Pass ruby script file to rails console

Question

Is there a way to pass ruby file, foo.rb to rails console. Expected results would be after console starts rails environment to run file.

Or any other way which

Answer 1

In the meantime, this solution has been supported.

rails r PATH_TO_RUBY_FILE

Much simpler now.

Answer 2

You can use

bundle exec rails runner "eval(File.read 'your_script.rb')"

UPDATE:

What we also have been using a lot lately is to load the rails environment from within the script itself. Consider doit.rb:

#!/usr/bin/env ruby

require "/path/to/rails_app/config/environment"

# ... do your stuff

This also works if the script or the current working directory are not within the rails app's directory.

Answer 3

script/console --irb=pry < test.rb > test.log

simple, dirty, and block the process at the end, but it does the job exactly like I wanted.

Answer 4

Of these approaches mentioned earlier, none seemed clean and ideal like you would expect a standalone script to run (not get eval-ed or piped via < redirection), but finally this works perfect for me:

(for Rails 3)

Insert at the top of your script:

#!/usr/bin/env ruby

APP_PATH = File.expand_path(appdir = '/srv/staging/strat/fundmgr/config/application',  __FILE__)
require File.expand_path(appdir + '/../boot',  __FILE__)
require APP_PATH
# set Rails.env here if desired
Rails.application.require_environment!

# your code here...

Of course, set your own Rails app path in the APP_PATH line.

That way, I can avoid having to enter any interactive irb or rails c and can test my script.rb from the shell prompt, before eg. scheduling it in crontab.

It smoothly supports command-line parameters, too, and minimizes the levels of wrappers before getting to your code.

CREDIT (also shows a Rails 2 example)

http://zerowidth.com/2011/03/18/standalone-script-runner-bin-scripts-in-rails.html

Answer 5

Here's the hack I'm using:

rr() {
    rails_root="$(bundle exec rails runner "puts Rails.root")"
    rp="$(relpath "$1" "$rails_root")"
    bundle exec rails runner "eval(File.read '$rp')"
}
relpath() {python -c "import os.path; print os.path.relpath('$1','${2:-$PWD}')";}

Example:

cd ~/rails_project/app/helpers
rr my_script.rb

Based on @moritz's answer here. I changed it, since the working directory for File.read is the Rails project root.

I know this is some serious heresy, using python to help a ruby script. But I couldn't find a relpath method built into ruby.

Credit: relpath() was taken from @MestreLion, Convert absolute path into relative path given a current directory using Bash

Answer 6

Actually, the simplest way is to run it with load inside the rails console

 load './path/to/foo.rb'