Is there a way to change the DateTimeOffset to UtcDateTime or LocalDateTime in Model or Dto definiti-CodePudding

I have a .NET 6 Web API using Entity Framework. Some endpoints receive objects containing a datetimeoffset attribute and the incoming values are in the form of local datetime.

The problem is, with the latest version of PostgreSql, datetimeoffset values can only take the datetimeoffset inputs in ...T 00 UTC format. So when my value is something like ...T 03, I'm unable to write that to the database.

This is my model class

public class MyModel : BaseEntity
{
    public DateTimeOffset MyDate { get; set; }
}

And this is my dto class

public class Dto : BaseDto
{
    public DateTimeOffset MyDate { get; set; }
}

Temporary Solution

For now I change the format every time I post to and get from database in my service class as follows:

For post:

myDto.MyDate = myDto.MyDate.UtcDateTime;
var myModel = _mapper.Map<MyModel>(myDto);
await _unitOfWork.MyModelContext.CreateAsync(myModel);
await _unitOfWork.SaveAsync();
//...

For get:

var myModels = await _unitOfWork.MyModelContext.GetAll();
foreach(var myModel in myModels)
    myModel.MyDate = myModel.MyDate.LocalDateTime;
//...

//or

var myModel = await _unitOfWork.MyModelContext.GetById(id);
myModel.MyDate = myModel.MyDate.LocalDateTime;
//...

I know that this is a bad approach. I am wondering if it is possible to make this operation inside my Dtos or Models so that I don't need make this operation on each service.

I am open to other suggestions as well.

CodePudding user response：

You need to create a custom type converter like below.

public class DateTimeOffSetTypeConverter : ITypeConverter<DateTimeOffset, DateTimeOffset>
        {
            public DateTimeOffset Convert(DateTimeOffset source, DateTimeOffset destination, ResolutionContext context)
            {
                destination = source.UtcDateTime;
                return destination;
            }
        }

Then define it in your mapping configuration class.

var configuration = new MapperConfiguration(cfg => {
      
      cfg.CreateMap<DateTimeOffset, DateTimeOffset>().ConvertUsing(new DateTimeOffSetTypeConverter());
      
      //your mapping configurations
    });