Hi - I want to allow duplicate fields values if the field is blank, but disallow duplicates if it's not. Is there a validates_uniqueness_of_if_present equivalent? Thanks, Dino
on 2008-11-19 12:42
on 2008-11-19 12:54
You can use :allow_nil or :allow_blank attributes to it like validates_uniqueness_of :email, :allow_nil => true this would skip the validation if field is nil. :allow_blank works same way on empty strings. And then all/most validations com with the :if and :unless options that would allow for more detailed determination if the validation should be used
on 2008-11-19 13:09
dino d. wrote: > Hi - I want to allow duplicate fields values if the field is blank, > but disallow duplicates if it's not. Is there a > validates_uniqueness_of_if_present equivalent? > > Thanks, > Dino Hi, As you required to place duplicate value if field is blank than you just use validates_uniqueness_of :field_name,:allow_blank => 'true' :allow_nil - If set to true, skips this validation if the attribute is nil (default is false). :allow_blank - If set to true, skips this validation if the attribute is blank (default is false).