```ruby
require "active_support/core_ext"
require "sinatra"

set :root, File.dirname(__FILE__)
set :server, "webrick"

configure do
  I18n.default_locale = "en-US"

  # Populate the content models
  require File.join(settings.root, "models", "content", "base.rb")
end

get "/" do
  erb :index, locals: { posts: BlogPost.all }
end

get "/:id" do
  erb :show, locals: { post: BlogPost.from_slug(params[:id]) }
end
```

Use new namespace and render 404 if blog post is not available
user
```ruby
require "active_support/core_ext"
require "sinatra"

set :root, File.dirname(__FILE__)
set :server, "webrick"

configure do
  I18n.default_locale = "en-US"

  # Populate the content models
  require File.join(settings.root, "models", "content", "base.rb")
end

get "/" do
  erb :index, locals: { posts: Content::BlogPost.all }
end

get "/:id" do
  post = Content::BlogPost.from_slug(params[:id])

  if post
    erb :show, locals: { post: post }
  else
    status 404
  end
end
```
assistant