Is multipart/form-data supported

[fabianpage]

An endpoint which is used to upload files needs the multipart/form-data format. Is that supported by endpoints?

[julienrf]

Yes and no: currently, it’s not implemented, but it is easy to add without doing any change to the library.

• Create a Multiparts trait with a RequestEntity[Multipart] constructor:

  import endpoints.algebra
  trait Multiparts extends algebra.Endpoints {
    type Multipart
    def multipartRequest: RequestEntity[Multipart]
  }

• Create a server interpreter:

  import endpoints.akkahttp.server
  trait MultipartsServer extends Multiparts with server.Endpoints {
    type Multipart = akka.http.scaladsl.model.Multipart // (or maybe something different)
    def multipartRequest = ... // you will have to find out what to put here!
  }

• Create other interpreters as needed
• Use it!

  trait SomeEndpoints extends algebra.Endpoints with Multiparts {
    val foo = endpoint(post(path / "upload", multipartRequest), ok(emptyResponse))
  }

• Make a PR to add it here!

I can help you if you are stuck ;) multipart/form-data is definitely something we need to support in the core!

[julienrf]

Hey @fabianpage, have you found a satisfactory solution?

[Kazark]

I need this for http4s. Will see what I can do based on your comment above.