This section may contain outdated information.

Module: import HTTP


Traditionally HTTP servers take a Request and return a Response. Vapor is no different, but we can take advantage of Swift's powerful protocols to be a bit more flexible to the user facing API.

Let's start with the definition of ResponseRepresentable

public protocol ResponseRepresentable {
    func makeResponse() throws -> Response

By conforming to this protocol, we can more flexibly return things that conform instead of creating the response manually each time. Vapor provides some of these by default. Including (but not limited to):


Because string conforms to ResponseRepresentable, we can return it directly in a Vapor route handler.

drop.get("hello") { request in
  return "Hello, World!"


JSON can be returned directly instead of recreating a response each time.

drop.get("hello") { request in
  return try JSON(node: [
      "hello": "world",
      "some-numbers": [


Of course, we can also return Responses for anything not covered:

drop.get("hello") { request in
  return Response(status: .ok, headers: ["Content-Type": "text/plain"], body: "Hello, World!")


All we need to do to return our own objects is conform them to ResponseRepresentable. Let's look at an example type, a simple blog post model:

import Foundation

struct BlogPost {
  let id: String
  let content: String
  let createdAt: NSDate

And now, let's conform it to response representable.

import HTTP
import Foundation

extension BlogPost: ResponseRepresentable {
  func makeResponse() throws -> Response {
    let json = try JSON(node:
        "id": id,
        "content": content,
        "created-at": createdAt.timeIntervalSince1970
    return try json.makeResponse()

Don't forget to import HTTP.

Now that we've modeled our BlogPost, we can return it directly in route handlers.

drop.post("post") { req in
  guard let content = request.data["content"] else { throw Error.missingContent }
  let post = Post(content: content)
  try post.save(to: database)
  return post