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require "securerandom"
module FriendlyId
# This class provides the slug candidate functionality.
# @see FriendlyId::Slugged
class Candidates
include Enumerable
def initialize(object, *array)
@object = object
@raw_candidates = to_candidate_array(object, array.flatten(1))
end
def each(*args, &block)
return candidates unless block
candidates.each { |candidate| yield candidate }
end
private
def candidates
@candidates ||= begin
candidates = normalize(@raw_candidates)
filter(candidates)
end
end
def normalize(candidates)
candidates.map do |candidate|
@object.normalize_friendly_id(candidate.map(&:call).join(" "))
end.select { |x| wanted?(x) }
end
def filter(candidates)
unless candidates.all? { |x| reserved?(x) }
candidates.reject! { |x| reserved?(x) }
end
candidates
end
def to_candidate_array(object, array)
array.map do |candidate|
case candidate
when String
[-> { candidate }]
when Array
to_candidate_array(object, candidate).flatten
when Symbol
[object.method(candidate)]
else
if candidate.respond_to?(:call)
[candidate]
else
[-> { candidate.to_s }]
end
end
end
end
def wanted?(slug)
slug.present?
end
def reserved?(slug)
config = @object.friendly_id_config
return false unless config.uses? ::FriendlyId::Reserved
return false unless config.reserved_words
config.reserved_words.include?(slug)
end
end
end
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