decoders not shared to the mounted routes

[kliushnichenko]

Unlike jooby2 in 3.x decoders installed in the main app is not applied to the routes were mounted from another app

class AppA extends Jooby {
    {
        post("/pets", ctx -> ctx.body(Pet.class));
    }
}

class MainApp extends Jooby {
    {
       install(new JacksonModule());
       mount(new AppA());
    }
  }

Now hit post("/pets") and you will catch UnsupportedMediaType error, cause Jackson decoder was overridden at the copy route stage.
Hope it wasn't changed intentionally and we can return the Jooby2 behaviour

[jknack]

there is a slightly difference between mount(Router) and install(Router). In your case install should work. Mount only import routes into the main app.

[kliushnichenko]

yeah, indeed install works as expected, thank you