running a generator programatically

run_generator.rb

# Must be run in the context of your rails app
# if you put this in a rake task, you'll need to ensure the task depends on the :environment task

require 'rails/generators'
require "#{::Rails.root.to_s}/lib/generators/foo_bar/article/article_generator.rb"

# make a generator (new calls .shift on the first arg, so it must be looking for an array)
gen = FooBar::ArticleGenerator.new(["Der title of der article"])

# run your create_ methods here:
gen.create_article
gen.create_article_file