array with relations

[aBuder]

Hi,

how I can get the relations of an array. So I have an user class and this class has field restriction with an array of relations. How I can get the data?

[ { "__type": "Pointer", "className": "Restriction", "objectId": "l15bD1WdrJ" }, { "__type": "Pointer", "className": "Restriction", "objectId": "bD2hGsKetL" } ]

[RodrigoSMarques]

Hi @aBuder .

Try

    final List<ParseObject> restrinctions =
        parseObject.get<List<ParseObject>>(keyFieldName);

    for (final ParseObject restrinction in restrinctions) {
      print(restrinction.objectId);
    }

[aBuder]

@RodrigoSMarques

I found an solution.

That breaks

List<ParseObject> restrictions = [];

void fetchRestrictions() async {
    List<ParseObject> restrictions = user?.get<List<ParseObject>>('restriction');
    this.restrictions = restrictions;
}

Log

The application is paused in the debugger after an exception was thrown.
Reloaded 7 of 704 libraries.
[VERBOSE-2:shell.cc(184)] Dart Error: Unhandled exception:
type 'List<dynamic>' is not a subtype of type 'List<ParseObject>'
#0      UserProvider.fetchRestrictions (package:trainer/provider/user_provider.dart:34:24)
<asynchronous suspension>
#1      new UserProvider (package:trainer/provider/user_provider.dart:14:5)
#2      UsersScreen.build.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:trainer/screen/users/users_screen.dart:111:30)
#3      MaterialPageRoute.buildPage (package:flutter/src/material/page.dart:87:27)
#4      _ModalScopeState.build.<anonymous closure> (package:flutter/src/widgets/routes.dart:666:43)
#5      Builder.build (package:flutter/src/widgets/basic.dart:6427:41)
#6      StatelessElement.build (package:flutter/src/widgets/framework.dart:3974:28)
#7      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3924:15)
#8      Element.rebuild (package:flutter/src/widgets/framework.dart:3721:5)
#9      StatelessElement.update (package:flutter<…>

The following code works very well :-)

List<ParseObject> restrictions = [];

void fetchRestrictions() async {
    final restrictions = user?.get<List<ParseObject>>('restriction');
    this.restrictions.clear();
    for (final ParseObject restriction in restrictions) {
      this.restrictions.add(restriction);
    }
}