How to convert Flutter Date to TimeStamp?

Question

I need to send a post request to the REST API where it includes a Date value. However the REST API and MySQL accepts a Timestamp. Below is how I prepare my current date

User user = User(
      name: nameTxtController.text,
      email: emailTxtController.text,
      phone: mobileTxtController.text,
      userLanguage: userLanguage,
      userRights: userRight,
      lastUpdated: DateTime.now(),
      dateCreated: DateTime.now()

    );

How to convert this to Timestamp ?

Answer 1

1) On pubspec.yaml

Import cloud_firestore plugin with last version

https://pub.dartlang.org/packages/cloud_firestore

dependencies:
 flutter:
  sdk: flutter

 # The following adds the Cupertino Icons font to your application.
 # Use with the CupertinoIcons class for iOS style icons.
 cupertino_icons: ^0.1.2`enter code here`

 cloud_firestore: ^0.9.13 //import this, with last version

2) On your file.dart

import 'package:cloud_firestore/cloud_firestore.dart';

3) DateTime to TimeStamp / TimeStamp to DateTime

DateTime currentPhoneDate = DateTime.now(); //DateTime

Timestamp myTimeStamp = Timestamp.fromDate(currentPhoneDate); //To TimeStamp

DateTime myDateTime = myTimeStamp.toDate(); // TimeStamp to DateTime

print("current phone data is: $currentPhoneDate");
print("current phone data is: $myDateTime");

4) Console

I/flutter (15177): current phone data is: 2019-04-17 11:28:26.953530
I/flutter (15177): current phone data is: 2019-04-17 11:28:26.953530

With your code

User user = User(
  name: nameTxtController.text,
  email: emailTxtController.text,
  phone: mobileTxtController.text,
  userLanguage: userLanguage,
  userRights: userRight,
  lastUpdated: myTimeStamp //here
  dateCreated: myTimeStamp //here
);

Answer 2

Just do the following

User user = User(
      name: nameTxtController.text,
      email: emailTxtController.text,
      phone: mobileTxtController.text,
      userLanguage: userLanguage,
      userRights: userRight,
      lastUpdated: DateTime.now().millisecondsSinceEpoch,
      dateCreated: DateTime.now().millisecondsSinceEpoch

    );

for this to work, your user.lastUpdated and user.dateCreated should be of type int in your model (bean if you are from Java background) class