I've run into a problem where the app says 'User not found. Please check credentials.' although the credentials used is for user in the profiles user_profiles table. Is this because response of the query to the database is a list, or something else? I've also tried adding the .single() command and got the error "Login failed: PostgrestException(message: JSON object requested, multiple (or no) rows returned, code: PGRST116, details: The result contains 0 rows, hint: null)". I've attached the image of the user_profiles table in the database. Image of the supabase database user_profiles table
Main file
import 'dart:async';import 'package:flutter/material.dart';import 'package:supabase_flutter/supabase_flutter.dart';class CustomLoginPage extends StatefulWidget { const CustomLoginPage({Key? key}) : super(key: key); @override _CustomLoginPageState createState() => _CustomLoginPageState();}class _CustomLoginPageState extends State<CustomLoginPage> { final TextEditingController _firstNameController = TextEditingController(); final TextEditingController _lastNameController = TextEditingController(); final TextEditingController _idNumberController = TextEditingController(); bool _isLoading = false; Future<void> _signIn() async { setState(() { _isLoading = true; }); final client = Supabase.instance.client; try { final response = await client .from('user_profile') .select() .eq('first_name', _firstNameController.text.trim()) .eq('last_name', _lastNameController.text.trim()) .eq('id_number', _idNumberController.text.trim()) //.single(); if (response.isNotEmpty) { // Handle successful authentication. if (context.mounted) { Navigator.of(context).pushReplacementNamed('/account'); } } else { // Handle user not found. if (context.mounted) { ScaffoldMessenger.of(context).showSnackBar( const SnackBar( content: Text('User not found. Please check your credentials.'), backgroundColor: Colors.red, ), ); } } } catch (err) { if (context.mounted) { ScaffoldMessenger.of(context).showSnackBar( SnackBar( content: Text('Login failed: ${err.toString()}'), backgroundColor: Theme.of(context).colorScheme.error, ), ); } } if (context.mounted) { setState(() { _isLoading = false; }); } } void _showSnackBar(String message) { if (mounted) { ScaffoldMessenger.of(context).showSnackBar( SnackBar( content: Text(message), backgroundColor: Theme.of(context).colorScheme.error, ), ); } } @override void dispose() { _firstNameController.dispose(); _lastNameController.dispose(); _idNumberController.dispose(); super.dispose(); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar(title: const Text('Custom Sign In')), body: ListView( padding: const EdgeInsets.all(16), children: [ TextFormField( controller: _firstNameController, decoration: const InputDecoration(labelText: 'First Name'), ), TextFormField( controller: _lastNameController, decoration: const InputDecoration(labelText: 'Last Name'), ), TextFormField( controller: _idNumberController, decoration: const InputDecoration(labelText: 'ID Number'), ), const SizedBox(height: 20), ElevatedButton( onPressed: _isLoading ? null : _signIn, child: Text(_isLoading ? 'Loading...' : 'Sign In'), ), ], ), ); }}Your help is much appreciated
The app should be able to read the user_profiles table and if there is a row that matches the login credentials, then sign in should be successful and the user should be directed to the account page.