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In my rails application there’s a signup form which includes a DOB field.
The user’s age need not to be more than 18.How can i give validation for this one.
My dob format is mm/dd/yy
The syntax for this is pretty fun, you could do something like this:
Turn your string into a date, add 18 years, and see if it is before or after today.
If you want to put this in a model validator, this railscast could be useful:
http://railscasts.com/episodes/211-validations-in-rails-3