import 'package:flutter/material.dart'; import 'package:http/http.dart' as http; import 'dart:convert'; void main() { runApp(const FeedbackApp()); } class FeedbackApp extends StatelessWidget { const FeedbackApp({super.key}); @override Widget build(BuildContext context) { return MaterialApp( title: 'Feedback App', theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue), useMaterial3: true, ), home: const FeedbackForm(), ); } } class FeedbackForm extends StatefulWidget { const FeedbackForm({super.key}); @override State createState() => _FeedbackFormState(); } class _FeedbackFormState extends State { final _formKey = GlobalKey(); final TextEditingController _nameController = TextEditingController(); final TextEditingController _emailController = TextEditingController(); final TextEditingController _feedbackController = TextEditingController(); int _rating = 3; bool _isSubmitting = false; String? _submitMessage; bool _isSuccess = false; Future _submitFeedback() async { if (_formKey.currentState!.validate()) { setState(() { _isSubmitting = true; _submitMessage = null; }); try { final response = await http.post( Uri.parse('http://localhost:8000/api/feedback'), headers: {'Content-Type': 'application/json'}, body: jsonEncode({ 'name': _nameController.text, 'email': _emailController.text, 'feedback': _feedbackController.text, 'rating': _rating, }), ); if (response.statusCode == 200) { setState(() { _isSuccess = true; _submitMessage = 'Feedback submitted successfully!'; _nameController.clear(); _emailController.clear(); _feedbackController.clear(); _rating = 3; }); } else { setState(() { _isSuccess = false; _submitMessage = 'Failed to submit feedback. Please try again.'; }); } } catch (e) { setState(() { _isSuccess = false; _submitMessage = 'Error: ${e.toString()}'; }); } finally { setState(() { _isSubmitting = false; }); } } } @override void dispose() { _nameController.dispose(); _emailController.dispose(); _feedbackController.dispose(); super.dispose(); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: const Text('Feedback Form'), ), body: Padding( padding: const EdgeInsets.all(16.0), child: Form( key: _formKey, child: SingleChildScrollView( child: Column( children: [ TextFormField( controller: _nameController, decoration: const InputDecoration( labelText: 'Name', border: OutlineInputBorder(), ), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter your name'; } return null; }, ), const SizedBox(height: 16), TextFormField( controller: _emailController, decoration: const InputDecoration( labelText: 'Email', border: OutlineInputBorder(), ), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter your email'; } if (!RegExp(r'^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$').hasMatch(value)) { return 'Please enter a valid email'; } return null; }, ), const SizedBox(height: 16), TextFormField( controller: _feedbackController, decoration: const InputDecoration( labelText: 'Feedback', border: OutlineInputBorder(), ), maxLines: 5, validator: (value) { if (value == null || value.isEmpty) { return 'Please enter your feedback'; } return null; }, ), const SizedBox(height: 16), Text( 'Rating: $_rating', style: Theme.of(context).textTheme.titleMedium, ), Slider( value: _rating.toDouble(), min: 1, max: 5, divisions: 4, label: _rating.toString(), onChanged: (value) { setState(() { _rating = value.round(); }); }, ), const SizedBox(height: 24), if (_submitMessage != null) Text( _submitMessage!, style: TextStyle( color: _isSuccess ? Colors.green : Colors.red, ), ), const SizedBox(height: 16), ElevatedButton( onPressed: _isSubmitting ? null : _submitFeedback, child: _isSubmitting ? const CircularProgressIndicator() : const Text('Submit Feedback'), ), ], ), ), ), ), ); } } name: feedback_app description: A Flutter app for collecting feedback with FastAPI backend. publish_to: 'none' version: 1.0.0+1 environment: sdk: '>=3.0.0 <4.0.0' dependencies: flutter: sdk: flutter http: ^0.13.5 cupertino_icons: ^1.0.2 dev_dependencies: flutter_test: sdk: flutter flutter_lints: ^2.0.0 flutter: uses-material-design: true from fastapi import FastAPI, HTTPException from pydantic import BaseModel from fastapi.middleware.cors import CORSMiddleware app = FastAPI() # Configure CORS app.add_middleware( CORSMiddleware, allow_origins=["*"], allow_credentials=True, allow_methods=["*"], allow_headers=["*"], ) class Feedback(BaseModel): name: str email: str feedback: str rating: int feedback_db = [] @app.post("/api/feedback") async def submit_feedback(feedback: Feedback): try: feedback_db.append(feedback.dict()) return {"message": "Feedback received successfully"} except Exception as e: raise HTTPException(status_code=400, detail=str(e)) @app.get("/api/feedback") async def get_feedback(): return feedback_db fastapi>=0.95.0 uvicorn>=0.21.1 pydantic>=1.10.4