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class FormatEncoder[Encoder <: EncodeResponse[_]] { | |
def encoder[A]: Encoder[A] = implicitly[Encoder[A]] // implicit encode must be in scope =/ | |
} | |
class Formats(encoders: (String, FormatEncoder[_])*, defaultFormat: String) { | |
private val formatsHash = encoders.toMap | |
private val default = formatsHash(defaultFormat) | |
def encodeFor[A](httpReq: HttpRequest): EncodeResponse[A] = formatsHash.getOrElse(???, default).encoder[A] | |
} | |
val formats = new Formats ( | |
"application/json" -> FormatEncoder[EncodeJson], | |
"application/xml" -> FormatEncoder[EncodeXml] | |
) | |
def hello(name: String) = new Service[HttpRequest, HttpResponse] { | |
def apply(req: HttpRequest) = for { | |
title <- OptionalParam("title")(req) | |
} yield Ok(Response(...))(formats.encodeFor(req)) | |
} |
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