Validation for non-negative integers and decimal values

Question

My fields are: tax rate and tax amount in which I want to validate positive values.

I wrote this validation:

:format => { :w         


        

Answer 1

You could use:

validates :tax_rate, inclusion: { in: 0..5 }

It allows values like: 0, 2, 1.2, 3.2

Hope it helps!

Answer 2

you could use validates_numericality_of :amount, :greater_than => 0.0

Answer 3

Doesn't this work?

validates :your_field, :numericality => { :greater_than_or_equal_to => 0 }

(guess for taxes following rule will be more correct:)

validates :your_field, :numericality => { :greater_than_or_equal_to => 0, :less_than_or_equal_to => 100 }