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Versions: 9
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Contents
module Tuning
module Validations
extend ActiveSupport::Concern
class CountValidator < ActiveModel::EachValidator
MESSAGES = { is: :wrong_count, minimum: :too_few, maximum: :too_many }
CHECKS = { is: :==, minimum: :>=, maximum: :<= }
def initialize(options)
if range = (options[:in] || options[:within])
options[:minimum] = range.min
options[:maximum] = range.max
end
super
end
def validate_each(record, attribute, value)
if value.respond_to?(:size)
count = value.size
CHECKS.each do |name, operator|
if options.has_key?(name)
other = options[name]
unless count.send(operator, other)
record.errors.add attribute, MESSAGES[name], count: other
end
end
end
else
record.errors.add attribute, :uncountable
end
end
end
module ClassMethods
def validates_count_of(*attr_names)
validates_with CountValidator, _merge_attributes(attr_names)
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems