Question

Hi I have a ruby regex I made usinig Rubular
http://rubular.com/r/RRc8twB6NL which is meant to check for a decimal 10.00 for pricing. I get it to work on Rubular, but in my application this code does not work:

validates_format_of :price, :with=>/^([0-9]{1,}\.{0,}[0-9]{0,2})$/

Thanks for any help

Answer 1

In case you only want to have prices with one digit and then zeros you need the regex

/\A[1-9]0*\.\d\d\z/

If any number is allowed before the decimal dot it is

/\A[1-9]\d*\.\d\d\z/

If the fraction part is optional it is either of

/\A[1-9]0*(\.\d\d)?\z/
/\A[1-9]\d*(\.\d\d)?\z/

If you want to allow for the dollar sign (maybe with spaces in between) it is either of

/\A(\$\s*)?[1-9]0*\.\d\d\z/
/\A(\$\s*)?[1-9]\d*\.\d\d\z/
/\A(\$\s*)?[1-9]0*(\.\d\d)?\z/
/\A(\$\s*)?[1-9]\d*(\.\d\d)?\z/