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23 lines
598 B
Ruby
23 lines
598 B
Ruby
# encoding: utf-8
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# author: Dominik Richter
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# author: Christoph Hartmann
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module ObjectTraverser
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def extract_value(keys, value)
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key = keys.shift
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return nil if key.nil? || value.nil?
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# if value is an array, iterate over each child
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if value.is_a?(Array)
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value = value.map { |i|
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extract_value([key], i)
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}
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else
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value = value[key.to_s].nil? ? nil : value[key.to_s]
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end
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# if there are no more keys, just return the value
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return value if keys.first.nil?
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# if there are more keys, extract more
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extract_value(keys.clone, value)
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end
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end
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