50 lines
709 B
Ruby
50 lines
709 B
Ruby
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module GetData
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def self.chain(obj, *methods)
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methods.each do |m|
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if m.is_a?(Array)
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params = m[1..-1]
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m = m[0]
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end
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if obj != nil && obj.respond_to?(m)
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obj = obj.send(m, *params)
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elsif obj.respond_to?(:has_key?) && obj.has_key?(m)
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obj = obj[m]
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else
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return nil
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end
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end
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return obj
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end
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def self.hash(h, *keys)
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keys.each do |k|
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if h.has_key?(k)
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h = h[k]
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else
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return nil
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end
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end
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return h
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end
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def self.obj(obj, *methods)
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methods.each do |m|
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if m.is_a?(Array)
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params = m[1..-1]
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m = m[0]
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end
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if obj != nil && obj.respond_to?(m)
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obj = obj.send(m, *params)
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else
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return nil
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end
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end
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return obj
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end
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end
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