Class ValidationErrorsContext

Namespace

Trellis.Asp

Assembly

Trellis.Asp.dll

Provides a context for collecting validation errors during JSON deserialization. Uses AsyncLocal to maintain thread-safe, request-scoped error collection.

public static class ValidationErrorsContext

Inheritance

object

ValidationErrorsContext

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Examples

using (ValidationErrorsContext.BeginScope())
{
    // Deserialize JSON - errors are collected
    var dto = JsonSerializer.Deserialize<CreateUserDto>(json, options);

    // Check for collected errors
    var error = ValidationErrorsContext.GetValidationError();
    if (error is not null)
    {
        return Results.ValidationProblem(error);
    }
}

Remarks

This class enables the pattern of collecting all validation errors from value objects during JSON deserialization, rather than failing on the first error. This allows returning a comprehensive list of validation failures to the client.

The context is automatically scoped per async operation, making it safe for use in concurrent web request scenarios.

Properties

HasErrors

Gets whether any validation errors have been collected in the current scope.

public static bool HasErrors { get; }

Property Value

bool

Methods

BeginScope()

Begins a new validation error collection scope.

public static IDisposable BeginScope()

Returns

IDisposable

An IDisposable that ends the scope when disposed.

Remarks

Always use this in a using statement or block to ensure proper cleanup. Nested scopes are supported; each scope maintains its own error collection.

GetValidationError()

Gets the aggregated validation error from the current scope, or null if no errors were collected.

public static ValidationError? GetValidationError()

Returns

ValidationError

A ValidationError containing all collected field errors, or null if no validation errors were recorded.