/// <summary>
/// Creates an instance of the RequestValidator using the .net Validation framework as part of the DataAnnotations.
/// The collection naming strategy can be overridden by creating a resolvable instance of <code>ICollectionPropertyNamingStrategy</code>
/// in the serviceProvider
/// </summary>
/// <param name="serviceProvider"></param>
public DataAnnotationsRequestValidator(IServiceProvider serviceProvider)
{
_serviceProvider = serviceProvider;
var altStrategy = serviceProvider.GetService(typeof(ICollectionPropertyNamingStrategy));
if (altStrategy != null)
{
_collectionPropertyNamingStrategy = (ICollectionPropertyNamingStrategy)altStrategy;
}
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
if (!(value is ICollection coll))
{
return(ValidationResult.Success);
}
ICollectionPropertyNamingStrategy cpns = validationContext.GetService(typeof(ICollectionPropertyNamingStrategy)) as ICollectionPropertyNamingStrategy;
string message = "";
int idx = 0;
var members = new List <string>();
foreach (var c in coll)
{
RegularExpressionAttribute attr = new RegularExpressionAttribute(_pattern);
var res = attr.GetValidationResult(c, validationContext);
var invalid = !string.IsNullOrWhiteSpace(res?.ErrorMessage);
if (invalid)
{
message = res.ErrorMessage;
if (cpns != null)
{
members.Add(cpns.CreateName(validationContext.MemberName, idx, ""));
}
else
{
members.Add($"{validationContext.MemberName}[{idx}]");
}
}
idx++;
}
if (members.Any())
{
return(new ValidationResult(message, members));
}
return(ValidationResult.Success);
}
public DataAnnotationsValidator(ICollectionPropertyNamingStrategy collectionValidationNaming)
{
_collectionValidationNaming = collectionValidationNaming ?? throw new ArgumentNullException(nameof(collectionValidationNaming));
}
