/// <summary>
/// Gets the collection of registered <see cref="ModelValidator"/> instances.
/// </summary>
/// <param name="actionContext">The context.</param>
/// <param name="metadata">The metadata.</param>
/// <returns>A collection of registered <see cref="ModelValidator"/> instances.</returns>
public static IEnumerable <ModelValidator> GetValidators(this HttpActionContext actionContext, ModelMetadata metadata)
{
if (actionContext == null)
{
throw Error.ArgumentNull("actionContext");
}
IModelValidatorCache validatorCache = actionContext.GetValidatorCache();
return(actionContext.GetValidators(metadata, validatorCache));
}
internal static IEnumerable <ModelValidator> GetValidators(
this HttpActionContext actionContext,
ModelMetadata metadata,
IModelValidatorCache validatorCache
)
{
if (validatorCache == null)
{
// slow path: there is no validator cache on the configuration
return(metadata.GetValidators(actionContext.GetValidatorProviders()));
}
else
{
return(validatorCache.GetValidators(metadata));
}
}
// Validates a single node (not including children)
// Returns true if validation passes successfully
private static bool ShallowValidate(ModelMetadata metadata, ValidationContext validationContext, object container)
{
Contract.Requires(validationContext != null);
bool isValid = true;
string key = null;
IModelValidatorCache validatorCache = validationContext.ValidatorCache;
ModelValidator[] validators;
if (validatorCache == null)
{
// slow path: there is no validator cache on the configuration
validators = metadata.GetValidators(validationContext.ValidatorProviders).AsArray();
}
else
{
validators = validatorCache.GetValidators(metadata).AsArray();
}
for (int index = 0; index < validators.Length; index++)
{
ModelValidator validator = validators[index];
foreach (ModelValidationResult error in validator.Validate(metadata, container))
{
if (key == null)
{
key = validationContext.RootPrefix;
foreach (IKeyBuilder keyBuilder in validationContext.KeyBuilders.Reverse())
{
key = keyBuilder.AppendTo(key);
}
}
validationContext.ModelState.AddModelError(key, error.Message);
isValid = false;
}
}
return(isValid);
}