add delivery

lib/pages/shipment/model/shipment_model.dart

@@ -38,7 +38,7 @@ class ShipmentModel extends BaseModel {
     logout();
     _menuSelectedIndex = 1;
     _loadShipments(forCustomer, myPickup);
-    _delivered = _getDeliveredExample(forCustomer);
+    _delivered = _getDelivered(forCustomer);
     _delivered.load();
   }
 
@@ -77,7 +77,7 @@ class ShipmentModel extends BaseModel {
               user.hasProcessing()))) throw "No privilege";
     }
     var pageQuery = Firestore.instance
-        .collection("/$packages_collection")
+        .collection("/$shipments_collection")
         .where("is_delivered", isEqualTo: true)
         .where("is_deleted", isEqualTo: false);
     if (isCustomer) {
@@ -90,35 +90,15 @@ class ShipmentModel extends BaseModel {
     return paginator;
   }
 
-  int count = 0;
-  Paginator _getDeliveredExample(bool onlyFcs) {
-    count = 1;
-    var pageQuery = Firestore.instance
-        .collection(
-            "/users/8OTfsbVvsUOn1SLxy1OrKk7Y_yNKkVoGalPcIlcHnAY/messages")
-        .orderBy("date", descending: true);
-    var paginator = new Paginator(pageQuery, rowPerLoad: 20, toObj: (data, id) {
-      var m = Message.fromMap(data, id);
-      return Shipment(
-        id: m.id,
-        shipmentNumber: m.message,
-        status: m.senderName,
-        pickupDate: m.date,
-      );
-    });
-    return paginator;
-  }
-
   Future<void> _loadShipments(bool forCustomer, bool myPickup) async {
     if (user == null) return;
     if (!forCustomer && !user.hasShipment()) return;
-    String path = "/$shipments_collection";
     if (listener != null) listener.cancel();
     _shipments = [];
 
     try {
       var q = Firestore.instance
-          .collection("$path")
+          .collection("$shipments_collection")
           .where("is_delivered", isEqualTo: false)
           .where("is_canceled", isEqualTo: false)
           .where("is_deleted", isEqualTo: false);