Updates!

- Add "last update date" to StockDetail view
- Add 'stocktake date" to StockDetail view

lib/inventree/stock.dart

@@ -1,3 +1,4 @@
+import 'package:intl/intl.dart';
 import 'package:inventree/inventree/part.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:http/http.dart' as http;
@@ -222,20 +223,46 @@ class InvenTreeStockItem extends InvenTreeModel {
   int get trackingItemCount => (jsondata['tracking_items'] ?? 0) as int;
 
   // Date of last update
-  String get updated => jsondata["updated"] ?? "";
-
-  DateTime? get stocktakeDate {
-    if (jsondata.containsKey("stocktake_date")) {
-      if (jsondata["stocktake_date"] == null) {
-        return null;
-      }
-
-      return DateTime.tryParse(jsondata["stocktake_date"]) ?? null;
+  DateTime? get updatedDate {
+    if (jsondata.containsKey("updated")) {
+      return DateTime.tryParse(jsondata["updated"] ?? '');
     } else {
       return null;
     }
   }
 
+  String? get updatedDateString {
+    var _updated = updatedDate;
+
+    if (_updated == null) {
+      return null;
+    }
+
+    final DateFormat _format = DateFormat("yyyy-MM-dd");
+
+    return _format.format(_updated);
+  }
+
+  DateTime? get stocktakeDate {
+    if (jsondata.containsKey("stocktake_date")) {
+      return DateTime.tryParse(jsondata["stocktake_date"] ?? '');
+    } else {
+      return null;
+    }
+  }
+
+  String? get stocktakeDateString {
+    var _stocktake = stocktakeDate;
+
+    if (_stocktake == null) {
+      return null;
+    }
+
+    final DateFormat _format = DateFormat("yyyy-MM-dd");
+
+    return _format.format(_stocktake);
+  }
+
   String get partName {
 
     String nm = '';

lib/widget/stock_detail.dart

@@ -418,7 +418,32 @@ class _StockItemDisplayState extends RefreshableState<StockDetailWidget> {
       );
     }
 
+    // Last update?
+    var update_date = item.updatedDateString;
+
+    if (update_date != null) {
+
+      tiles.add(
+        ListTile(
+          title: Text(L10().lastUpdated),
+          subtitle: Text(update_date),
+          leading: FaIcon(FontAwesomeIcons.calendarAlt)
+        )
+      );
+    }
+
     // Stocktake?
+    var stocktake_date = item.stocktakeDateString;
+
+    if (stocktake_date != null) {
+      tiles.add(
+        ListTile(
+          title: Text(L10().lastStocktake),
+          subtitle: Text(stocktake_date),
+          leading: FaIcon(FontAwesomeIcons.calendarAlt)
+        )
+      );
+    }
 
     // Supplier part?
     // TODO: Display supplier part info page?