WIP: BOM Refactor, building order_cycle fetch and update logic with ngResource

app/assets/javascripts/admin/order_cycles/services/order_cycle_resource.js.coffee

@@ -0,0 +1,8 @@
+angular.module("admin.orderCycles").factory 'OrderCycleResource', ($resource) ->
+  $resource('/admin/order_cycles/:id/:action.json', {}, {
+    'index':
+      method: 'GET'
+      isArray: true
+    'update':
+      method: 'PUT'
+  })

app/assets/javascripts/admin/order_cycles/services/order_cycles.js.coffee

@@ -0,0 +1,34 @@
+angular.module("admin.orderCycles").factory 'OrderCycles', ($q, OrderCycleResource) ->
+  new class OrderCycles
+    orderCyclesByID: {}
+    pristineByID: {}
+
+    index: (params={}, callback=null) ->
+    	OrderCycleResource.index params, (data) =>
+        for orderCycle in data
+          @orderCyclesByID[orderCycle.id] = orderCycle
+          @pristineByID[orderCycle.id] = angular.copy(orderCycle)
+
+        (callback || angular.noop)(data)
+
+    save: (order_cycle) ->
+      deferred = $q.defer()
+      order_cycle.$update({id: order_cycle.id})
+      .then( (data) =>
+        @pristineByID[order_cycle.id] = angular.copy(order_cycle)
+        deferred.resolve(data)
+      ).catch (response) ->
+        deferred.reject(response)
+      deferred.promise
+
+    saved: (order_cycle) ->
+      @diff(order_cycle).length == 0
+
+    diff: (order_cycle) ->
+      changed = []
+      for attr, value of order_cycle when not angular.equals(value, @pristineByID[order_cycle.id][attr])
+        changed.push attr unless attr is "$$hashKey"
+      changed
+
+    resetAttribute: (order_cycle, attribute) ->
+      order_cycle[attribute] = @pristineByID[order_cycle.id][attribute]