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module FriendlyId
# The default slug generator offers functionality to check slug candidates for
# availability.
class SlugGenerator
def initialize(scope, config)
@scope = scope
@config = config
end
def available?(slug)
if @config.uses?(::FriendlyId::Reserved) && @config.reserved_words.present? && @config.treat_reserved_as_conflict
return false if @config.reserved_words.include?(slug)
end
if @config.treat_numeric_as_conflict && purely_numeric_slug?(slug)
return false
end
!@scope.exists_by_friendly_id?(slug)
end
def generate(candidates)
candidates.each { |c| return c if available?(c) }
nil
end
private
def purely_numeric_slug?(slug)
return false unless slug
begin
Integer(slug, 10).to_s == slug.to_s
rescue ArgumentError, TypeError
false
end
end
end
end
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