_deploying_to_heroku.step

step "Create a Heroku application" do
  console "heroku create"
  message "`heroku create` registers a new application on Heroku's system. You should see some output including your new app's URL."
end

step "Edit the Gemfile" do
  important "Each application has its own `Gemfile`. Be sure you're opening the one inside your app's folder."

  message "Heroku will run our application slightly differently than our development computer does, which requires us to make a small change to our `Gemfile`."

  message "Open the file called `Gemfile` in Sublime Text, or your preferred editor, and find the line containing:"

  source_code :ruby, <<-RUBY
gem 'sqlite3'
  RUBY

  message "**Remove that line** and replace it with:"

  source_code :ruby, <<-RUBY
group :development, :test do
  gem 'sqlite3'
end

group :production do
  gem 'pg'
end
  RUBY
end

step "Apply the Gemfile changes" do
  console "bundle install --without production"
  message "Every time the `Gemfile` changes, you need to run ``bundle install`` for the changes to be processed. The processed version of the changes is stored in another file called ``Gemfile.lock``."
  message "Here we are bundling without the gems in the group ``production``."
end

step "Commit the Gemfile changes" do
  message "There are now changes to `Gemfile` and `Gemfile.lock` that need to be committed before we can push to Heroku."
  console <<-SHELL
git add .
git commit -m "Changed Gemfile for Heroku"
  SHELL
  tip "There is a period after the word add in the first line."
end