54 lines
2.2 KiB
C#
54 lines
2.2 KiB
C#
namespace System.Web.ModelBinding {
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using System.Globalization;
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using System.Linq;
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public class ValidatableObjectAdapter : ModelValidator {
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public ValidatableObjectAdapter(ModelMetadata metadata, ModelBindingExecutionContext context)
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: base(metadata, context) {
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}
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public override IEnumerable<ModelValidationResult> Validate(object container) {
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// NOTE: Container is never used here, because IValidatableObject doesn't give you
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// any way to get access to your container.
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object model = Metadata.Model;
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if (model == null) {
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return Enumerable.Empty<ModelValidationResult>();
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}
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IValidatableObject validatable = model as IValidatableObject;
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if (validatable == null) {
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throw new InvalidOperationException(
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String.Format(
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CultureInfo.CurrentCulture,
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SR.GetString(SR.ValidatableObjectAdapter_IncompatibleType),
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typeof(IValidatableObject).FullName,
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model.GetType().FullName
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)
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);
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}
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ValidationContext validationContext = new ValidationContext(validatable, null, null);
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return ConvertResults(validatable.Validate(validationContext));
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}
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private IEnumerable<ModelValidationResult> ConvertResults(IEnumerable<ValidationResult> results) {
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foreach (ValidationResult result in results) {
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if (result != ValidationResult.Success) {
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if (result.MemberNames == null || !result.MemberNames.Any()) {
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yield return new ModelValidationResult { Message = result.ErrorMessage };
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}
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else {
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foreach (string memberName in result.MemberNames) {
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yield return new ModelValidationResult { Message = result.ErrorMessage, MemberName = memberName };
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}
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}
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}
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}
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}
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}
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}
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