If previous method ==?

Question

I would like to check when running a method, if it was called from a different method.

EX:

def method1(foo)
  if # foo previous method == method2
    #code
  elsif # foo previous method == method 3
    #code
  end
end

def method2
  method1(foo)
end

is there a way to do this?

may be related http://stackoverflow.com/questions/199527/get-the-name-of-the-currently-executing-method-in-ruby — Dan Bradbury, Nov 17 '13 at 00:03

score 4 · Accepted Answer · edited May 23 '17 at 10:25

4

Yes, you can use caller from Kernel as described in http://www.ruby-doc.org/core-2.0.0/Kernel.html#method-i-caller, although you'll need to extract the method name from the string that caller[0] returns.

Update: The little regex to extract the method name is shown in https://stackoverflow.com/a/5100339/1008891.

edited May 23 '17 at 10:25

Community

1
1

answered Nov 17 '13 at 00:02

Peter Alfvin

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A small clarification for readers who do not wish to check the docs: `caller` returns an array of strings that identifies the current execution stack. The first element of the array gives you calling method. – Cary Swoveland Nov 17 '13 at 03:24
@CarySwoveland Good clarification - my answer was pretty cryptic. I updated it slightly. – Peter Alfvin Nov 17 '13 at 03:28

If previous method ==?

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