Exclude class discriminator

[P1NG2WIN]

Right now in Json { } we cannot disable write classDiscriminator. In source code i found that class discriminator can be ignored if we change writePolymorphic boolean inside encodePolymorphically in StreamingJsonEncoder. Can i somehow change it without fully fork your library and change all layers? Maybe somehow with extension

[Dominaezzz]

You can skip the writing of the classDiscriminator by using the serializer of the child class instead of the base class.

[P1NG2WIN]

You can skip the writing of the classDiscriminator by using the serializer of the child class instead of the base class.

Can you provide example?

[sandwwraith]

val data = ChildClass("...")
Json.encodeToString<ParentClass>(data) // discriminator written
Json.encodeToString<ChildClass>(data) // discriminator omitted

[P1NG2WIN]

In my case, this will not suit

[sandwwraith]

What's your use case for excluding the discriminator? You won't be able to decode polymorphic data without it.

[Whathecode]

What's your use case for excluding the discriminator?

Probably the other posted issue: #1486 (comment)

In that specific use case, using JsonContentPolymorphicSerializer could work, but as I comment there, would still not be recommendable.

[P1NG2WIN]

@sandwwraith I don't need to decode this json. It goes to the server. The server does not accept unknown fields. Right now I forked the library and added a new field to the builder, so now I have two Json instances, one for the application that writes the class discriminator and the other for the api, which skips it when serializing.

[sandwwraith]

I'll close this because #1247 already mentions this use-case — feel free to continue the discussion there