43

I would like to define a Ruby (1.9.2)-on-Rails(3.0.5) rake task which adds a user to the User table. The file looks like this:

#lib/tasks/defaultuser.rake
require 'rake'
namespace :defaultuser do
  task :adduser do 
    u=User.new
    u.email="bob@example.com"
    u.password="password"
    u.save
    u.errors.each{|e| p e}
  end
end

I would then invoke the task as 

> rake defaultuser:adduser

I tested the code in the :adduser task in the Rails console, and it works fine. I tested the rake task, running only 

print "defaultuser:adduser"

in the body of the task, and it worked fine.

However, when I combined them, it complained, saying 

rake aborted!
uninitialized constant User

I tried a 

require File.expand_path('../../../app/models/user.rb', __FILE__)

at above the namespace definition in the rake file, but that didn't work. I got

rake aborted!
ActiveRecord::ConnectionNotEstablished

What do I need to do so that I have the same access to the User model class in the Rake task that I have in the Rails console?

Jay Godse
  • 15,163
  • 16
  • 84
  • 131
  • Similar question: [Do rails rake tasks provide access to ActiveRecord models?][1] [1]: http://stackoverflow.com/questions/876396/do-rails-rake-tasks-provide-access-to-activerecord-models – Fernando Kosh May 07 '12 at 03:54

1 Answers1

102

You're close :)

#lib/tasks/defaultuser.rake
require 'rake'
namespace :defaultuser do
  task :adduser => :environment do
    ...
  end

Note the use of :environment, which sets up the necessary Rails environment prior to calling the rake task. After that, your User object will be in scope.

tobinharris
  • 2,559
  • 1
  • 21
  • 19