34 lines
952 B
Ruby
34 lines
952 B
Ruby
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CouchRest::Design.class_eval do
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# Calculate and update the checksum of the Design document.
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# Used for ensuring the latest version has been sent to the database.
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#
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# This will generate an flatterned, ordered array of all the elements of the
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# design document, convert to string then generate an MD5 Hash. This should
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# result in a consisitent Hash accross all platforms.
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#
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def checksum!
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# create a copy of basic elements
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base = self.dup
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base.delete('_id')
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base.delete('_rev')
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base.delete('couchrest-hash')
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result = nil
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flatten =
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lambda {|r|
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(recurse = lambda {|v|
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if v.is_a?(Hash)
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v.to_a.map{|v| recurse.call(v)}.flatten
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elsif v.is_a?(Array)
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v.flatten.map{|v| recurse.call(v)}
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else
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v.to_s
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end
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}).call(r)
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}
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self['couchrest-hash'] = Digest::MD5.hexdigest(flatten.call(base).sort.join(''))
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end
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end
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