routes.js.coffee

# Provides a method of accessing our URL routes from JavaScript.

<%# Helper function to define our routes %>
<% route = lambda { |*args|
  route_name = args.shift
  route_args = args.map { |kw| ":#{kw}" } # Provide interpolation of route arguments
  route_args.push({ :only_path => true})
  url = MyApp::Application.routes.url_helpers.send("#{route_name}_url", *route_args).to_json 
  "#{route_name}_url : route(#{url})" } %>

# Route wrapper function. All routes are functions with return a route URL.
# That function takes a hash of arguments and options.
route = (url) ->
  (parameters = {}) ->
    # If not a hash, first argument is the ID.
    if typeof paremeters == "string" or typeof parameters == "number"
      parameters = { id : parameters }

    # Parse out the parameters in the URL
    processedUrl = url
    $.each parameters, (key, value) ->
      processedUrl = processedUrl.replace(":#{key}", escape(value))

    # Replace out any unused arguments
    processedUrl = processedUrl.replace(/([0-9a-z_]+)=\:(\1)(&?)/g, "")
    processedUrl

MyApp.routes =
  <%= route[:posts] %>
  <%= route[:post, :id] %>
  <%= route[:post_comment, :post_id, :id] %>

  <%= route[:root] %>