OnceSingleAsync<T> never maps the object

[mastertheef]

OnceSingleAsync method always returns an object with empty fields.

public class Model { public Id { get; set; } public string Name { get; set; } }

will return an object like

{Id: Empty.Guid; Name: ''}

[hieucodecraft]

Did the problem was solved? If not, please show your code when you call the OnceSingleAsync()

[claybrooks]

When I do .OnceSingleAsync<object>, I notice that the object returned is not flat. It's in a format like { "unique_id": {...}}, where {...} is the type I want OnceSingleAsync<T> to deserialize to and "unique_id" is unknown at the time of querying (it's generated when the record was added to the real time database). Since we only care about the data underneath the unique_id, and the unique_id will be different from record to record, there's no way to write a class hierarchy for the JSON deserializer.

The easiest way to overcome this is to apply a [JsonConverter(typeof(ConverterClassName))] to the class you are trying to deserialize to. Then, in the converter, you can handle the nested data properly.

Here's a link to the converter documentation: Custom Converter

Here's a link to a good solution for writing converters: Templated Converter

There may be a way to structure the query better to only return the data underneath the unique_id, but I couldn't find a way through the API.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

Closing the issue due to inactivity. Feel free to re-open