Immediate.Validation

Creating validators

In order to use Immediate.Validations, it must be added to the Immediate.Handlers behaviors pipeline by including it in the list of default Behaviors for the assembly:

        using Immediate.Validations.Shared;

[assembly: Behaviors(
	typeof(ValidationBehavior<,>)
)]

      

To indicate that a class should be validated add the [Validate] attribute and an IValidationTarget<> interface:

        [Validate]
public partial record Query : IValidationTarget<Query>;

      

When Nullable Reference Types are enabled, any non-nullable reference types are automatically checked for a null value. Other validations are available like so:

        [Validate]
public partial record Query : IValidationTarget<Query>
{
	[GreaterThan(0)]
	public required int Id { get; init; }
}

      

# Referencing Other Properties

Since attributes cannot reference anything other than constant strings, the way to reference static and instance properties, fields, and methods is to use the nameof() to identify which property, field, or method should be used. For example:

        [Validate]
public partial record Query : IValidationTarget<Query>
{
	[GeneratedRegex(@"^\d+$")]
	private static partial Regex AllDigitsRegex();

	[Match(regex: nameof(AllDigitsRegex))]
	public required string Id { get; init; }
}