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module Parameterizable
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def self.parameterize(string)
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string.gsub(/[\/.>]/, '-').gsub(/[<!*'();:@&=+$,?%#\[\]]/, '').chomp('-')
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end
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module ById
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extend ActiveSupport::Concern
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included do
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def to_param
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id.to_s
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end
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def self.from_param(id)
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self.find_by_id(id.to_i)
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end
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end
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end
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module ByIdName
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extend ActiveSupport::Concern
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included do
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def to_param
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# remove characters unsafe for urls, keep unicode ones
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Parameterizable.parameterize("#{id}-#{name}")
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end
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def self.from_param(id_name)
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self.find_by_id(id_name.to_i) if id_name =~ /\A\d+-/
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end
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end
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end
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module ByName
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extend ActiveSupport::Concern
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# Warning:
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# This parameterization is allowed only for resources that have url-safe names!
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# Check the name format validator before use.
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included do
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def to_param
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name
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end
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def self.from_param(name)
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self.find_by_name(name.to_s)
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end
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end
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end
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end
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