Question

I have a model with valid data; everything works.

In the form, I select as how to select the option I choose I want to be valid also 2 fields

validates_presence_of :is_ranking, :on => :update
validates :awards_count, :on => :update, :unless => :is_ranking == 1

Now as is_ranking == 1 to check again: awards_count
All sent from a form before being added to the database

How do I force rails to valid these two additional fields on the form I choose to rip options in select?

Answer 1

you should use symbol or string with :if and :unless

Try to replace condition with method

validates :awards_count, :on => :update, :unless => :is_ranking?

# You actually don't need that method in case your `is_ranking` field is `boolean`.
def is_ranking?
  is_ranking == 1
end

Or with string

validates :awards_count, :on => :update, :unless => "is_ranking?"