Help with clean architecture

I wondered how I could return the DTO without breaking anything.

Here is the code from the service where I access the entity.

public async Task<IReadOnlyList<Todo>> GetAllTodosAsync()
{
    var result = await _repository.GetAllAsync();
    if (result is not null)
         return result;
    else
        throw new Exception("List is null");
}

public async Task<IReadOnlyList<Todo>> GetAllTodosAsync()
{
    var result = await _repository.GetAllAsync();
    if (result is not null)
         return result;
    else
        throw new Exception("List is null");
}

And here in the controller

[HttpGet]
public async Task<ActionResult<IReadOnlyList<Todo>>> GetAll()
{
    var todos = await _todoService.GetAllTodosAsync();
    return Ok(todos);
}

[HttpGet]
public async Task<ActionResult<IReadOnlyList<Todo>>> GetAll()
{
    var todos = await _todoService.GetAllTodosAsync();
    return Ok(todos);
}

I could create a mapper right here in the controller, but is that a good approach?
If I'm doing anything, it's purely because I don't like the way it glows in the swager.

Here:

and the DTO that should replace the Todo entity itself looks virtually identical to it, but the point is that I don't think it's a good idea to expose the entity.

public record TodoResponseDto(...)

public record TodoResponseDto(...)

C#•7mo ago•

8 replies

WizzyWodich

Help with clean architecture

I wondered how I could return the DTO without breaking anything.

Here is the code from the service where I access the entity.

public async Task<IReadOnlyList<Todo>> GetAllTodosAsync()
{
    var result = await _repository.GetAllAsync();
    if (result is not null)
         return result;
    else
        throw new Exception("List is null");
}

public async Task<IReadOnlyList<Todo>> GetAllTodosAsync()
{
    var result = await _repository.GetAllAsync();
    if (result is not null)
         return result;
    else
        throw new Exception("List is null");
}

And here in the controller

[HttpGet]
public async Task<ActionResult<IReadOnlyList<Todo>>> GetAll()
{
    var todos = await _todoService.GetAllTodosAsync();
    return Ok(todos);
}

[HttpGet]
public async Task<ActionResult<IReadOnlyList<Todo>>> GetAll()
{
    var todos = await _todoService.GetAllTodosAsync();
    return Ok(todos);
}

public record TodoResponseDto(...)

public record TodoResponseDto(...)

Help with clean architecture

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