ValidatedInjectAdditions adds some convenience methods for projects that are using EasyInject and ValidatedExtension.
EasyInject is a Swift only project and supports Swift Package Manager, Carthage and CocoaPods.
import PackageDescription
let package = Package(
name: "YourPackage",
dependencies: [
.Package(url: "https://github.com/vknabel/EasyInject.git", majorVersion: 0, minor: 6),
.Package(url: "https://github.com/vknabel/ValidatedExtension.git", majorVersion: 3, minor: 0),
.Package(url: "https://github.com/vknabel/ValidatedInjectAdditions.git", majorVersion: 0, minor: 2)
]
)
github "vknabel/EasyInject"
github "vknabel/ValidatedExtension"
github "vknabel/ValidatedInjectAdditions" ~> 0.2
source 'https://github.com/CocoaPods/Specs.git'
use_frameworks!
pod 'EasyInject'
pod 'ValidatedExtension'
pod 'ValidatedInjectAdditions', '~> 0.2'
This code snippet is built on top of (EasyInject)[https://www.github.com/vknabel/EasyInject/README.md]'s example.
import EasyInject
import ValidatedExtension
import ValidatedInjectAdditions
// Define your a Validator as known from ValidatedExtension
struct NetworkServiceInjectorValidator: Validator {
typealias WrappedType = AnyInjector<String>
static func validate(_ value: AnyInjector<String>) throws -> Bool {
let base = try value.resolving(from: .baseUrl)
return URL(string: base)
.flatMap({ _ in true })
?? false
}
}
// Add properties to Validated<NetworkServiceInjectorValidator>
extension ValidatedType where ValidatorType == NetworkServiceInjectorValidator {
var baseUrl: String {
return try! value.resolving(from: .baseUrl)
}
}
final class NetworkService: Providable, ValidatedDependency {
// Declare your dependency
typealias DependencyValidator = NetworkServiceInjectorValidator
let baseUrl: String
init<VT : ValidatedType where VT.ValidatorType == DependencyValidator>(validated dependencies: VT) {
// Just focus on setting thing up
baseUrl = dependencies.baseUrl
}
}
var injector = LazyInjector<String>().globalize().erase()
injector.provide(for: .baseUrl, usingFactory: { _ in "https://my.base.url/" })
// this will throw an error if .baseUrl is missing
// Otherwise initializes NetworkService
let networkService = try NetworkService(injector: &injector)
Valentin Knabel, develop@vknabel.com
ValidatedInjectAdditions is available under the MIT license. See the LICENSE file for more info.