Question

I have a Rails 3 form, with data-remote => true.

The form field is handle, like a twitter handle. I want to add validation to ensure it’s handle friendly, meaning, no spaces, or non-url friendly characters.

Where to start, do I build a customer validation for this?

Thanks

Answer 1

Looks like you want to use validates_format_of

class Product < ActiveRecord::Base
  validates_format_of :handle, :with => /\A[a-zA-Z]+\z/, :message => "Only letters allowed"
end

Change the regular expression pattern to match your needs. See the Rails Guides on validation for more information.