Rails id in db, but without model

Question

In my db i have such field:

color_id

and in form i use such code, to store it in db:

= f.select :color_id, options_for_select([["белый", 1], ["желтый", 2], ["зеленый", 3], ["коричневый", 4], ["красный", 5], ["оранжевый", 6], ["серебристый", 7], ["серый", 8], ["синий", 9], ["фиолетовый", 10], ["черный", 11], ["другой", 12]], :selected => f.object.color_id), {:prompt => "Выберите цвет кузова"}, required: true

so i decide to to without model and db table, just id from html form, and this id store in db.

But how to view in show action not it, but color?

I can do it only with if, like:

- if c.color_id == 1
  белый
- if c.color_id == 2
  желтый

but maybe there is more elegant and good solution? How to change id, to array's color in my case

Answer 1

you can define method color, which will put text based on color_id

def color(color_id)
  colors[color_id]
end

def colors
  ["name1", "name2"]
end

Please note that the array starts from 0, and in your code ids start from 1

Answer 2

You can create a Hash in model having color_id field like following:

COLORS = {"1" => "белый", "2" => "желтый",...}

And then you can call a method in model for getting the print the color

def color
  COLORS[color_id.to_s]
end