DateTime error at Cloud functions response to data type conversion.

[gokcer]

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• I have searched the existing issues and confirm it has not been reported.
• I give permission for members of the FlutterFlow team to access and test my project for the sole purpose of investigating this issue.

Current Behavior

When we defined a cloud function return a data type, if data type contains datetime field, json response of cloud function is not converted to datetime.

Expected Behavior

Json response of cloud function should be correctly converted to datetime like string or number fields.

Steps to Reproduce

1. Create a data type (for example Order) having a field of datetime type.
2. Create a cloud function which returns Order list.
3. At cloud function return corresponding json data.
4. Call cloud function.
5. Check error at developer console of chrome (or running platform)

Reproducible from Blank

• The steps to reproduce above start from a blank project.

Bug Report Code (Required)

IT4olPLq25NIseFE7q6JcMdVryQQNkA4arsWm8pOGDsdF4iuPOxzafTsZRFCTubidHxhKEWKoEcHw+jwvuOTUcc3AE6CRqk71c5qcjvxeHi/aoSUDJGCRmhfBdpMGGKF0p6RmCNAOvZ2Sl0j3TmHevCQYB/vQ5P4Zwh9f6PHaOI=

Context

I am trying to return data type containing a datetime field from cloud functions.

Visual documentation

dart_sdk.js:11914 Uncaught (in promise) Error: TypeError: "2024-03-19T10:07:50.655268+00:00": type 'String' is not a subtype of type 'DateTime?'
at Object.throw\_ \[as throw\] (dart_sdk.js:11914:11)
at Object.\_failedAsCheck (dart_sdk.js:24571:15)
at dart_rti.Rti.new.\_generalNullableAsCheckImplementation (dart_sdk.js:24564:14)
at dart_rti.Rti.new.\_installSpecializedAsCheck (dart_sdk.js:24509:24)
at OrderStruct.fromMap (order_struct.dart:39:28)
at MappedListIterable.new. (home_page_widget.dart:109:51)
at MappedListIterable.new.elementAt (dart_sdk.js:34795:25)
at ListIterator.new.moveNext (dart_sdk.js:34596:55)
at JsIterator.next (dart_sdk.js:14044:21)
at List.of (dart_sdk.js:139635:18)
at MappedListIterable.new.toList (dart_sdk.js:34404:30)
at home_page_widget.\_HomePageWidgetState.new. (home_page_widget.dart:109:60)
at Generator.next ()
at dart_sdk.js:49722:33
at \_RootZone.runUnary (dart_sdk.js:49577:59)
at \_FutureListener.thenAwait.handleValue (dart_sdk.js:44704:29)
at handleValueCallback (dart_sdk.js:45304:49)
at \_Future.\_propagateToListeners (dart_sdk.js:45342:17)
at \[\_completeWithValue\] (dart_sdk.js:45183:23)
at async.\_AsyncCallbackEntry.new.callback (dart_sdk.js:45217:35)
at Object.\_microtaskLoop (dart_sdk.js:50026:13)
at \_startMicrotaskLoop (dart_sdk.js:50032:13)
at dart_sdk.js:45573:9

Additional Info

According to debugging using exported code, problem is caused by fromMap function of generated (DataType)Struct.dart class. It does not support parsing DateTime from string and expects an object but cloud function (and other systems) return datetime data as string.

static OrderStruct fromMap(Map data) => OrderStruct(
name: data\['name'\] as String?,
total: castToType(data\['total'\]),
date: data\['date'\] as DateTime?, <------------ Problematic line. Maybe should call DateTime.parse() instead of cast if value is string since json responses return string for datetime fields.
);

Environment

- FlutterFlow version: 4.1
- Platform: Any platform
- Browser name and version: Any
- Operating system and version affected: Any

[github-actions]

This issue is stale because it has been open for 7 days with no activity. If there are no further updates, a team member will close the issue.

[sebasortiz-dev]

Im having the same issue

[ignalauret]

Hey @gokcer thanks for your report. Could you share me the code of the Cloud Function that you are using so I can check out?

[gokcer]

Sure @ignalauret

Here it is:

const functions = require('firebase-functions');
const admin = require('firebase-admin');
// To avoid deployment errors, do not call admin.initializeApp() in your code

exports.orders = functions.region('us-west1').https.onCall(
  (data, context) => {
    // Write your code below!

    // Write your code above!
      return [{
        "id": 1,
        "date": "2024-03-19T10:07:50.655268+00:00",
        "name": "John Due",
        "total": 10
    }];
  }
);

[ignalauret]

Hey @gokcer thanks for the code. I was able to replicate the issue, and I'm not able to parse the Date as a String (like you have it) nor as a js Date object.
I'm sending a ticket to the Technical team to see if this is a bug, or if there is another way of encoding the dates that you should do on the function.
They will keep you updated on this thread, have a great day!

[gokcer]

Hi. Are there any progress about this bug? It blocks our implementations using DateTime.

Best regards..