Server Side Swift with Vapor - Part 4: Accepting Data | Ray Wenderlich

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In this video, you'll learn how to accept data in your Vapor applications and parse it with Codable.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/4493-server-side-swift-with-vapor/lessons/4
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struct InfoData: Content {
    let name: String
}

Non-class type 'InfoData' cannot inherit from class 'Content'

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@0xtim Can you please help with this when you get a chance? Thank you - much appreciated! :]

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@valveriy_kliuk have you got a class called Content declared anywhere? If you click through to the definition in Xcode where does it think it’s declared? Also check that you have import Vapor in the file

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hello , can you help me? please

when definition struct
i have this error

struct InfoResponse : Content {
let name : String
}
First Error : Non-class type ‘InfoResponse’ cannot inherit from class ‘Content’

and when definition return value " req → InfoResponse "
i have this error
Second Error : Unable to infer closure type in the current context

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in the documentation vapor

i can’t find your ways to defines router (such as work with Content , or etc ) in this lesson

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@lashkari it looks like you are on Vapor 2. Please ensure you use the --branch=beta flag when you create the project

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The documentation for Vapor 3 is https://docs.vapor.codes/3.0/

Note that it is quite out of date at the moment as the beta has evolved

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@valveriy_kliuk make sure you passed in the --branch=beta when you created the project

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when use --branch=beta i have errors in Xcode

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@lashkari what are the errors you are getting? Have you got Swift 4.1?

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oh sorry i don’t use this

ok, thanks download and install this now

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No worries :slightly_smiling_face:

Instructions for installing the Swift 4.1 toolchain are in Video 2

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Sorry
thanks a lot :pray:

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Np problem here. I have import Vapor

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I did’t passe it. Thanks!

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The app is crashing when making the post request. “wait() must not be called when on the EventLoop” is the error. Any help?

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I think this is an NIO issue. I guess it was just implemented into Vapor today or yesterday, and it includes a precondition against this. Not sure if it has to do with the deprecation of await too? I got errors when trying to use wait () instead of await(). Using up-to-date/beta versions of everything: Swift 4.1, Xcode 9.3 beta4 , and Vapor 3.1.4.l --see 1 minute video for the errors: https://drive.google.com/open?id=1C-muv2iSg8njvdOISXxFnZbpeRXm2zQv

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I got it to work by commenting out this precondition in the EventLoopFuture.swift file (temporarily for the exercise only of course):

// if !(self.eventLoop is EmbeddedEventLoop) {
// precondition(!eventLoop.inEventLoop, “wait() must not be called when on the EventLoop”)
// }

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@amyerson @trouge the new way of doing it is:

router.post(InfoData.self, at: "info") { req, data -> InfoResponse in
  return InfoResponse(request: data)
}

Apologies, originally the wait() call should have worked!

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