@sbu-WBT thanks for the PR. Can you please PM me via Slack to discuss on oneOf support in Dart?

https://join.slack.com/t/openapi-generator/shared_invite/enQtNzAyNDMyOTU0OTE1LTY5ZDBiNDI5NzI5ZjQ1Y2E5OWVjMjZkYzY1ZGM2MWQ4YWFjMzcyNDY5MGI4NjQxNDBiMTlmZTc5NjY2ZTQ5MGM

@wing328 @sbu-WBT any progress on this?

@agilob https://github.com/OpenAPITools/openapi-generator/tree/dart-oneof

maybe this can be done using sum types from this package but in that case using the dart code would require another codegen step via the dart build system.
Also, there are proposals to add this sort of functionality to the dart languge natively: dart-lang/language#83 dart-lang/language#349 though there's no telling if and when those make it to the language I guess, but maybe the dart team will work on that next after the work on nun-nullable types has completed

I vote for landing this. dynamic is the correct type in Dart when the type system is too limited.

Waiting for sum types or unions to land will take years.

The problem is that oneOf is used now for nullable objects.
try this in https://editor.swagger.io/

openapi: 3.0.0
components:
  schemas:
    Example:
      title: Example
      properties:
        objectField:
          nullable: true
          oneOf:
            - $ref: '#/components/schemas/ObjectField'
      type: object
    ObjectField: 

in spec 3.1 there would be 'null' keyword for such cases, but even then this case is not of the list. So we at least should handle these cases with care. This is not dynamic, it is nullable ObjectField? objectField

Oh, I've should read the commit before. You already handle this case.

Any update on this? oneOf is causing troubles for our project

@jgoyvaerts would you be interested in testing and updating this PR against your project?

I tested this branch locally, while it does get rid of the generated properties OneOfType which cause compile errors and replaces these with dynamic? , it still isn't completely correct in handling the case described by @yfer , where those dynamic? should actually be generated as nullable types, so Type?.

I'll see if I can write a fix for this case

Well, NNBD is not implemented at all in the Dart generator I believe.