Display and edit project code for purchase orders

lib/api_form.dart

@@ -15,6 +15,7 @@ import "package:inventree/l10.dart";
 
 import "package:inventree/inventree/company.dart";
 import "package:inventree/inventree/part.dart";
+import "package:inventree/inventree/project_code.dart";
 import "package:inventree/inventree/sentry.dart";
 import "package:inventree/inventree/stock.dart";
 
@@ -667,6 +668,13 @@ class APIFormField {
             height: 40
           )
         );
+      case "projectcode":
+        var project_code = InvenTreeProjectCode.fromJson(data);
+        return ListTile(
+          title: Text(project_code.code),
+          subtitle: Text(project_code.description),
+          leading: FaIcon(FontAwesomeIcons.list)
+        );
       default:
         return ListTile(
           title: Text(

lib/inventree/part.dart

@@ -335,7 +335,7 @@ class InvenTreePart extends InvenTreeModel {
     double get building => getDouble("building");
 
     // Get the number of BOMs this Part is used in (if it is a component)
-    int get usedInCount => getInt("used_in");
+    int get usedInCount => jsondata.containsKey("used_in") ? getInt("used_in", backup: 0) : 0;
 
     bool get isAssembly => getBool("assembly");
 

lib/inventree/project_code.dart

@@ -23,4 +23,6 @@ class InvenTreeProjectCode extends InvenTreeModel {
       "description": {},
     };
   }
+
+  String get code => getString("code");
 }

lib/inventree/purchase_order.dart

@@ -34,6 +34,7 @@ class InvenTreePurchaseOrder extends InvenTreeModel {
       },
       "supplier_reference": {},
       "description": {},
+      "project_code": {},
       "target_date": {},
       "link": {},
       "responsible": {},
@@ -77,6 +78,15 @@ class InvenTreePurchaseOrder extends InvenTreeModel {
 
   int get supplierId => getInt("supplier");
 
+  // Project code information
+  int get projectCodeId => getInt("project_code");
+
+  String get projectCode => getString("code", subKey: "project_code_detail");
+
+  String get projectCodeDescription => getString("description", subKey: "project_code_detail");
+
+  bool get hasProjectCode => projectCode.isNotEmpty;
+
   InvenTreeCompany? get supplier {
 
     dynamic supplier_detail = jsondata["supplier_detail"];

lib/l10n/app_en.arb

@@ -759,6 +759,9 @@
   "profileTapToCreate": "Tap to create or select a profile",
   "@profileTapToCreate": {},
 
+  "projectCode": "Project Code",
+  "@projectCode": {},
+
   "purchaseOrder": "Purchase Order",
   "@purchaseOrder": {},
 

lib/widget/purchase_order_detail.dart

@@ -43,6 +43,8 @@ class _PurchaseOrderDetailState extends RefreshableState<PurchaseOrderDetailWidg
 
   int attachmentCount = 0;
 
+  bool supportProjectCodes = false;
+
   @override
   String getAppBarTitle() => L10().purchaseOrder;
 
@@ -139,6 +141,8 @@ class _PurchaseOrderDetailState extends RefreshableState<PurchaseOrderDetailWidg
 
     lines = await order.getLineItems();
 
+    supportProjectCodes = api.supportsProjectCodes && await api.getGlobalBooleanSetting("PROJECT_CODES_ENABLED");
+
     completedLines = 0;
 
     for (var line in lines) {
@@ -157,12 +161,20 @@ class _PurchaseOrderDetailState extends RefreshableState<PurchaseOrderDetailWidg
   // Edit the currently displayed PurchaseOrder
   Future <void> editOrder(BuildContext context) async {
     var fields = order.formFields();
+
+    // Cannot edit supplier field from here
     fields.remove("supplier");
 
+    // Contact model not supported by server
     if (!api.supportsContactModel) {
       fields.remove("contact");
     }
 
+    // ProjectCode model not supported by server
+    if (!supportProjectCodes) {
+      fields.remove("project_code");
+    }
+
     order.editForm(
       context,
       L10().purchaseOrderEdit,
@@ -202,6 +214,14 @@ class _PurchaseOrderDetailState extends RefreshableState<PurchaseOrderDetailWidg
 
     tiles.add(headerTile(context));
 
+    if (supportProjectCodes && order.hasProjectCode) {
+      tiles.add(ListTile(
+        title: Text(L10().projectCode),
+        subtitle: Text("${order.projectCode} - ${order.projectCodeDescription}"),
+        leading: FaIcon(FontAwesomeIcons.list),
+      ));
+    }
+
     if (supplier != null) {
       tiles.add(ListTile(
         title: Text(L10().supplier),