controller

angular.module('mymodule').controller "ItemNewCtrl", ['$scope', '$modal', '$http', 'current_session', ($scope, $modal, $http, current_session)->

  $scope.item = current_session.item

  $scope.submitItem = (data, redirect_url) ->
    $http.post("/new_item_url", data).success(
      (send_response)->
        window.location.href = redirect_url
    ).error(
      (r)->
        Flashing.setMessage("bad","Error." )
    )

  $scope.create = (item)->
    data = { item: item }
    # CREATING A NEW item
    $scope.submitItem(data, "/redirect_url")
]

html

<div ng-controller="ItemNewCtrl">
   <form ng-submit="create(item);" ng-init="item = <%= @item.to_json %>">
      <textarea id="item_description" ng-model="item.description"><%= @item[:description] %></textarea>
      <input type="hidden" ng-model="item.attribute">
      <button type="submit">Submit</button>
  </form>
</div>