```ruby
class ContentController < ApplicationController
  around_filter :track_user

  def home
  end

  def post
    redirect_to root_path
  end

  def delete
    redirect_to root_path
  end

end
```

Add put and index actions
user
```ruby
class ContentController < ApplicationController
  around_filter :track_user

  def index
  end

  def post
    redirect_to root_path
  end

  def put
    redirect_to root_path
  end

  def delete
    redirect_to root_path
  end

end
```
assistant