Server Side Swift with Vapor - Part 2: Hello World | Ray Wenderlich

0xtim · February 18, 2018, 8:12pm

@rubiriffic @ckbrown - I’ve just tried to see what’s working at the moment. Looks like that kind of parameter routing isn’t in yet, you’ll need to stick to using String.parameter and pulling out all of them and only using the ones you want for now. I’ve asked in Slack to see what the status/plan is for this kind of thing. (Though I would still argue if you are throwing away a dynamic parameter you have a design issue)

ckbrown · March 2, 2018, 1:19pm

actually no I didn’t run that, I missed the part where you said this would get the beta branch of Vapor and I thought you were creating a local branch called ‘beta’ so I skipped it because I didn’t really care about git at the moment. Guess I should have paid closer attention! lol

0xtim · March 2, 2018, 2:34pm

Ha! No the --branch=beta specifies which branch of the template to use

averma12 · March 3, 2018, 5:14pm

I’m getting no such module name Vapor in my application

0xtim · March 3, 2018, 5:54pm

@averma12 have you done a build first? Xcode can get confused with some modules the first time

averma12 · March 3, 2018, 8:33pm

My build is failing but I’m not getting why.
/Users/abhinavverma/Desktop/vapor/Hello_vapor/.build/checkouts/crypto.git-7980259129511365902/Sources/Crypto/Cipher/Cipher+Method.swift:1:8: error: could not build Objective-C module ‘CTLS’
import CTLS
I got an error of brew link cels. that command had failed when I was setting up my vapour toolbox.

0xtim · March 3, 2018, 8:47pm

@averma12 are you definitely on Vapor 3? What does your Package.swift file look like? It should have .package(url: "https://github.com/vapor/vapor.git", from: "3.0.0-rc"), in it. If it says .upToNextMajor("2.1.0") then you are on Vapor 2. I’m pretty sure CTLS isn’t required for Vapor 3.

lashkari · March 3, 2018, 9:38pm

Your code :
let name = try req.parameter(String.self)

your code don’t work for me
Because function parameter is changed

Correct code
let name = try req.parameters.next(String.self)

0xtim · March 3, 2018, 9:40pm

@lashkari are you definitely on Vapor 3? Did you pass in the --branch=beta flag when you created the project? let name = try req.parameters.next(String.self) is for Vapor 2

lashkari · March 3, 2018, 9:41pm

vapor version
Vapor Toolbox: 3.1.4

0xtim · March 3, 2018, 9:42pm

@lashkari what does your Package.swift look like?

The toolbox is different to the framework

lashkari · March 3, 2018, 9:44pm

how to change and update this ?

0xtim · March 3, 2018, 9:46pm

The easiest way will be to start from scratch. In terminal run:

cd ~/vapor
rm -rf HelloVapor
vapor new HelloVapor --branch=beta

lashkari · March 3, 2018, 10:02pm

i’m using Swift 4.1 snapshot , and in terminal using this code
vapor new HelloVapor --branch=beta

but in Xcode i have one error
No such module ‘App’
can you help me?

0xtim · March 3, 2018, 10:03pm

@lashkari make sure you do a build first - sometimes Xcode can get confused with SPM when it hasn’t built anything yet

lashkari · March 3, 2018, 10:09pm

The problem was solved
thanks a lot

averma12 · March 4, 2018, 6:48am

// swift-tools-version:4.0

import PackageDescription

let package = Package(
name: “Hello_vapor”,
products: [
.library(name: “App”, targets: [“App”]),
.executable(name: “Run”, targets: [“Run”])
],
dependencies: [
.package(url: “GitHub - vapor/vapor: 💧 A server-side Swift HTTP web framework.”, .upToNextMajor(from: “2.1.0”)),
.package(url: “GitHub - vapor-community/fluent-provider: A provider for including Fluent in Vapor applications”, .upToNextMajor(from: “1.2.0”)),
],
targets: [
.target(
name: “App”,
dependencies: [“Vapor”, “FluentProvider”],
exclude: [“Config”, “Public”, “Resources”]
),
.target(name: “Run”, dependencies: [“App”]),
.testTarget(name: “AppTests”, dependencies: [“App”, “Testing”])
]
)

0xtim · March 4, 2018, 11:04am

@averma12 yeah that’s Vapor 2. See this post, which should help:

doyle · March 4, 2018, 1:55pm

Terminal:
eval “$(curl -sL check.vapor.sh)”:
Xcode 9 is compatible with Vapor 2.
Xcode 9 is compatible with Vapor 3.
Swift 4.0 is compatible with Vapor 2.
Swift 4.1 or later is required for Vapor 3.

Tried this solution:

Looks like I need to update to 4.1 in vapor?

Clicked build before making any changes, build successful, but as soon as I click on main.swift I get an error next to “import App”:
“Module compiled with Swift 4.1 cannot be imported in Swift 4.0.3: /Users/xxx/Library/Developer/Xcode/DerivedData/HelloVapor-gsmlftoylwgkmsgzoxnghlvcnzug/Build/Products/Debug/App.framework/Modules/App.swiftmodule/x86_64.swiftmodule”

0xtim · March 4, 2018, 2:21pm

@doyle yes you’ll need Swift 4.1 for Vapor 3. However… if you have installed Swift 4.1 as a toolchain in Xcode, your command line version will be Swift 4.0.

If it builds ok but you get errors popping up - I would ignore it, it is probably Xcode caching errors

They should go away, but if you clean the project (and delete Derived Data) you should be fine