private ModelValidator GetValidator(ModelMetadata metadata, ControllerContext context, ValidatorData item)
{
DataAnnotationsModelValidationFactory factory;
if (item.GetType().Name == "NotNullValidatorData")
{
ValidationAttribute attribute = new RequiredAttribute { ErrorMessage = item.MessageTemplate };
if (AttributeFactories.TryGetValue(attribute.GetType(), out factory))
return factory(metadata, context, attribute);
}
else if (item.GetType().Name == "RegexValidatorData")
{
RegexValidatorData regexData = (RegexValidatorData)item;
RegularExpressionAttribute regexAttribute = new RegularExpressionAttribute(regexData.Pattern) { ErrorMessage = item.GetMessageTemplate() };
if (AttributeFactories.TryGetValue(regexAttribute.GetType(), out factory))
return factory(metadata, context, regexAttribute);
}
return null;
}
protected override IEnumerable<ModelValidator> GetValidators(ModelMetadata metadata, ControllerContext context, IEnumerable<Attribute> attributes)
{
List<ModelValidator> vals = base.GetValidators(metadata, context, attributes).ToList();
DataAnnotationsModelValidationFactory factory;
// Inject our new validator.
if (metadata.ContainerType != null)
{
// Check if we have validation for this class name.
if (ValidationManager.Validators.ContainsKey(metadata.ContainerType.Name))
{
var validator = ValidationManager.Validators[metadata.ContainerType.Name];
// Check if we have validation for this property name.
if (validator.ContainsKey(metadata.PropertyName))
{
var property = validator[metadata.PropertyName];
// Only add validation to visible properties.
if (property.Visible)
{
// Required attribute.
if (property.Required)
{
ValidationAttribute required;
if (metadata.ModelType == typeof(bool))
{
// For required booleans, enforce true.
required = new EnforceTrueAttribute { ErrorMessage = property.ErrorMessage };
}
else if (metadata.ModelType == typeof(int) || metadata.ModelType == typeof(long) || metadata.ModelType == typeof(double) || metadata.ModelType == typeof(float))
{
// For required int, long, double, float (dropdownlists), enforce > 0.
required = new GreaterThanZeroAttribute() { ErrorMessage = property.ErrorMessage };
}
else
{
required = new RequiredAttribute { ErrorMessage = property.ErrorMessage };
}
if (!AttributeFactories.TryGetValue(required.GetType(), out factory))
{
factory = DefaultAttributeFactory;
}
yield return factory(metadata, context, required);
}
// Regular expression attribute.
if (!string.IsNullOrEmpty(property.RegularExpression))
{
RegularExpressionAttribute regEx = new RegularExpressionAttribute(property.RegularExpression) { ErrorMessage = property.ErrorMessage };
if (!AttributeFactories.TryGetValue(regEx.GetType(), out factory))
{
factory = DefaultAttributeFactory;
}
yield return factory(metadata, context, regEx);
}
// Compare attribute.
if (!string.IsNullOrEmpty(property.Compare))
{
CompareAttribute compare = new CompareAttribute(property.Compare) { ErrorMessage = property.ErrorMessage };
if (!AttributeFactories.TryGetValue(compare.GetType(), out factory))
{
factory = DefaultAttributeFactory;
}
yield return factory(metadata, context, compare);
}
}
}
}
}
}