Created
August 16, 2023 21:05
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SwiftUI EnvironmentObservable
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| import SwiftUI | |
| import Observation | |
| @propertyWrapper | |
| struct EnvironmentObservable<Value: AnyObject & Observable>: DynamicProperty { | |
| @Environment var wrappedValue: Value | |
| public init(_ objectType: Value.Type) { | |
| _wrappedValue = .init(objectType) | |
| } | |
| public init() { | |
| _wrappedValue = .init(Value.self) | |
| } | |
| private var store: Bindable<Value>! | |
| var projectedValue: Bindable<Value> { | |
| store | |
| } | |
| mutating func update() { | |
| store = Bindable(wrappedValue) | |
| } | |
| } | |
| @Observable | |
| class Model { | |
| var someField = "Hello" | |
| } | |
| struct ContentView: View { | |
| @EnvironmentObservable var model: Model | |
| var body: some View { | |
| VStack { | |
| Text(model.someField.uppercased()) | |
| TextField("", text: $model.someField) | |
| } | |
| .padding() | |
| } | |
| } |
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