```ruby
require 'guides_front_end'

class NonAuthConstraint
  def matches?(request)
    ! request.path.match(/^\/auth/)
  end
end

Guides::Application.routes.draw do
  authenticate :user do
    match '/preview/:edition_id' => GuidesFrontEnd::Preview, :anchor => false, :as => :preview_edition_prefix
  end

  namespace :admin do
    resources :transactions do
      post :progress, :on => :member
      resources :editions
    end
    
    resources :answers do
      post :progress, :on => :member
      resources :editions
    end
    
    resources :guides do
      post :progress, :on => :member
      resources :editions
    end
    
    root :to => 'guides#index'
  end
  
  resources :audiences
  resources :guides, :only => [:show]

  match "*path", :to => GuidesFrontEnd::App, :constraints => NonAuthConstraint.new
end
```

Disable requirement that you log in to preview as that was causing problems
user
```ruby
require 'guides_front_end'

class NonAuthConstraint
  def matches?(request)
    ! request.path.match(/^\/auth/)
  end
end

Guides::Application.routes.draw do
  # authenticate :user do
    match '/preview/:edition_id' => GuidesFrontEnd::Preview, :anchor => false, :as => :preview_edition_prefix
  # end

  namespace :admin do
    resources :transactions do
      post :progress, :on => :member
      resources :editions
    end
    
    resources :answers do
      post :progress, :on => :member
      resources :editions
    end
    
    resources :guides do
      post :progress, :on => :member
      resources :editions
    end
    
    root :to => 'guides#index'
  end
  
  resources :audiences
  resources :guides, :only => [:show]

  match "*path", :to => GuidesFrontEnd::App, :constraints => NonAuthConstraint.new
end
```
assistant