FastProjects.ResultPattern

Result pattern implementation with IActionResult mapping for ASP.NET Core.

Overview

• Result - Result pattern implementation
• ResultPatternToActionResultExtensions - Extensions for mapping Result to IActionResult
• ResultExtensions - Extensions for Result that checks status codes

Usage

Result

Basic usage example:

public async Task<Result<User>> GetByIdAsync(Guid id) { var user = await _userRepository.GetAsync(id); if (user is null) { return Result.NotFound($"User with {id} not found."); } return Result.Success(user); }

Translation of the result to IActionResult (example with FastEndpoints usage):

public override async Task HandleAsync( GetUserByIdRequest request, CancellationToken ct) { var command = new GetUserByIdQuery(request.UserId); var result = await mediator.Send(command, ct); if (result.IsSuccess) { Response = new GetUserByIdResponse( Id: result.Value.Id, Name: result.Value.Name); } else { await SendResultAsync(result.ToWebResult()); } }

TODO:

• Add json serializer tests
• Add implicit operator tests
• Example usage with FluentValidation