Created
May 22, 2011 11:57
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Using method_missing properly by calling `super`
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# This snippet is taken from: | |
# "The Polite Programmer's Guide to Ruby Etiquette" | |
# http://bit.ly/hrwdPY | |
class BlackMagicStereo < Stereo | |
def method_missing(name, *args) | |
if sym.to_s =~ /^play_(\w+)$/ | |
system("open songs/#{$1}.m4a") | |
else | |
# Here, very important! | |
# Don't forget to delegate up to previous implementation | |
super | |
end | |
end | |
end | |
stereo = BlackMagicStereo.new | |
stereo.play_back_magic_woman # This works | |
# This fails if you don't call `super` | |
# Because it's defined somewhere in the inherited classes | |
stereo.play("Magic Bus") |
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