Validate that a value is in a certain range, e.g. 1 <= val <=2

Question

I want to validate a number :value to be within 1 or 2

validates :value, :format => { :with => /1|2/, :message => \"Select number..\" }
         


        

Answer 1

You're looking for validates_inclusion_of:

validates_inclusion_of :value, :in => [1, 2],
  :message => "Select one of %{value}"

You can also use the (fairly new) shothand form and a Range instead of an Array:

validates :value, :inclusion => { :in => 1..2 }