This my sample UI, another image ,next one I want to post the value of dropdown to this api I am basically working on flutter as frontend and djangorest for backend and i am new to flutter.So basically i m working on feedback section in flutter where patient provides feedbacks for there clinicians by selecting there name from dropdown.I am getting the names in the dropdown through restapi which is provided in my code below.So what i want is when i select the particular clinician from dropdown ,i want to post the dropdown value back to restapi which is also shown in code below but i am getting "Instance of User".I want to map the clician_id as dropdownvalue value and post it back to backend through restapi this is the json body from api for dropdown.If further more information required i can provide.Please help me in this problem.!thanks
import 'package:flutter/material.dart';
import 'package:flutter/src/widgets/framework.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:my_thera/screens/main_screen_page.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
class ReviewsClinician extends StatefulWidget {
@override
State<ReviewsClinician> createState() => ReviewsClinicianState();
}
class User {
String staffName;
User({
required this.staffName,
});
User.fromJson(Map<String, dynamic> json) : staffName = json['staff_name'];
}
class UsersResponse {
final List<User> data;
const UsersResponse({
required this.data,
});
UsersResponse.fromJson(Map<String, dynamic> json)
: data = (json['clinician_visited'] as List<dynamic>)
.map((json) => User.fromJson(json))
.toList();
}
class ReviewsClinicianState extends State<ReviewsClinician> {
late Future<List<User>> _future;
User? _selectedUser;
@override
void initState() {
super.initState();
_future = _getUsers();
_getValue();
}
Future<List<User>> _getUsers() async {
const storage = FlutterSecureStorage();
var myJwt = await storage.read(key: "jwt");
var clientid = await storage.read(key: "client_id");
print(clientid);
var cliniccode = await storage.read(key: "clinic_code");
print(cliniccode);
final uri = Uri.parse('http://10.0.2.2:8000/api/v1/populate-data/');
final response = await http.get(
uri,
headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
'Authorization': 'JWT $myJwt',
'clinic_code': '$cliniccode'
},
);
print(response.body);
Map<String, dynamic> json = jsonDecode(response.body)['data'];
final usersResponse = UsersResponse.fromJson(json);
return usersResponse.data;
}
_getValue() {
setState(() {});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text("Clinician Feedback "),
centerTitle: true,
),
body: SingleChildScrollView(
// index: _stackIndex,
child: (Column(
// mainAxisAlignment: MainAxisAlignment.center,
children: [
const SizedBox(
height: 30,
),
FutureBuilder<List<User>>(
future: _future,
builder: (context, snapshot) {
if (snapshot.hasError) {
return Text('Error: ${snapshot.error}');
}
if (snapshot.data == null) {
return const CircularProgressIndicator();
}
return Padding(
padding: const EdgeInsets.all(12.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
SizedBox(
height: 64,
child: DropdownButton<User>(
hint: Container(
width: 150, //and here
child: const Text(
"Select your Clinican to rate",
style: TextStyle(
color: Color.fromARGB(255, 4, 2, 2)),
textAlign: TextAlign.end,
),
),
onChanged: (user) {
setState(() {
_selectedUser = user;
print(_selectedUser!.staffName);
});
},
value: _selectedUser,
items: [
...snapshot.data!.map(
(user) => DropdownMenuItem(
value: user,
child: Row(
children: [
Text(user.staffName),
],
),
),
)
],
),
),
],
),
);
}),
Container(
height: 50.0,
margin: const EdgeInsets.all(10),
child: ElevatedButton(
onPressed: () async {
const storage = FlutterSecureStorage();
var myJwt = await storage.read(key: "jwt");
var cliniccode = await storage.read(key: "clinic_code");
var clientId = await storage.read(key: "client_id");
var map = Map<String, String>();
map["rated_by"] = "$clientId";
map["clinician_id"] = this._selectedUser!.staffName;
final uri = Uri.parse(
'http://10.0.2.2:8000/api/v1/clinicianfeedback/');
//final response = await http.post(
// uri,
// headers: {
// 'Authorization': 'JWT $myJwt',
// 'clinic_code': '$cliniccode',
// },
// body: map,
// );
Map<String, String> headers = {
'Authorization': 'JWT $myJwt',
'clinic_code': '$cliniccode',
};
var request = http.MultipartRequest('POST', uri)
..fields.addAll(map);
request.headers.addAll(headers);
var response = await request.send();
if (response.statusCode == 200) {
final respStr = await response.stream.bytesToString();
final responseJson = json.decode(respStr);
print(responseJson);
Navigator.of(context).pushAndRemoveUntil(
MaterialPageRoute(builder: (context) => MainScreen()),
(route) => false);
Fluttertoast.showToast(
msg:
"Thank you for reaching out and providing us with valuable feedback.",
toastLength: Toast.LENGTH_LONG,
gravity: ToastGravity.TOP,
backgroundColor: Colors.green,
textColor: Colors.white,
fontSize: 16.0);
} else {
throw Exception('Failed to load api');
}
},
child: Ink(
decoration: BoxDecoration(
gradient: const LinearGradient(
colors: [
Color.fromARGB(0, 255, 255, 255),
Color.fromARGB(0, 111, 121, 142)
],
begin: Alignment.centerLeft,
end: Alignment.centerRight,
),
borderRadius: BorderRadius.circular(30.0)),
child: Container(
constraints:
const BoxConstraints(maxWidth: 250.0, minHeight: 50.0),
alignment: Alignment.center,
child: const Text(
"Submit Feedback",
textAlign: TextAlign.center,
style: const TextStyle(color: Colors.white, fontSize: 15),
),
),
),
),
),
const SizedBox(
height: 150,
),
],
)),
),
);
}
}
CodePudding user response：
As I see the DropDownMenuItem has an onTap method. So the given item knows which user it uses, so try something like:
...snapshot.data!.map(
(user) => DropdownMenuItem(
value: user,
onTap: () { _handleSelectedUser(); }
child: Row(
children: [
Text(user.staffName),
],
),
),
)
CodePudding user response：
Issue solved .It was my mistake regarding the issue stated,i forgot to pass the id regarding the dropdown value.