self.group_department = QComboBox()
+        self.group_course = QSpinBox()
+        self.group_course.setRange(1, 6)
+        self.group_course.setValue(1)
+
+        form_layout.addRow("Название:", self.group_name)
+        form_layout.addRow("Кафедра:", self.group_department)
+        form_layout.addRow("Курс:", self.group_course)
+
+        layout.addWidget(form_group)
+
+        # Кнопки
+        buttons_layout = QHBoxLayout()
+        btn_add = QPushButton("Добавить")
+        btn_add.clicked.connect(self.add_group)
+        btn_edit = QPushButton("Изменить")
+        btn_edit.clicked.connect(self.edit_group)
+        btn_delete = QPushButton("Удалить")
+        btn_delete.clicked.connect(self.delete_group)
+        btn_load = QPushButton("Загрузить в форму")
+        btn_load.clicked.connect(self.load_group_to_form)
+
+        buttons_layout.addWidget(btn_add)
+        buttons_layout.addWidget(btn_edit)
+        buttons_layout.addWidget(btn_delete)
+        buttons_layout.addWidget(btn_load)
+        buttons_layout.addStretch()
+        layout.addLayout(buttons_layout)
+
+        self.tabs.addTab(tab, "Группы")
+
+    def create_departments_tab(self):
+        """Создание вкладки кафедр"""
+        tab = QWidget()
+        layout = QVBoxLayout(tab)
+
+        # Фильтр по факультету
+        filter_layout = QHBoxLayout()
+        filter_layout.addWidget(QLabel("Фильтр по факультету:"))
+        self.depts_faculty_filter = QComboBox()
+        self.depts_faculty_filter.currentIndexChanged.connect(self.filter_departments_by_faculty)
+        filter_layout.addWidget(self.depts_faculty_filter)
+        filter_layout.addStretch()
+        layout.addLayout(filter_layout)
+
+        # Таблица кафедр
+        self.departments_table = QTableWidget()
+        self.departments_table.setColumnCount(4)
+        self.departments_table.setHorizontalHeaderLabels(["ID", "Название", "Факультет", "Заведующий"])
+        self.departments_table.setSelectionBehavior(QAbstractItemView.SelectRows)
+        self.departments_table.setEditTriggers(QAbstractItemView.NoEditTriggers)
+        self.departments_table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)
+        self.departments_table.setColumnHidden(0, True)
+        layout.addWidget(self.departments_table)
+
+        # Форма редактирования
+        form_group = QGroupBox("Добавить/Редактировать кафедру")
+        form_layout = QFormLayout(form_group)
+
+        self.dept_name = QLineEdit()
+        self.dept_faculty = QComboBox()
+        self.dept_head = QLineEdit()
+
+        form_layout.addRow("Название:", self.dept_name)
+        form_layout.addRow("Факультет:", self.dept_faculty)
+        form_layout.addRow("Заведующий:", self.dept_head)
+
+        layout.addWidget(form_group)
+
+        # Кнопки
+        buttons_layout = QHBoxLayout()
+        btn_add = QPushButton("Добавить")
+        btn_add.clicked.connect(self.add_department)
+        btn_edit = QPushButton("Изменить")
+        btn_edit.clicked.connect(self.edit_department)
+        btn_delete = QPushButton("Удалить")
+        btn_delete.clicked.connect(self.delete_department)
+        btn_load = QPushButton("Загрузить в форму")
+        btn_load.clicked.connect(self.load_department_to_form)
+
+        buttons_layout.addWidget(btn_add)
+        buttons_layout.addWidget(btn_edit)
+        buttons_layout.addWidget(btn_delete)
+        buttons_layout.addWidget(btn_load)
+        buttons_layout.addStretch()
+        layout.addLayout(buttons_layout)
+
+        self.tabs.addTab(tab, "Кафедры")
+
+    def create_faculties_tab(self):
+        """Создание вкладки факультетов"""
+        tab = QWidget()
+        layout = QVBoxLayout(tab)
+
+        # Таблица факультетов
+        self.faculties_table = QTableWidget()
+        self.faculties_table.setColumnCount(3)
+        self.faculties_table.setHorizontalHeaderLabels(["ID", "Название", "Декан"])
+        self.faculties_table.setSelectionBehavior(QAbstractItemView.SelectRows)
+        self.faculties_table.setEditTriggers(QAbstractItemView.NoEditTriggers)
+        self.faculties_table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)
+        self.faculties_table.setColumnHidden(0, True)
+        layout.addWidget(self.faculties_table)
+
+        # Форма редактирования
+        form_group = QGroupBox("Добавить/Редактировать факультет")
+        form_layout = QFormLayout(form_group)
+
+        self.faculty_name = QLineEdit()
+        self.faculty_dean = QLineEdit()
+
+        form_layout.addRow("Название:", self.faculty_name)
+        form_layout.addRow("Декан:", self.faculty_dean)
+
+        layout.addWidget(form_group)
+
+        # Кнопки
+        buttons_layout = QHBoxLayout()
+        btn_add = QPushButton("Добавить")
+        btn_add.clicked.connect(self.add_faculty)
+        btn_edit = QPushButton("Изменить")
+        btn_edit.clicked.connect(self.edit_faculty)
+        btn_delete = QPushButton("Удалить")
+        btn_delete.clicked.connect(self.delete_faculty)
+        btn_load = QPushButton("Загрузить в форму")
+        btn_load.clicked.connect(self.load_faculty_to_form)
+
+        buttons_layout.addWidget(btn_add)
+        buttons_layout.addWidget(btn_edit)
+        buttons_layout.addWidget(btn_delete)
+        buttons_layout.addWidget(btn_load)
+        buttons_layout.addStretch()
+        layout.addLayout(buttons_layout)
+
+        self.tabs.addTab(tab, "Факультеты")
+
+    def load_all_data(self):
+        """Загрузка всех данных"""
+        self.load_faculties()
+        self.load_departments()
+        self.load_groups()
+        self.load_students()
+        self.update_comboboxes()
+
+    def update_comboboxes(self):
+        """Обновление выпадающих списков"""
+        # Факультеты
+        faculties = self.db.get_faculties()
+
+        self.depts_faculty_filter.clear()
+        self.depts_faculty_filter.addItem("Все факультеты", None)
+        self.dept_faculty.clear()
+
+        for f in faculties:
+            self.depts_faculty_filter.addItem(f[1], f[0])
+            self.dept_faculty.addItem(f[1], f[0])
+
+        # Кафедры
+        departments = self.db.get_departments()
+
+        self.groups_dept_filter.clear()
+        self.groups_dept_filter.addItem("Все кафедры", None)
+        self.group_department.clear()
+
+        for d in departments:
+            self.groups_dept_filter.addItem(d[1], d[0])
+            self.group_department.addItem(d[1], d[0])
+
+        # Группы
+        groups = self.db.get_groups()
+
+        self.students_group_filter.clear()
+        self.students_group_filter.addItem("Все группы", None)
+        self.student_group.clear()
+
+        for g in groups:
+            self.students_group_filter.addItem(g[1], g[0])
+            self.student_group.addItem(g[1], g[0])
+
+    # === Факультеты ===
+    def load_faculties(self):
+        faculties = self.db.get_faculties()
+        self.faculties_table.setRowCount(len(faculties))
+        for row, f in enumerate(faculties):
+            self.faculties_table.setItem(row, 0, QTableWidgetItem(str(f[0])))
+            self.faculties_table.setItem(row, 1, QTableWidgetItem(f[1]))
+            self.faculties_table.setItem(row, 2, QTableWidgetItem(f[2] or ""))
+
+    def add_faculty(self):
+        name = self.faculty_name.text().strip()
+        dean = self.faculty_dean.text().strip()
+        if not name:
+            QMessageBox.warning(self, "Ошибка", "Введите название факультета")
+            return
+        try:
+            self.db.add_faculty(name, dean)
+            self.load_all_data()
+            self.faculty_name.clear()
+            self.faculty_dean.clear()
+            self.statusBar.showMessage("Факультет добавлен")
+        except Exception as e:
+            QMessageBox.critical(self, "Ошибка", str(e))
+
+    def edit_faculty(self):
+        row = self.faculties_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите факультет")
+            return
+        id = int(self.faculties_table.item(row, 0).text())
+        name = self.faculty_name.text().strip()
+        dean = self.faculty_dean.text().strip()
+        if not name:
+            QMessageBox.warning(self, "Ошибка", "Введите название факультета")
+            return
+        self.db.update_faculty(id, name, dean)
+        self.load_all_data()
+        self.statusBar.showMessage("Факультет обновлен")
+
+    def delete_faculty(self):
+        row = self.faculties_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите факультет")
+            return
+        reply = QMessageBox.question(self, "Подтверждение",
+                                     "Удалить факультет? Это также удалит все связанные кафедры, группы и студентов.",
+                                     QMessageBox.Yes | QMessageBox.No)
+        if reply == QMessageBox.Yes:
+            id = int(self.faculties_table.item(row, 0).text())
+            self.db.delete_faculty(id)
+            self.load_all_data()
+            self.statusBar.showMessage("Факультет удален")
+
+    def load_faculty_to_form(self):
+        row = self.faculties_table.currentRow()
+        if row < 0:
+            return
+        self.faculty_name.setText(self.faculties_table.item(row, 1).text())
+        self.faculty_dean.setText(self.faculties_table.item(row, 2).text())
+
+    # === Кафедры ===
+    def load_departments(self, faculty_id=None):
+        departments = self.db.get_departments(faculty_id)
+        self.departments_table.setRowCount(len(departments))
+        for row, d in enumerate(departments):
+            self.departments_table.setItem(row, 0, QTableWidgetItem(str(d[0])))
+            self.departments_table.setItem(row, 1, QTableWidgetItem(d[1]))
+            self.departments_table.setItem(row, 2, QTableWidgetItem(d[4]))  # faculty_name
+            self.departments_table.setItem(row, 3, QTableWidgetItem(d[3] or ""))
+
+    def filter_departments_by_faculty(self):
+        faculty_id = self.depts_faculty_filter.currentData()
+        self.load_departments(faculty_id)
+
+    def add_department(self):
+        name = self.dept_name.text().strip()
+        faculty_id = self.dept_faculty.currentData()
+        head = self.dept_head.text().strip()
+        if not name or not faculty_id:
+            QMessageBox.warning(self, "Ошибка", "Заполните все обязательные поля")
+            return
+        self.db.add_department(name, faculty_id, head)
+        self.load_all_data()
+        self.dept_name.clear()
+        self.dept_head.clear()
+        self.statusBar.showMessage("Кафедра добавлена")
+
+    def edit_department(self):
+        row = self.departments_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите кафедру")
+            return
+        id = int(self.departments_table.item(row, 0).text())
+        name = self.dept_name.text().strip()
+        faculty_id = self.dept_faculty.currentData()
+        head = self.dept_head.text().strip()
+        if not name or not faculty_id:
+            QMessageBox.warning(self, "Ошибка", "Заполните все обязательные поля")
+            return
+        self.db.update_department(id, name, faculty_id, head)
+        self.load_all_data()
+        self.statusBar.showMessage("Кафедра обновлена")
+
+    def delete_department(self):
+        row = self.departments_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите кафедру")
+            return
+        reply = QMessageBox.question(self, "Подтверждение",
+                                     "Удалить кафедру? Это также удалит все связанные группы и студентов.",
+                                     QMessageBox.Yes | QMessageBox.No)
+        if reply == QMessageBox.Yes:
+            id = int(self.departments_table.item(row, 0).text())
+            self.db.delete_department(id)
+            self.load_all_data()
+            self.statusBar.showMessage("Кафедра удалена")
+
+    def load_department_to_form(self):
+        row = self.departments_table.currentRow()
+        if row < 0:
+            return
+        self.dept_name.setText(self.departments_table.item(row, 1).text())
+        self.dept_head.setText(self.departments_table.item(row, 3).text())
+        # Найти факультет в комбобоксе
+        faculty_name = self.departments_table.item(row, 2).text()
+        index = self.dept_faculty.findText(faculty_name)
+        if index >= 0:
+            self.dept_faculty.setCurrentIndex(index)
+
+    # === Группы ===
+    def load_groups(self, department_id=None):
+        groups = self.db.get_groups(department_id)
+        self.groups_table.setRowCount(len(groups))
+        for row, g in enumerate(groups):
+            self.groups_table.setItem(row, 0, QTableWidgetItem(str(g[0])))
+            self.groups_table.setItem(row, 1, QTableWidgetItem(g[1]))
+            self.groups_table.setItem(row, 2, QTableWidgetItem(g[4]))  # department_name
+            self.groups_table.setItem(row, 3, QTableWidgetItem(str(g[3])))
+
+    def filter_groups_by_department(self):
+        dept_id = self.groups_dept_filter.currentData()
+        self.load_groups(dept_id)
+
+    def add_group(self):
+        name = self.group_name.text().strip()
+        dept_id = self.group_department.currentData()
+        course = self.group_course.value()
+        if not name or not dept_id:
+            QMessageBox.warning(self, "Ошибка", "Заполните все обязательные поля")
+            return
+        self.db.add_group(name, dept_id, course)
+        self.load_all_data()
+        self.group_name.clear()
+        self.statusBar.showMessage("Группа добавлена")
+
+    def edit_group(self):
+        row = self.groups_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите группу")
+            return
+        id = int(self.groups_table.item(row, 0).text())
+        name = self.group_name.text().strip()
+        dept_id = self.group_department.currentData()
+        course = self.group_course.value()
+        if not name or not dept_id:
+            QMessageBox.warning(self, "Ошибка", "Заполните все обязательные поля")
+            return
+        self.db.update_group(id, name, dept_id, course)
+        self.load_all_data()
+        self.statusBar.showMessage("Группа обновлена")
+
+    def delete_group(self):
+        row = self.groups_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите группу")
+            return
+        reply = QMessageBox.question(self, "Подтверждение",
+                                     "Удалить группу? Это также удалит всех студентов группы.",
+                                     QMessageBox.Yes | QMessageBox.No)
+        if reply == QMessageBox.Yes:
+            id = int(self.groups_table.item(row, 0).text())
+            self.db.delete_group(id)
+            self.load_all_data()
+            self.statusBar.showMessage("Группа удалена")
+
+    def load_group_to_form(self):
+        row = self.groups_table.currentRow()
+        if row < 0:
+            return
+        self.group_name.setText(self.groups_table.item(row, 1).text())
+        self.group_course.setValue(int(self.groups_table.item(row, 3).text()))
+        dept_name = self.groups_table.item(row, 2).text()
+        index = self.group_department.findText(dept_name)
+        if index >= 0:
+            self.group_department.setCurrentIndex(index)
+
+    # === Студенты ===
+    def load_students(self, group_id=None, search_query=None):
+        students = self.db.get_students(group_id, search_query)
+        self.students_table.setRowCount(len(students))
+        for row, s in enumerate(students):
+            self.students_table.setItem(row, 0, QTableWidgetItem(str(s[0])))
+            self.students_table.setItem(row, 1, QTableWidgetItem(s[1]))
+            self.students_table.setItem(row, 2, QTableWidgetItem(s[2]))
+            self.students_table.setItem(row, 3, QTableWidgetItem(s[3] or ""))
+            self.students_table.setItem(row, 4, QTableWidgetItem(s[7]))  # group_name
+            self.students_table.setItem(row, 5, QTableWidgetItem(str(s[5])))
+            self.students_table.setItem(row, 6, QTableWidgetItem(s[6] or ""))
+
+    def filter_students_by_group(self):
+        group_id = self.students_group_filter.currentData()
+        self.load_students(group_id)
+
+    def search_students(self):
+        query = self.search_input.text().strip()
+        if query:
+            self.load_students(search_query=query)
+            self.statusBar.showMessage(f"Поиск: {query}")
+        else:
+            self.load_students()
+
+    def search_students_exact(self):
+        query = self.search_input.text().strip()
+        if query:
+            students = self.db.search_student_exact(query)
+            self.students_table.setRowCount(len(students))
+            for row, s in enumerate(students):
+                self.students_table.setItem(row, 0, QTableWidgetItem(str(s[0])))
+                self.students_table.setItem(row, 1, QTableWidgetItem(s[1]))
+                self.students_table.setItem(row, 2, QTableWidgetItem(s[2]))
+                self.students_table.setItem(row, 3, QTableWidgetItem(s[3] or ""))
+                self.students_table.setItem(row, 4, QTableWidgetItem(s[7]))
+                self.students_table.setItem(row, 5, QTableWidgetItem(str(s[5])))
+                self.students_table.setItem(row, 6, QTableWidgetItem(s[6] or ""))
+            self.statusBar.showMessage(f"Точный поиск: {query} (найдено: {len(students)})")
+
+    def reset_search(self):
+        self.search_input.clear()
+        self.students_group_filter.setCurrentIndex(0)
+        self.load_students()
+        self.statusBar.showMessage("Поиск сброшен")
+
+    def add_student(self):
+        last_name = self.student_last_name.text().strip()
+        first_name = self.student_first_name.text().strip()
+        middle_name = self.student_middle_name.text().strip()
+        group_id = self.student_group.currentData()
+        birth_year = self.student_birth_year.value()
+        email = self.student_email.text().strip()
+
+        if not last_name or not first_name or not group_id:
+            QMessageBox.warning(self, "Ошибка", "Заполните обязательные поля (Фамилия, Имя, Группа)")
+            return
+
+        self.db.add_student(last_name, first_name, middle_name, group_id, birth_year, email)
+        self.load_students()
+        self.clear_student_form()
+        self.statusBar.showMessage("Студент добавлен")
+
+    def edit_student(self):
+        row = self.students_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите студента")
+            return
+
+        id = int(self.students_table.item(row, 0).text())
+        last_name = self.student_last_name.text().strip()
+        first_name = self.student_first_name.text().strip()
+        middle_name = self.student_middle_name.text().strip()
+        group_id = self.student_group.currentData()
+        birth_year = self.student_birth_year.value()
+        email = self.student_email.text().strip()
+
+        if not last_name or not first_name or not group_id:
+            QMessageBox.warning(self, "Ошибка", "Заполните обязательные поля")
+            return
+
+        self.db.update_student(id, last_name, first_name, middle_name, group_id, birth_year, email)
+        self.load_students()
+        self.statusBar.showMessage("Студент обновлен")
+
+    def delete_student(self):
+        row = self.students_table.currentRow()
+        if row < 0:
+            QMessageBox.warning(self, "Ошибка", "Выберите студента")
+            return
+        reply = QMessageBox.question(self, "Подтверждение", "Удалить студента?",
+                                     QMessageBox.Yes | QMessageBox.No)
+        if reply == QMessageBox.Yes:
+            id = int(self.students_table.item(row, 0).text())
+            self.db.delete_student(id)
+            self.load_students()
+            self.statusBar.showMessage("Студент удален")
+
+    def load_student_to_form(self):
+        row = self.students_table.currentRow()
+        if row < 0:
+            return
+        self.student_last_name.setText(self.students_table.item(row, 1).text())
+        self.student_first_name.setText(self.students_table.item(row, 2).text())
+        self.student_middle_name.setText(self.students_table.item(row, 3).text())
+        self.student_birth_year.setValue(int(self.students_table.item(row, 5).text()))
+        self.student_email.setText(self.students_table.item(row, 6).text())
+        # Найти группу
+        group_name = self.students_table.item(row, 4).text()
+        index = self.student_group.findText(group_name)
+        if index >= 0:
+            self.student_group.setCurrentIndex(index)
+
+    def clear_student_form(self):
+        self.student_last_name.clear()
+        self.student_first_name.clear()
+        self.student_middle_name.clear()
+        self.student_email.clear()
+        self.student_birth_year.setValue(2003)
+
+    def closeEvent(self, event):
+        """Закрытие приложения"""
+        self.db.close()
+        event.accept()
+
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    window = MainWindow()
+    window.show()
+    sys.exit(app.exec_())

visuapPart1/thirdLabVisualProg/requirements.txt

@@ -0,0 +1,2 @@
+PyQt5>=5.15.0
+pyinstaller>=6.0.0