CODEWITHSUNDEEP
ruby-on-railsruby
Michael Guterl
Michael Guterl

Reputation: 853

finding a stray puts in ruby code

We have a fairly large rails application and I have started this output in our unicorn.log:

#:0xc644248>#:0xc644248>#:0xc4f06e4>#:0xc4f06e4>#:0xca481b4>#:0xca481b4>#:0xc53f604>#:0xc53f604>#:0xcd7a60c>#:0xcd7a60c>#:0xc5df2f8>#:0xc5df2f8>#:0xc69fd00>#:0xc69fd00>#:0xc560ae8>#:0xc560ae8>

It seems to me like there probably is a stray Kernel.puts method call somewhere, but I've been searching for hours and can't find it.

Anyone have tips for tracking something like this down?

Upvotes: 3

Views: 263

Answers (4)

Andrew Grimm
Andrew Grimm

Reputation: 81450

Have you checked for display? That's another method that prints stuff out.

Upvotes: 2

bdorry
bdorry

Reputation: 978

This is what I use, it's similar to Banang's answer but maybe even simpler. Do a grep from the directory like so:

grep -rn 'puts' .

Sure it searches everything but you can run it in whatever directory you want to limit that. That should give you the file and line number you need. You can fine tune the search criteria as you wish.

Upvotes: 0

Mia Clarke
Mia Clarke

Reputation: 8204

You could go over all the files and search for any calls to Kernel.puts, like so:

find -iname "*.rb" | xargs grep -iR 'Kernel.puts'

However, in terms of neatness (and effectiveness), I would probably go for the solution provided by Jeff Paquette.

Upvotes: 1

Jeff Paquette
Jeff Paquette

Reputation: 7127

You could monkey patch puts, and raise an exception when it's called. You could even fine tune that with a regexp match on your output string (which looks like a recursive object dump).

module Kernel
  def puts (s)
    raise "puts called, check the backtrace for the source" if s =~ /#:[a-z0-9]>*/
  end
end

It could also be that it's not a call to puts, but rather #inspect.

Upvotes: 9

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