Here are the steps to utilize MediatR to modify a singular entry in a database:
public class UpdateEntryRequest : IRequest<bool>
{
public int Id { get; set; }
public string UpdatedData { get; set; }
}
public class UpdateEntryHandler : IRequestHandler<UpdateEntryRequest, bool>
{
private readonly IRepository _repository;
public UpdateEntryHandler(IRepository repository)
{
_repository = repository;
}
public async Task<bool> Handle(UpdateEntryRequest request, CancellationToken cancellationToken)
{
var entry = await _repository.GetEntryById(request.Id);
if (entry == null)
return false;
entry.Data = request.UpdatedData;
return await _repository.SaveChangesAsync() > 0;
}
}
services.AddTransient<IRequestHandler<UpdateEntryRequest, bool>, UpdateEntryHandler>();
public class MyController : Controller
{
private readonly IMediator _mediator;
public MyController(IMediator mediator)
{
_mediator = mediator;
}
public async Task<IActionResult> UpdateEntry(int id, string updatedData)
{
var request = new UpdateEntryRequest { Id = id, UpdatedData = updatedData };
var result = await _mediator.Send(request);
if (result)
return Ok();
else
return NotFound();
}
}
This is an example of how to utilize MediatR to modify a singular entry in a database. It's important to note that the above code is just an example and will need to be tailored to meet the specific needs of your application.
Asked: 2021-05-12 11:00:00 +0000
Seen: 10 times
Last updated: Jan 02 '22