Add fulfillment event class

Author: mllemango

shopify/resources/__init__.py

@@ -38,6 +38,7 @@
 from .country import Country
 from .refund import Refund
 from .fulfillment import Fulfillment, FulfillmentOrders
+from .fulfillment_event import FulfillmentEvent
 from .fulfillment_service import FulfillmentService
 from .carrier_service import CarrierService
 from .transaction import Transaction

shopify/resources/fulfillment_event.py

@@ -0,0 +1,22 @@
+from ..base import ShopifyResource
+
+class FulfillmentEvent(ShopifyResource):
+    _prefix_source = "/orders/$order_id/fulfillments/$fulfillment_id"
+    _singular = "event"
+    _plural = "events"
+
+    @classmethod
+    def _prefix(cls, options={}):
+        order_id = options.get("order_id")
+        fulfillment_id = options.get('fulfillment_id')
+        if order_id:
+            return "%s/orders/%s/fulfillments/%s" % (
+                cls.site, order_id, fulfillment_id)
+        else:
+            return cls.site
+
+    def save(self):
+      status = self.attributes['status']
+      if status not in ['label_printed', 'label_purchased', 'attempted_delivery', 'ready_for_pickup', 'picked_up', 'confirmed', 'in_transit', 'out_for_delivery', 'delivered', 'failure']:
+        raise AttributeError("Invalid status")
+      return super(ShopifyResource, self).save()