Support for discriminated form?

[yatesco]

I'm expecting the answer is no, and I understand why, but on the off chance ;-)....

I have a front end which posts to an /action endpoint, but the body of that action can have multiple structures. Is it possible to intelligently deserialise a form to an enum? Are there any examples?

I'm talking about something like:

enum MyForm {
  Rename(String),
  Delete.
  SomethingElse(String, usize)
}

with POSTS like action=rename&rename[0]="something", or action=delete etc.

I think I'm going to end up JSONing it on the front end but I'm using the excellent https://htmx.org so would prefer to avoid that if possible.

[davidpdrsn]

Almost. This should work

#[derive(Deserialize, Debug)]
#[serde(tag = "action", rename_all = "kebab-case")]
enum Input {
    Rename { rename: String },
    Delete,
    SomethingElse { foo: String, bar: usize },
}

Although you'll have to POST the data as action=rename&rename=foobar.

There might be some serde attributes that you can use to get exactly what you wrote but I'm not sure.

[yatesco]

thank you!