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ANGULAR $HTTP.POST CHANGING DATE TO UTC DATE
Ask Question
up vote 15 down vote favorite
I was trying to post some data to my REST api which has date. Now while I debug,
my date parameter is a JS Date object with correct date in my timezone: Tue Apr
04 2017 00:00:00 GMT+0530
after it leaves my code, and I see the same in network tab, it is converted to
UTC date: "2017-04-03T18:30:00.000Z"
I searched for the solution according to which I need to include locale file of
angular in my index.html which I did:
<script type="text/javascript" src="resources/js/angular/angular-locale_en-in.js"></script>
but it doesn't help. I've seen solutions like adding date format to filter or
something, but I want a global solution. Any help? Thanks :)
javascript angularjs internationalization timezone
share|improve this question
asked Apr 19 at 13:17
pranavjindal999
682519
1
Not clear what specific problem is or what you are trying to change – charlietfl
Apr 19 at 13:22
1
I'm selecting 4th April on my UI and server is getting 3 April in UTC. my rest
apis are third party and can not change them. I want to handle this issue
globally – pranavjindal999 Apr 19 at 13:26
1
but when you convert utc back to local will be the same .. 4th april. Still not
clear what objective is – charlietfl Apr 19 at 13:28
1
that is what I'm saying, I cannot ask api to convert utc date to local timezone.
they want date in local timezone already. – pranavjindal999 Apr 19 at 13:29
2
or modify Date.prototype.toJSON() which is what creates that string. But
modifying native api is not a good practice – charlietfl Apr 19 at 14:16
| show 6 more comments
7 ANSWERS 7
active oldest votes
up vote 6 down vote
+25
Handling date, time, and timezone have confused me too. May be this answer gives
you some insight on how you can handle them.
Try the following code in Chrome's developer console and see how same date is
presented in different formats:
var date = new Date();
date.toISOString(); // "2017-04-29T09:54:28.714Z"
date.toGMTString(); //"Sat, 29 Apr 2017 09:54:28 GMT"
date.toLocalString(); //"4/29/2017, 3:24:28 PM"
Any date that you create on client always records the date at zero timezone
offset i.e. UTC+/-00:00 Z. For simplicity you may think UTC and GMT as same.
When it comes to display purpose the same date is presented as per the browser's
timezone. If you do console.log (date) it'll output Sat Apr 29 2017 15:24:28
GMT+0530 (IST) but that doesn't mean that the internal recording of the date is
as per browser's timezone. It's just presented on screen/console as per
browser's timezone.
Look at date representations not as being converted from one timezone to another
but look at them as different representation of the same date. In your browser
it is represented as GMT+0530 offset and when it is sent to server it is the
same date at zero timezone offset.
As per your comment, if you choose 4th Apr at 00:00 AM in GMT+0530 timezone,
internally it'll be 3rd Apr at 18:30 PM in at GMT+0 i.e. zero timezone offset.
Let it go to server as it is. When you need to use this date, it comes back from
server as 3rd Apr and it'll be displayed in browser as per the browser's
timezone offset. There is no conversion involved, it is one date with different
representation.
I once asked a related question, may be this adds more clarification.
And overall, this answer is still same as @geminiousgoel and @charlietfl
answers.
share|improve this answer
edited May 23 at 12:18
Community♦
11
answered Apr 30 at 10:47
Ritesh Jagga
511318
add a comment |
up vote 4 down vote
Passing UTC date to server is desired behavior. The client APIs are supposed to
handle UTC time instead of assuming the dates are all local dates.
But anyways, you can convert the date to string based on local time zone, and
pass the string to server.
share|improve this answer
answered May 1 at 18:40
Dada
513
Good idea @Dada – Anas May 17 at 19:38
add a comment |
up vote 3 down vote
Like charlietfl suggested, probably the global hack would be to override
Date.prototype.toJSON() method, but that's not a good practice.
Where are you using your $http.post call? The best place to submit an $http
request would be in a service. If you use a service, then I suggest you to
enwrap your public service API, so that you could have "public" and "private"
methods: these could be utilities to perform common operations, such as data
transformations, validations..
angular.service('bookStoreService', ['$http'], function($http) {
var normalizeBooks = function(booksArray){
booksArray.forEach(function(book){
// do something on the book
});
};
var updateBooks = function(books){
normalizeBooks(books);
$http.post('myurl', books);
};
return {
updateBooks : updateBooks
};
});
share|improve this answer
edited Apr 27 at 11:07
answered Apr 27 at 10:57
Redd Sanso
414
1
that is what I don't want to do.. I simply want angular to not do these
transformations while posting. – pranavjindal999 Apr 29 at 5:29
1
Then, an $http interceptor is your solution – Redd Sanso Apr 30 at 18:55
Read the section "Transforming requests and responsese" here:
docs.angularjs.org/api/ng/service/$http – Redd Sanso May 10 at 21:54
add a comment |
up vote 3 down vote
Scenario :
Send date from UI into API call as an epoch time (UNIX Time) instead of date
string. You can use getTime() method to convert the date into epoch time.
var dateStr = "Tue Apr 04 2017 00:00:00 GMT+0530";
var dateEpoch = new Date(dateStr).getTime();
console.log(dateEpoch); // 1491244200000 (Local Time)
Run code snippetHide results
Expand snippet
At receiver end, they have to convert this epoch time (UNIX time) into Date
again.It will give the same local date\time that pass from the UI.
Sample screenshot
share|improve this answer
answered May 1 at 16:24
Rohit Jindal
6,42553159
thank you for your answer, but that did not help. I've no control over API.
– pranavjindal999 May 1 at 16:35
I am talking that the API team should handle at their end. – Rohit Jindal May 1
at 16:36
yes that is what I'm saying.. API team is third party.. I do not have control
over API.. I somehow need a global solution so that the date I select is the
date sent at server – pranavjindal999 May 1 at 16:38
Then how you will get the call back with some result. API team have to send
right ?. they have to make some changes at their end as well – Rohit Jindal May
1 at 16:42
add a comment |
up vote 3 down vote
i think you just can pass it as string (if the api you use accept strings) with
the format you need, let say "Tue Apr 04 2017 00:00:00 GMT+0530" and save it in
back-end as string and then when you retrieve it, it will be string and so it
will not be changed in any way.
share|improve this answer
answered May 2 at 7:25
Ahmad Abo Saa
1687
add a comment |
up vote 2 down vote
Jindal saab, It will work like this. When we select any date with date picker or
just pass any value it takes the original local date but when we pass that value
further it converts it into UTC, thereafter it needs to convert to local zone
again at receiving end. Database saves date-time in UTC format.
share|improve this answer
answered Apr 27 at 8:54
geminiousgoel
3101414
add a comment |
up vote 2 down vote
Did you added the angular-locale_en-in.js library to your app? Something like
this....
angular.module('myAngularApp', [
'ngLocale'])
Otherwise, the js library won't have any effect in your angular application.
share|improve this answer
answered Apr 28 at 18:38
Gi1ber7
198211
yes I did injected the same – pranavjindal999 Apr 29 at 5:30
add a comment |
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