update carton

lib/pages/delivery_address/model/delivery_address_model.dart

@@ -84,4 +84,16 @@ class DeliveryAddressModel extends BaseModel {
     return Services.instance.deliveryAddressService
         .selectDefalutDeliveryAddress(deliveryAddress);
   }
+
+  Future<List<DeliveryAddress>> getDeliveryAddresses(String userID) async {
+    String path = "$delivery_address_collection/";
+    var querySnap = await Firestore.instance
+        .collection('users')
+        .document("$userID")
+        .collection("$path")
+        .getDocuments();
+    return querySnap.documents
+        .map((e) => DeliveryAddress.fromMap(e.data, e.documentID))
+        .toList();
+  }
 }