lab4 kiri

.shii/lab4/app.py

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+import re
+from datetime import datetime
+
+from flask import Flask, render_template, request, redirect, url_for, flash
+from flask_sqlalchemy import SQLAlchemy
+
+app = Flask(__name__)
+app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///accounting.db'
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+app.config['SECRET_KEY'] = "lab4_secret_key"
+
+db = SQLAlchemy(app)
+
+
+# ---------------- МОДЕЛЬ ----------------
+
+class Employee(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    fullname = db.Column(db.String(120), nullable=False)
+    salary = db.Column(db.Integer, nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+
+    def __repr__(self):
+        return f'<Employee {self.id}>'
+
+
+# ----------- ВАЛИДАЦИЯ БЭКЕНДА ------------
+
+def validate_employee(fullname: str, salary: str):
+    errors = []
+
+    fullname = fullname.strip()
+
+    if not fullname:
+        errors.append("ФИО не может быть пустым")
+    elif len(fullname) < 5 or len(fullname) > 120:
+        errors.append("ФИО должно быть от 5 до 120 символов")
+    elif not re.fullmatch(r"[A-Za-zА-Яа-яЁё\s\-\']+", fullname):
+        errors.append("ФИО может содержать только буквы, пробелы, дефисы и апострофы")
+
+    if not salary:
+        errors.append("Зарплата обязательна")
+    else:
+        try:
+            salary = int(salary)
+            if salary <= 0 or salary > 10_000_000:
+                errors.append("Зарплата должна быть от 1 до 10 000 000")
+        except:
+            errors.append("Зарплата должна быть числом")
+
+    return errors
+
+
+# ---------------- РОУТЫ ----------------
+
+@app.route("/")
+def index():
+    return render_template("index.html")
+
+
+@app.route("/employees")
+def employees():
+    items = Employee.query.order_by(Employee.created_at.desc()).all()
+    total_salary = sum(e.salary for e in items)
+    return render_template("employees.html", employees=items, total_salary=total_salary)
+
+
+@app.route("/create", methods=["GET", "POST"])
+def create_employee():
+    if request.method == "POST":
+        fullname = request.form.get("fullname", "")
+        salary = request.form.get("salary", "")
+
+        errors = validate_employee(fullname, salary)
+        if errors:
+            for e in errors:
+                flash(e, "error")
+            return render_template("create_employee.html", fullname=fullname, salary=salary)
+
+        employee = Employee(fullname=fullname.strip(), salary=int(salary))
+
+        try:
+            db.session.add(employee)
+            db.session.commit()
+            return redirect(url_for("employees"))
+        except:
+            return render_template("error.html", msg="Ошибка добавления")
+
+    return render_template("create_employee.html")
+
+
+@app.route("/employees/<int:id>")
+def employee_detail(id):
+    emp = Employee.query.get_or_404(id)
+    return render_template("employee_detail.html", emp=emp)
+
+
+@app.route("/employees/<int:id>/delete")
+def employee_delete(id):
+    emp = Employee.query.get_or_404(id)
+    try:
+        db.session.delete(emp)
+        db.session.commit()
+        return redirect(url_for("employees"))
+    except:
+        return render_template("error.html", msg="Ошибка удаления")
+
+
+@app.route("/employees/<int:id>/update", methods=["GET", "POST"])
+def employee_update(id):
+    emp = Employee.query.get_or_404(id)
+
+    if request.method == "POST":
+        fullname = request.form.get("fullname", "")
+        salary = request.form.get("salary", "")
+
+        errors = validate_employee(fullname, salary)
+        if errors:
+            for e in errors:
+                flash(e, "error")
+            return render_template("employee_update.html", emp=emp)
+
+        emp.fullname = fullname.strip()
+        emp.salary = int(salary)
+
+        try:
+            db.session.commit()
+            return redirect(url_for("employees"))
+        except:
+            return render_template("error.html", msg="Ошибка обновления")
+
+    return render_template("employee_update.html", emp=emp)
+
+
+if __name__ == "__main__":
+    with app.app_context():
+        db.create_all()
+    app.run(debug=True)