I want to dynamically include or exclude a field in a kotlin class based on certain conditions at ru...

# android

[Jabez Magomere]

I want to dynamically include or exclude a field in a kotlin class based on certain conditions at run time before making a POST request using Retrofit and Gson, anyone has ideas on how to achieve this dynamically? I've tried using the expose annotation but it can't accept run time variables.

[wasyl]

Make it nullable and configure type converter (somehow) to not serialize null fields maybe?

[Jabez Magomere]

@wasyl i have a couple of instances where i may want to send null fields to the backend.

[wasyl]

You could try with a wrapper type then, something like Optional<T?>?, and have a custom type adapter for it

[wasyl]

Such that if optionalValue = null you omit it, but if it’s optionalValue = Optional.of(null) then you send it

[Jabez Magomere]

@wasyl would be a good solution, the only problem is that this only works on min API level 24 and i'm working on 22

[wasyl]

Then create your own wrapper 🤷‍♂️