How do I run a Ruby file in a Rails environment?

Question

I want to run a Ruby file in the context of a Rails environment. rails runner almost does what I want to do, but I\'d like to just give it the file name and arguments. I\'m

Answer 1

This is an old question, but in my opinion I often find it helpful to create a rake task... and it's actually very easy.

In lib/tasks/example.rake:

namespace :example do

desc "Sample description you'd see if you ran: 'rake --tasks' in the terminal"
task create_user: :environment do
  User.create! first_name: "Foo", last_name: "Bar"
end

And then in the terminal run:

rake example:create_user

Locally this will be run in the context of your development database, and if run on Heroku it will be run while connected to your production database. I find this especially useful to assist with migrations, or modified tables.