On 01/26, Linus Pettersson wrote: > Hi! > > I have a model which has a field that can have three values only. I store > the value in the database as an integer, 0, 1 or 2, but when I display it I > want a more appropriate text. And, I want it to be translatable using i18n. > > Let's say that it corresponds to how difficult something is. So, 0 > represents "Easy", 1 represents "Normal" and 2 represents "Hard". > What I did was first to define it as a hash like this: > DIFFICULTIES = { "Easy" => 0, "Normal" => 1, "Hard" => 2 } > Then I can easily pass this to, for instance, simple_form and it will > generate a nice dropdown with the correct values. > > But let's say that I have the value and want to display the text. Then I'd > have to iterate over the hash to find which key corresponds to the right > value. Right? Not that big of an issue when there are three values as in > this example, but there could be more.
I don't know of any best practice for this, but searching in a hash takes, on average, O(1); so I don't think there's anything to worry about here. Of course, if the hash gets big you might end up with maintainability issues, but that's another story. > > How do you normally handle these cases? Is there any "best practice" to > handle this in an efficient manner? > > Cheers, > Linus > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk@googlegroups.com. > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msg/rubyonrails-talk/-/1fjJK_EjQ50J. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.