Initial project import: Flask app, templates, init script, README

app.py

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+from flask import Flask, render_template, request, redirect, url_for
+from flask_sqlalchemy import SQLAlchemy
+import os
+import re
+
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+DB_PATH = os.path.join(BASE_DIR, 'anmeldung.db')
+
+app = Flask(__name__)
+app.config['SQLALCHEMY_DATABASE_URI'] = f'sqlite:///{DB_PATH}'
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+
+db = SQLAlchemy(app)
+
+
+class Adresse(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    vorname = db.Column(db.String(100), nullable=False)
+    nachname = db.Column(db.String(100), nullable=False)
+    strasse = db.Column(db.String(200), nullable=False)
+    hausnummer = db.Column(db.String(50), nullable=True)
+    plz = db.Column(db.String(20), nullable=False)
+    ort = db.Column(db.String(100), nullable=False)
+    land = db.Column(db.String(50), default='Deutschland')
+    telefon_vorwahl = db.Column(db.String(20))
+    telefon_nummer = db.Column(db.String(50))
+    email = db.Column(db.String(200))
+
+
+class Frage(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    text = db.Column(db.String(500), nullable=False)
+
+
+class Antwort(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    adresse_id = db.Column(db.Integer, db.ForeignKey('adresse.id'), nullable=False)
+    frage_id = db.Column(db.Integer, db.ForeignKey('frage.id'), nullable=False)
+    text = db.Column(db.String(1000), nullable=True)
+
+
+@app.route('/', methods=['GET', 'POST'])
+def index():
+    if request.method == 'POST':
+        # Adresse speichern
+        vorname = request.form.get('vorname', '').strip()
+        nachname = request.form.get('nachname', '').strip()
+        strasse = request.form.get('strasse', '').strip()
+        hausnummer = request.form.get('hausnummer', '').strip()
+        plz = request.form.get('plz', '').strip()
+        ort = request.form.get('ort', '').strip()
+        land = request.form.get('land', 'Deutschland').strip()
+        telefon_vorwahl = request.form.get('telefon_vorwahl', '').strip()
+        telefon_nummer = request.form.get('telefon_nummer', '').strip()
+        email = request.form.get('email', '').strip()
+        # server-side E-Mail Validierung (einfache Prüfung)
+        errors = {}
+        email_re = re.compile(r"[^@]+@[^@]+\.[^@]+")
+        if email:
+            if not email_re.match(email):
+                errors['email'] = 'Ungültige E-Mail-Adresse'
+        # PLZ Validierung: genau 5 Ziffern
+        if plz:
+            if not re.fullmatch(r"\d{5}", plz):
+                errors['plz'] = 'Postleitzahl muss genau 5 Ziffern haben'
+
+        if errors:
+            fragen = Frage.query.all()
+            # pass form data back to template so fields are preserved
+            form = request.form.to_dict()
+            return render_template('index.html', fragen=fragen, errors=errors, form=form)
+
+        adresse = Adresse(
+            vorname=vorname,
+            nachname=nachname,
+            strasse=strasse,
+            hausnummer=hausnummer,
+            plz=plz,
+            ort=ort,
+            land=land,
+            telefon_vorwahl=telefon_vorwahl,
+            telefon_nummer=telefon_nummer,
+            email=email,
+        )
+        db.session.add(adresse)
+        db.session.commit()
+
+        # Antworten speichern
+        fragen = Frage.query.all()
+        for frage in fragen:
+            key = f'frage_{frage.id}'
+            antwort_text = request.form.get(key, '').strip()
+            antwort = Antwort(adresse_id=adresse.id, frage_id=frage.id, text=antwort_text)
+            db.session.add(antwort)
+        db.session.commit()
+
+        # Nach erfolgreichem Speichern weiterleiten
+        return redirect(url_for('danke', id=adresse.id))
+
+    # GET: Formular anzeigen
+    fragen = Frage.query.all()
+    return render_template('index.html', fragen=fragen)
+
+
+@app.route('/danke')
+def danke():
+    id = request.args.get('id')
+    adresse = Adresse.query.get(id)
+    return render_template('danke.html', adresse=adresse)
+
+
+if __name__ == '__main__':
+    # Ensure DB exists
+    if not os.path.exists(DB_PATH):
+        db.create_all()
+    app.run(debug=True)