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Contents
module Incline
##
# Validates a string value to ensure it is a safe name.
#
# A safe name is one that only contains letters, numbers, and underscore.
# It must also start with a letter and cannot end with an underscore.
class SafeNameValidator < ActiveModel::EachValidator
##
# Validates a string to ensure it is a safe name.
VALID_MASK = /\A[a-z](?:_*[a-z0-9]+)*\z/i
##
# Validates attributes to determine if the values match the requirements of a safe name.
def validate_each(record, attribute, value)
unless value.blank?
unless value =~ VALID_MASK
if value =~ /\A[^a-z]/i
record.errors[attribute] << (options[:message] || 'must start with a letter')
elsif value =~ /_\z/
record.errors[attribute] << (options[:message] || 'must not end with an underscore')
else
record.errors[attribute] << (options[:message] || 'must contain only letters, numbers, and underscore')
end
end
end
end
end
end
Version data entries
48 entries across 48 versions & 1 rubygems