mirror of
https://github.com/openfoodfoundation/openfoodnetwork
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23 lines
673 B
Ruby
23 lines
673 B
Ruby
module PermalinkGenerator
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def self.included(base)
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base.extend(ClassMethods)
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end
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module ClassMethods
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def find_available_value(existing, requested)
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return requested unless existing.include?(requested)
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used_indices = existing.map do |p|
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p.slice!(/^#{requested}/)
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p.match(/^\d+$/).to_s.to_i
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end
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options = (1..used_indices.length + 1).to_a - used_indices
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requested + options.first.to_s
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end
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end
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def create_unique_permalink(requested)
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existing = self.class.where('id != ?', id).where("permalink LIKE ?", "#{requested}%").pluck(:permalink)
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self.class.find_available_value(existing, requested)
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end
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end
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