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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.ComponentModel.DataAnnotations;
using Microsoft.AspNetCore.Mvc.ModelBinding.Validation;
using Microsoft.Extensions.Localization;
namespace Microsoft.AspNetCore.Mvc.DataAnnotations;
/// <summary>
/// <see cref="AttributeAdapterBase{TAttribute}"/> for <see cref="RequiredAttribute"/>.
/// </summary>
public sealed class RequiredAttributeAdapter : AttributeAdapterBase<RequiredAttribute>
{
/// <summary>
/// Initializes a new instance of <see cref="RequiredAttributeAdapter"/>.
/// </summary>
/// <param name="attribute">The <see cref="RequiredAttribute"/>.</param>
/// <param name="stringLocalizer">The <see cref="IStringLocalizer"/>.</param>
public RequiredAttributeAdapter(RequiredAttribute attribute, IStringLocalizer? stringLocalizer)
: base(attribute, stringLocalizer)
{
}
/// <inheritdoc />
public override void AddValidation(ClientModelValidationContext context)
{
ArgumentNullException.ThrowIfNull(context);
MergeAttribute(context.Attributes, "data-val", "true");
MergeAttribute(context.Attributes, "data-val-required", GetErrorMessage(context));
}
/// <inheritdoc />
public override string GetErrorMessage(ModelValidationContextBase validationContext)
{
ArgumentNullException.ThrowIfNull(validationContext);
return GetErrorMessage(validationContext.ModelMetadata, validationContext.ModelMetadata.GetDisplayName());
}
}
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