CODEWITHSUNDEEP
rubyexceptionrack
B Seven
B Seven

Reputation: 45941

Is it possible to use rescue with a conditional?

Consider a Rack app. I only want to handle the error if we are not running a test:

begin
  do_something

  if ENV[ 'RACK_ENV' ] != 'test'
    rescue => error
      handle_error error
    end
  end
end

This generates syntax error, unexpected keyword_rescue (SyntaxError) rescue => error

Is there a way to do this?

Upvotes: 15

Views: 11567

Answers (3)

Steven
Steven

Reputation: 1

You have to raise the error, or it will change the error to RuntimeError

My solution would be

begin
  do_something
rescue => error
  handle_error error if ENV['RACK_ENV'] != 'test'

  raise error
end

Upvotes: 0

Justin Wood
Justin Wood

Reputation: 10061

Could you do something like this?

begin
  do_something

rescue => error
  if ENV["RACK_ENV"] == "test"
    raise error
  else
    handle_error error
  end
end

This would re-throw the exception if you are not testing.

EDIT

As @Max points out, you can be a little more succinct with this.

begin
  do_something

rescue => error
  raise if ENV["RACK_ENV"] == "test"

  handle_error error
end

Upvotes: 16

maerics
maerics

Reputation: 156612

You could always rescue it then then either handle or rethrow depending on your condition

begin
  do_something
rescue => error
  if ENV['RACK_ENV'] != 'test'
    handle_error error
  else
    raise error
  end
end

Upvotes: 3

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