Possible API for developing RESTful routes & handlers in Dynamo

fruit_collection_handler.ex

defmodule FruitCollectionHandler do
  use Dynamo.RESTHandler
  
  allowed_methods ["GET", "POST", "OPTIONS"]
  
  provide "application/json", :get_json
  provide "text/html", :get_html
  accept "application/json", :post_json
  
  prepare do
    conn.fetch [:cookies, :params]
  end

  # When collection handlers want to post for new resources...
  def allow_missing_post do true end
  
  def service_available
    # Some code to determine if we can respond
  end
  
  def get_json
    get_fruit |> Jiffy.encode |> conn.resp_body
  end
  
  def get_html
    conn.assign :fruit_collection, get_fruit
    render conn, "fruit_collection.html"
  end
  
  defp get_fruit
    Fruit.to_sequence.reverse
  end
  
  def post_json
    # some code to write JSON
    conn
  end

end

fruit_object_handler.ex

defmodule FruitObjectHandler do
  use Dynamo.RESTHandler
  
  allowed_methods ["GET", "PUT", "DELETE", "OPTIONS"]
  
  provide "application/json", :get_json
  provide "text/html", :get_html
  accept "application/json", :put_json
  
  prepare do
    conn.fetch [:cookies, :params]
  end
  
  def resource_exists
    
  end

  def service_available
    # Some code to determine if we can respond
  end
  
  def last_modified
    # The last time this resource was changed
  end

  def get_json
    get_fruit(conn) |> Jiffy.encode |> conn.resp_body
  end
  
  def get_html
    fruit = get_fruit(conn)
    conn.assign(:name, fruit.name)
    render(conn, "fruit.html")
  end
  
  defp get_fruit(conn)
    Fruit.read(conn.params[:fruit_id])
  end
  
  def put_json
    # some code to write JSON
    conn
  end

end

rest_router.ex

defmodule FruitRouter do
  use Dynamo
  use Dynamo.Router
  
  config :server, port: 3030
  
  # New resource macro for simple restful handlers
  resource "/fruit", FruitCollectionHandler
  resource "/fruit/:id", FruitObjectHandler
end