how can i make post method in flutter? - json

Question

How can i make post method in flutter for json like this
{
"app_id": "3djdjkdjde",
"include_external_user_ids": ["88"],
"contents": {"en": "your order is created"}
}
as you see its json inside json my problem in contents it's has a json as its value
i made this model with post method but i don't know how can i parse content you can see i make it's value null for now
it's okay if contents with static message no need for dynamic value in this time
import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;
Notifications notificationsFromJson(String str) => Notifications.fromJson(json.decode(str));
String notificationsToJson(Notifications data) => json.encode(data.toJson());
class Notifications {
String appId;
List<String> includeExternalUserIds;
Contents contents;
Notifications({
this.appId,
this.includeExternalUserIds,
this.contents,
});
factory Notifications.fromJson(Map<String, dynamic> json) => new Notifications(
appId: json["app_id"],
includeExternalUserIds: new List<String>.from(json["include_external_user_ids"].map((x) => x)),
contents: Contents.fromJson(json["contents"]),
);
Map<String, dynamic> toJson() => {
"app_id": appId,
"include_external_user_ids": new List<dynamic>.from(includeExternalUserIds.map((x) => x)),
"contents": contents.toJson(),
};
static Future<bool> postNotification(serviceUri, notificationData) async {
var client = new http.Client();
bool result = false;
try {
final Map<String, String> _notificationData = {
'app_id': notificationData['app_id'].toString(),
'include_external_user_ids': orderData['include_external_user_ids'].toString(),
"contents": null,
};
await client.post(serviceUri,
body: json.encode(_notificationData),
headers: { 'Authorization' : 'Bearer ' + notificationData['Token'], "Content-Type": "application/json"}
)
.then((http.Response response) {
var responseModel = json.decode(response.body);
if(responseModel != null && responseModel['status'] == true) {
result = true;
} else {
result = false;
}
});
}
catch(e) {
result = false;
}
finally {
client.close();
}
return result;
}
}
class Contents {
String en;
Contents({
this.en,
});
factory Contents.fromJson(Map<String, dynamic> json) => new Contents(
en: json["en"],
);
Map<String, dynamic> toJson() => {
"en": en,
};
}
thanks

Answer 1

Future<Map<String, dynamic>> postRequest(String url, Map jsonMap) async{
print('$url , $jsonMap');
HttpClient httpClient = new HttpClient();
HttpClientRequest request = await httpClient.postUrl(Uri.parse(url));
request.headers.set('content-type', 'application/json');
request.add(utf8.encode(json.encode(jsonMap)));
HttpClientResponse response = await request.close();
String reply = await response.transform(utf8.decoder).join();
print(reply);
httpClient.close();
Map<String, dynamic>map = json.decode(reply);
return map;
}
Add this http: ^0.12.0+1 in your pubspec.yaml file