Custom Objects and Pointers to a CustomObject

[buckettt]

I have a Custom Object (Activity) that I want to have a Pointer to another Custom Object (Spot).
I retrieve it as follows.

    queryBuilder = QueryBuilder<Activity>(Activity())
      ..orderByDescending("createdAt")
      ..includeObject([
        "mySpot", //this is the pointer
      ])

This works fine however mySpot is as a ParseObject whereas what I need is ParseObject as a CutomObject.

However when I setup my getter/setter for mySpot as a custom object as below

class Activity extends ParseObject implements ParseCloneable {
...
  static const String _keyTableName = 'Activity';
  static const String _keySpot = 'mySpot';
  
  Spot get myspot => get<Spot>(_keySpot) as Spot;
  set myspot(Spot s) => set<Spot>(_keySpot, s);
}

I get an error:
type 'ParseObject' is not a subtype of type 'Spot' in type cast

Whats the best way to cast a pointer to a custom object? Or is there a better way of doing this?

Edit: Spot extends ParseObject

[phillwiggins]

Hey It is a slight annoyance that this happens. It's mainly due to the lack of reflection in Flutter. I don't think there is a better version of this right now.

…

On Sat, Nov 9, 2019, 21:09 buckettt ***@***.***> wrote: I have a Custom Object (Activity) that I want to have a Pointer to another Custom Object (Spot). I retrieve it as follows. queryBuilder = QueryBuilder<Activity>(Activity()) ..orderByDescending("createdAt") ..includeObject([ "mySpot", //this is the pointer ]) This works fine however mySpot is as a ParseObject whereas what I need is ParseObject as a CutomObject. However when I setup my getter/setter for mySpot as a custom object as below class Activity extends ParseObject implements ParseCloneable { ... static const String _keyTableName = 'Activity'; static const String _keySpot = 'mySpot'; Spot get myspot => get<Spot>(_keySpot) as Spot; set myspot(Spot s) => set<Spot>(_keySpot, s); } I get an error: type 'ParseObject' is not a subtype of type 'Spot' in type cast Whats the best way to cast a pointer to a custom object? Or is there a better way of doing this? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#287?email_source=notifications&email_token=AB4CPXVSATLDL6W63USJXC3QS4RI3A5CNFSM4JLJSOA2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4HYGNKTA>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB4CPXTZFGETIUXC2LFT6LTQS4RI3ANCNFSM4JLJSOAQ> .

[buckettt]

OK thanks, I guess that means it is impossible then?

[phillwiggins]

It's not impossible. How are you accessing it at the moment. Do you have a list of 'mySpot' or just a single object. Usually single objects are fine. It's mainly when returning a list that we found a struggle

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On Sun, Nov 10, 2019, 08:49 buckettt ***@***.***> wrote: OK thanks, I guess that means it is impossible then? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#287?email_source=notifications&email_token=AB4CPXXMLIQVUQG2G3EXI63QS7DJ7A5CNFSM4JLJSOA2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDUYNRY#issuecomment-552175303>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB4CPXR7BIVDVMLWPDUT6X3QS7DJ7ANCNFSM4JLJSOAQ> .

[buckettt]

'mySpot' is just a pointer to a single object. I'm accessing it using the query above then simply doing:

var response = await queryBuilder.query();
if (response.success) {
    var a = response.results[0].myspot;

}

[phillwiggins]

Yes, I see the issue. The problem is the list. The best thing to do is create an empty list containing mySpot and iterate through the response list and cast them individually. We don't have a fix for this right now but hopefully will shortly.

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On Sun, Nov 10, 2019, 09:28 buckettt ***@***.***> wrote: 'mySpot' is just a pointer to a single object. I'm accessing it using the query above then simply doing: var response = await queryBuilder.query(); if (response.success) { var a = response.results[0].myspot; } — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#287?email_source=notifications&email_token=AB4CPXUTGG7KPBDH7Y7QTC3QS7H47A5CNFSM4JLJSOA2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDUZCEQ#issuecomment-552177938>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB4CPXRFEFN5UU4ZZS6O6FLQS7H47ANCNFSM4JLJSOAQ> .

[buckettt]

No problem, thanks for your help.