Suitable for Blazor webassembly? about fluentvalidation.blazor HOT 2 OPEN

I'm using it in Blazor WASM without any issues. Can you provide more details about the problem you're having?

from fluentvalidation.blazor.

I've been trying to get it to work in Blazor WASM as well, but I'm getting an exception saying a method is not found. I've build a model, an abstract validator for the model, and I'm using the model in a component used on the page which passes the model as a parameter to the component. Here are some examples of my code:

Model:
`public class Period:BaseModel, ICreatedModified
{
public Period() : base()
{
Created=DateTimeOffset.Now;
Modified=DateTimeOffset.Now;
Folders = new List<Folder>();
}

    public DateTime? PeriodStart { get; set; }
    public DateTime? PeriodEnd { get; set; }
    public string Name { get; set; }
    public List<Folder> Folders { get; set; }
    public DateTimeOffset? Created { get; set; }
    public DateTimeOffset? Modified { get; set; }
}`

Validator:
public class PeriodValidator:AbstractValidator<Period> { public PeriodValidator() { RuleFor(p => p.Name).NotEmpty().MaximumLength(50).MinimumLength(5); RuleFor(p => p.PeriodStart).NotEmpty().LessThanOrEqualTo(p => p.PeriodEnd); RuleFor(p => p.PeriodEnd).NotEmpty(); RuleFor(p => p.ItemId).NotEmpty(); } }

Host Page (abbreviated):
`@page "/budget/{id}"
@Inject HttpClient http
@Inject NavigationManager nav

@if (IsLoaded)
{
<PeriodEditorDialog Period="@SelectedPeriod"
ShowDialog="@_showPeriodDialog"
CloseAndAbandonChanges="OnCancelPeriod"
SaveChanges="OnSavePeriod"></PeriodEditorDialog>
}
else
{
<LoadingPanel ShowLoading="@_isLoading"></LoadingPanel>
}

@code {
Budget _budget;
bool _isLoading = true;
protected bool IsLoaded => _budget != null;
bool _showPeriodDialog = false;
Guid _selectedPeriodId = Guid.Empty;

protected override async Task OnInitializedAsync()
{
    await LoadBudget();
}

private async Task LoadBudget()
{
    var result = await http.GetFromJsonAsync<Budget>($"api/budget/{Id}");
    _budget = result;
}

Period SelectedPeriod => _selectedPeriodId != Guid.Empty
    ? _budget.Periods.FirstOrDefault(p => p.ItemId.Equals(_selectedPeriodId))
    : new Period();

protected void OnAddPeriod()
{
    _showPeriodDialog = true;
}

protected void OnEditPeriod(Guid id)
{
    _selectedPeriodId = id;
    _showPeriodDialog = true;
}

protected async Task OnSavePeriod(Period updatedPeriod)
{
/* code omitted */
}

protected void OnCancelPeriod()
{
    _selectedPeriodId = Guid.Empty;
    _showPeriodDialog = false;
}

[Parameter]
public string Id { get; set; }`

Editor Dialog Component:
`@if (ShowDialog)
{
<div class="period-editor-dialog">
<EditForm Model="@period">
<FluentValidator/>
<div class="dialog">
<div class="dialog-title">Period Information</div>
<div class="dialog-body">
<div class="mb-3">
<label for="periodName" class="form-label">Period Name</label>
<InputText id="periodName" DisplayName="Period Name"
@bind-Value="Period.Name"
class="form-control"></InputText>
<ValidationMessage For="() => Period.Name"></ValidationMessage>
</div>
<div class="mb-3">
<label for="periodStart" class="form-label">Period Start</label>
<InputDate id="periodStart" DisplayName="Period Start"
@bind-Value="Period.PeriodStart"
class="form-control"></InputDate>
<ValidationMessage For="() => Period.PeriodStart"></ValidationMessage>
</div>
<div class="mb-3">
<label for="periodEnd" class="form-label">Period End</label>
<InputDate id="periodEnd" DisplayName="Period End"
@bind-Value="Period.PeriodEnd"
class="form-control"></InputDate>
<ValidationMessage For="() => Period.PeriodEnd"></ValidationMessage>
</div>
</div>
<div class="dialog-actions">
<button type="button" class="btn btn-secondary" @OnClick="@OnClickCancel">Cancel</button>
<button type="submit" class="btn btn-primary">Save</button>
</div>
</div>
</EditForm>
</div>
}

@code {
[Parameter]
public bool ShowDialog { get; set; }

[Parameter]
public Period Period { get; set; }

[Parameter]
public EventCallback CloseAndAbandonChanges { get; set; }

[Parameter]
public EventCallback<Period> SaveChanges { get; set; }

protected async Task OnClickCancel()
{
    Period = new Period();
    await CloseAndAbandonChanges.InvokeAsync();
}

public async Task SubmitFormAsync()
{
    await SaveChanges.InvokeAsync(Period);
}

}
`

Finally, in my startup I have used the FluentValidation.DependencyInjection to add the validators.
`public class Program
{
public static async Task Main(string[] args)
{
var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");

        builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

        builder.Services.AddValidatorsFromAssemblyContaining<Period>();

        await builder.Build().RunAsync();
    }
}`

The error:
crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Method not found: System.Collections.Generic.IList1<FluentValidation.Results.ValidationFailure> FluentValidation.Results.ValidationResult.get_Errors() System.MissingMethodException: Method not found: System.Collections.Generic.IList1<FluentValidation.Results.ValidationFailure> FluentValidation.Results.ValidationResult.get_Errors()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[<ValidateModel>d__25](<ValidateModel>d__25& stateMachine)
at Microsoft.AspNetCore.Components.Forms.FluentValidator.ValidateModel(EditContext editContext, ValidationMessageStore messages)
at Microsoft.AspNetCore.Components.Forms.FluentValidator.<>c__DisplayClass24_0.<AddValidation>b__0(Object sender, ValidationRequestedEventArgs eventArgs)
at Microsoft.AspNetCore.Components.Forms.EditContext.Validate()
at Microsoft.AspNetCore.Components.Forms.EditForm.HandleSubmitAsync()
at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle)

from fluentvalidation.blazor.