Returning value from fastlane fastfile

Question

My shell script would trigger a fastlane action (ruby) and I need return some value back to the shell script

One option being suggested everywhere is to set it as a env variable. But unable to print the value in shell script.

Fastlane action

platform :ios do
  desc "Description of what the lane does"
  lane :getData do
        ENV['FL_VALUE'] = "Test"
  end
end

Sample shell script

!/bin/sh
...
bundle exec fastlane getData
...
echo $FL_VALUE

other suggestions were to write the data into some file and read it from the shell script. But would prefer to use the env variable.

You can’t export an ENV variable to the parent shell from ruby but you can write a bash file that does it see https://stackoverflow.com/questions/2660571/exporting-an-environment-variable-in-ruby — Guillermo Siliceo Trueba, Jul 10 '19 at 02:00
Please open an issue at the fastlane repository with a feature request - being able to return data from a lane seems like a reasonable and very useful thing. — janpio, Jul 10 '19 at 08:53
saw couple of postings requesting for that on their github repo, but no solution yet from then. But yes, will give a shot — nakeer, Jul 19 '19 at 05:52

score 1 · Answer 1 · answered Feb 18 '20 at 22:34

The project I am working on calls fastlane scripts from Groovy scripts. We have the lanes take an output_file option and write their results there. The Groovy scripts then read the results from the file. Cumbersome, but effective.

BTW: we also have an error_file option so errors can be written out similarly...

Returning value from fastlane fastfile

1 Answers1