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[英]Getting the following error in ASP.NET MVC 5: Validation type names in unobtrusive client validation rules must be unique. The […] required
[英]Validation type names in unobtrusive client validation rules must be unique. The following validation type was seen more than once: required
我创建了以下自定义ASP.Net MVC模型验证:
internal class LocalizedRequiredAttribute : RequiredAttribute, IClientValidatable
{
public List<string> DependentProperties { get; private set; }
public List<string> DependentValues { get; private set; }
public string Props { get; private set; }
public string Vals { get; private set; }
public string RequiredFieldValue { get; private set; }
public LocalizedRequiredAttribute(string resourceId = "")
{
if (string.IsNullOrEmpty(resourceId))
ErrorMessage = ResourcesHelper.GetMessageFromResource("RequiredValidationErrorMessage");
else
ErrorMessage = ResourcesHelper.GetMessageFromResource(resourceId);
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
string msg = FormatErrorMessage(metadata.GetDisplayName());
yield return new ModelClientValidationRequiredRule(msg); //Exception
}
}
internal class LocalizedNumericRegularExpressionAttribute : RegularExpressionAttribute, IClientValidatable
{
public LocalizedNumericRegularExpressionAttribute(string resourceId = "") : base(@"^\d+$")
{
if (string.IsNullOrEmpty(resourceId))
ErrorMessage = ResourcesHelper.GetMessageFromResource("NumberRequiredValidationErrorMessage");
else
ErrorMessage = ResourcesHelper.GetMessageFromResource(resourceId);
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
string msg = FormatErrorMessage(metadata.GetDisplayName());
yield return new ModelClientValidationRequiredRule(msg); //Exception
}
}
以下是我的模型:
public class MyModel
{
[LocalizedRequired]
[LocalizedNumericRegularExpression]
public int Emp_No { get; set; }
}
每当我导航到具有上述模型的表单时,就会发生以下异常。
Validation type names in unobtrusive client validation rules must be unique. The following validation type was seen more than once: required
如果我删除IClientValidatable
,则以上代码可以,但是客户端验证无效。
我的代码有什么问题?
我找到了解决方法,我们必须在global.asax的Application_Start处添加以下代码
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(LocalizedRequiredAttribute), typeof(RequiredAttributeAdapter));
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(LocalizedNumericRegularExpressionAttribute), typeof(RegularExpressionAttributeAdapter));
您将ValidationType的值与MVC自动验证相同。 因此,您必须在ModelClientValidationRule或其派生类中更改ValidationType =“名称唯一”的值。 名称应避免MVC自动生成名称,例如'date','required'...其他解决方案是通过将这些代码放到应用启动时关闭自动验证
DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false;
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