Hello! In my users table I have a downloads field.
I would like that when the user enters the page I add +1 in that user field.
What is the best way to do this? Do I really need to do 2 querys? get the current value and then add another one, or is there a way to simply add a value to that existing value?
If you look at the logs , you'll find that Devise only searches for the user ( SELECT ... FROM usuarios ... ) once in the request, and then returns cache if requested.
So there's no problem in using:
current_usuario.downloads + 1
to update. Try one of the approaches, if it does not work let me know:
current_usuario.downloads = current_usuario.downloads + 1
current_usuario.save
# ou
Usuario.update(current_usuario.id, downloads: (current_usuario.downloads + 1))