nested attributes

Validador Rails3 personalizado para validar a contagem de registros na associação. class AssociationCountValidator < ActiveModel::Validations::LengthValidator MESSAGES = { :wrong_length => :association_count_invalid, :too_short => :association_count_greater_than_or_equal_to, :too_long => :association_count_less_than_or_equal_to }.freeze def initialize(options) …