Updates

BudgetApp/Components/ToastValidator.razor

@@ -0,0 +1,47 @@
+@implements IDisposable
+
+<DataAnnotationsValidator />
+
+@code {
+    [CascadingParameter]
+    private EditContext? CurrentEditContext { get; set; }
+
+    [Inject]
+    private ToastService ToastService { get; set; } = default!;
+
+    private bool validationRequested;
+
+    protected override void OnInitialized()
+    {
+        if (CurrentEditContext is not null)
+        {
+            CurrentEditContext.OnValidationRequested += OnValidationRequested;
+            CurrentEditContext.OnValidationStateChanged += OnValidationStateChanged;
+        }
+    }
+
+    private void OnValidationRequested(object? sender, ValidationRequestedEventArgs e)
+    {
+        validationRequested = true;
+    }
+
+    private void OnValidationStateChanged(object? sender, ValidationStateChangedEventArgs e)
+    {
+        if (!validationRequested || CurrentEditContext is null) return;
+        validationRequested = false;
+
+        foreach (var message in CurrentEditContext.GetValidationMessages())
+        {
+            ToastService.Show(message);
+        }
+    }
+
+    public void Dispose()
+    {
+        if (CurrentEditContext is not null)
+        {
+            CurrentEditContext.OnValidationRequested -= OnValidationRequested;
+            CurrentEditContext.OnValidationStateChanged -= OnValidationStateChanged;
+        }
+    }
+}