change to the buchungs system

Website/main.py

@@ -3714,38 +3714,46 @@ def run_tenant_provisioning_async(app, user_id, tenant_slug, school_name, user_e
 @app.route('/booking_payment_async', methods=['POST'])
 @login_required
 def booking_payment_async():
-    user_id = session.get("user_id")
-    user_email = session.get("email")
-    tenant_slug = _slugify_subdomain(request.form.get('tenant_slug'))
-    school_name = request.form.get('school_name', tenant_slug)
-
-    # Insert request record into instance_requests
-    req_client, req_col = _get_collection("instance_requests")
     try:
-        prov_doc = {
-            "user_id": user_id,
-            "tenant_slug": tenant_slug,
-            "school_name": school_name,
-            "provision_status": "pending",
-            "created_at": _utc_now_iso(),
-            "updated_at": _utc_now_iso()
-        }
-        prov_id = str(req_col.insert_one(prov_doc).inserted_id)
-    finally:
-        req_client.close()
+        user_id = session.get("user_id")
+        user_email = session.get("email")
+        tenant_slug = _slugify_subdomain(request.form.get('tenant_slug'))
+        school_name = request.form.get('school_name', tenant_slug)
 
-    # Start async worker passing prov_id
-    thread = threading.Thread(
-        target=run_tenant_provisioning_async,
-        args=(app._get_current_object(), user_id, tenant_slug, school_name, user_email, prov_id)
-    )
-    thread.start()
+        if not tenant_slug:
+            return jsonify({"success": False, "error": "Ungültige Subdomain angegeben."}), 400
 
-    return jsonify({
-        "success": True, 
-        "tenant_slug": tenant_slug, 
-        "request_id": prov_id
-    }), 200
+        # Datenbank-Eintrag erstellen...
+        req_client, req_col = _get_collection("instance_requests")
+        try:
+            prov_doc = {
+                "user_id": user_id,
+                "tenant_slug": tenant_slug,
+                "school_name": school_name,
+                "provision_status": "pending",
+                "created_at": _utc_now_iso(),
+                "updated_at": _utc_now_iso()
+            }
+            prov_id = str(req_col.insert_one(prov_doc).inserted_id)
+        finally:
+            req_client.close()
+
+        # Asynchronen Thread starten...
+        thread = threading.Thread(
+            target=run_tenant_provisioning_async,
+            args=(app._get_current_object(), user_id, tenant_slug, school_name, user_email, prov_id)
+        )
+        thread.start()
+
+        return jsonify({
+            "success": True, 
+            "tenant_slug": tenant_slug, 
+            "request_id": prov_id
+        }), 200
+
+    except Exception as e:
+        # WICHTIG: Fängt jegliche Python-Fehler ab und sendet sauberes JSON statt HTML-Crash
+        return jsonify({"success": False, "error": str(e)}), 500
 
 @app.route('/instance_request/status')
 def tenant_status():

Website/templates/schnell_buchung.html

@@ -481,20 +481,23 @@
                 body: formData,
                 headers: { 'Accept': 'application/json' }
             });
-
-            const result = await response.json();
-
-            if (!response.ok) {
+            
+            // Prüfen, ob der Server echtes JSON zurückgibt
+            const contentType = response.headers.get("content-type");
+            let result;
+            if (contentType && contentType.includes("application/json")) {
+                result = await response.json();
+            } else {
+                // Wenn der Server HTML schickt (z.B. Flask Debugger Error Page)
+                const rawText = await response.text();
+                console.error("Server hat kein JSON gesendet:", rawText);
+                throw new Error("Ein Serverfehler ist aufgetreten. Bitte prüfen Sie die Konsolenausgabe.");
+            }
+            
+            if (!response.ok || !result.success) {
                 throw new Error(result.error || 'Es gab ein Problem bei der Buchung.');
             }
 
-            // Erfolg: Formular verstecken, Ladebildschirm zeigen
-            formState.style.display = 'none';
-            loadingState.style.display = 'block';
-
-            // Starte Polling
-            startPolling(tenantSlug);
-
         } catch (error) {
             errorAlert.textContent = error.message;
             errorAlert.style.display = 'block';