Can I access a private class method from a public instance method without using the class name?

Question

I have a class method, self.calculate, that I want to invoke from both another class method and from an instance method.

If I write

def green
  calculate(x,y,z)
end

though, I get a NoMethodError: undefined method 'calculate' exception. Invoking self.calculate gets the same problem.

What does work is calling MyClassName.calculate, but that seems somehow wrong and messy. What is the correct practice in this situation?

Umm ... MyClassName.calculate should not work if calculate is private as you claim. — Jörg W Mittag
– Jörg W Mittag, Commented Apr 10, 2015 at 7:16

spickermann · Accepted Answer · 2015-04-10 04:37:33Z

2

You can use

self.class.calculate

to call a class methods from an instance method.

answered Apr 10, 2015 at 4:37

spickermann

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