Server Side Swift with Vapor · Beautifying Our App | raywenderlich.com

0xtim · March 4, 2019, 8:36am

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/870225-server-side-swift-with-vapor/lessons/22

anthonyby · May 27, 2019, 3:12pm

If you are like me, having an issue with ERROR ] TemplateKitError.tag:set: Unsupported key type
Just follow Tim’s advise from here:

github.com/vapor/vapor

Getting "TemplateKitError.tag:set: Unsupported key type" after upgrading to Xcode 10.2

opened 12:37AM - 28 Mar 19 UTC

closed 05:14PM - 28 Mar 19 UTC

elveatles

I am still new to Vapor, so I'm sorry if the answer is obvious. My project …was working with Xcode 10.1. After upgrading to 10.2, I can no longer get my web pages to render without errors. I had a simple website working using Vapor, Fluent with PostgreSQL, and Leaf. After upgrading from Xcode 10.1 to 10.2 then visiting http://localhost:8080/ in Chrome, I get the error: > [ ERROR ] TemplateKitError.tag:set: Unsupported key type > (<Project Path>/Resources/Views/testIndex.leaf line: 0 column: 1 range: 1..<37) > (TagContext.swift:54) I can't figure out what's wrong. ### Steps to reproduce Sorry if this is a lot of code to look at. I'm including everything just in case. Package.swift: ```swift // swift-tools-version:4.0 import PackageDescription let package = Package( name: "TILApp", dependencies: [ // 💧 A server-side Swift web framework. .package(url: "https://github.com/vapor/vapor.git", from: "3.0.0"), // 🔵 Swift ORM (queries, models, relations, etc) built on PostgreSQL. .package(url: "https://github.com/vapor/fluent-postgresql.git", from: "1.0.0"), .package(url: "https://github.com/vapor/leaf.git", from: "3.0.0") ], targets: [ .target(name: "App", dependencies: ["FluentPostgreSQL", "Vapor", "Leaf"]), .target(name: "Run", dependencies: ["App"]), .testTarget(name: "AppTests", dependencies: ["App"]) ] ) ``` configure.swift ```swift import FluentPostgreSQL import Vapor import Leaf /// Called before your application initializes. public func configure(_ config: inout Config, _ env: inout Environment, _ services: inout Services) throws { // Register providers first try services.register(FluentPostgreSQLProvider()) try services.register(LeafProvider()) // Register routes to the router let router = EngineRouter.default() try routes(router) services.register(router, as: Router.self) // Register middleware var middlewares = MiddlewareConfig() // Create _empty_ middleware config middlewares.use(FileMiddleware.self) // Serves files from `Public/` directory middlewares.use(ErrorMiddleware.self) // Catches errors and converts to HTTP response services.register(middlewares) var databases = DatabasesConfig() let databaseConfig = PostgreSQLDatabaseConfig( hostname: "localhost", port: 5432, username: "vapor", database: "vapor", password: "password") let database = PostgreSQLDatabase(config: databaseConfig) databases.add(database: database, as: .psql) services.register(databases) // Configure migrations var migrations = MigrationConfig() migrations.add(model: TestUser.self, database: .psql) services.register(migrations) var commandConfig = CommandConfig.default() commandConfig.useFluentCommands() services.register(commandConfig) config.prefer(LeafRenderer.self, for: ViewRenderer.self) } ``` routes.swift ```swift /// Register your application's routes here. public func routes(_ router: Router) throws { let websiteController = WebsiteController() try router.register(collection: websiteController) } ``` WebsiteController.swift ```swift import Vapor import Leaf struct WebsiteController: RouteCollection { func boot(router: Router) throws { router.get(use: testIndexHandler) } func testIndexHandler(_ req: Request) throws -> Future<View> { let testContext = TestContext() return try req.view().render("testIndex", testContext) } } struct TestContext: Encodable { let title = "Test" } ``` testBase.leaf ```html <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>#(title)</title> </head> <body> #get(content) </body> </html> ``` testIndex.leaf ```html #set("content") { <h1>Test</h1> } #embed("testBase") ``` I run the postgres image with docker. `docker run --name postgres -e POSTGRES_DB=vapor -e POSTGRES_USER=vapor -e POSTGRES_PASSWORD=password -p 5432:5432 -d postgres` I run my website in Xcode by choosing Run > My Mac then clicking the play button. I see the usual migration messages, then > Server starting on http://localhost:8080 I go to the URL, then I get the TemplateKitError I pasted above. ### Expected behavior The webpage should show a simple webpage that just says "Test" in an h1 tag. ### Actual behavior I see a TemplateKitError described above. No web page rendered. Just json with an error. ### Environment * Vapor Framework version: 3.2.2 * Vapor Toolbox version: 3.1.10 * OS version: macOS Mojave 10.14.3

just run swift package update from the console

shogunkaramazov · May 27, 2019, 6:24pm

@anthonyby Thank you for the heads up - much appreciated! :]