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avdi/prevent-recursion.rb

Created January 12, 2012 00:35
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Prevent recursion in Ruby
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prevent-recursion.rb
def self.prevent_recursion(method_name)
flag_name = "in:#{name}##{method_name}"
original = instance_method(method_name)
define_method(method_name) do |*args|
if Thread.current[flag_name]
return
else
begin
Thread.current[flag_name] = true
original.bind(self).call(*args)
ensure
Thread.current[flag_name] = nil
end
end
end
end
@lmarburger
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lmarburger commented Jan 12, 2012

That's pretty ingenius. Do you have a specific use case in mind?

@avdi
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avdi commented Jan 12, 2012

Fixing blankety blank blank active blanking record after save callbacks so they don't blanking stack overflow :-)

@lmarburger
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lmarburger commented Jan 12, 2012

Oh. Well that certainly sounds useful. Carry on!

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