private static IDictionary <string, object> GetUnobtrusiveValidationAttributes(PropertyInfo propertyInfo, ModelMetadata modelMetadata, IModelMetadataProvider provider)
{
var hasRequiredAttribute = false;
var propType = GetPropertyType(propertyInfo);
var attrs = new AttributeDictionary();
var valAttrs = propertyInfo.GetCustomAttributes(typeof(ValidationAttribute));
ValidationAttributeAdapterProvider adapterProvider = new ValidationAttributeAdapterProvider();
IAttributeAdapter adapter;
var context = new ClientModelValidationContext(
new ActionContext(),
modelMetadata,
provider,
attrs);
foreach (ValidationAttribute valAttr in valAttrs)
{
if (valAttr is RequiredAttribute)
{
hasRequiredAttribute = true;
}
adapter = adapterProvider.GetAttributeAdapter(valAttr, null);
adapter.AddValidation(context);
}
if (!hasRequiredAttribute && context.ModelMetadata.IsRequired)
{
adapter = adapterProvider.GetAttributeAdapter(new RequiredAttribute(), null);
adapter.AddValidation(context);
}
if (propType == typeof(float) ||
propType == typeof(double) ||
propType == typeof(decimal))
{
MergeAttribute(context.Attributes, "data-val", "true");
MergeAttribute(context.Attributes, "data-val-number", GetErrorMessage(context.ModelMetadata));
}
return(attrs.ToDictionary(p => p.Key, pp => (object)pp.Value));
}