Configurable GET and LIST filters per model type

lib/inventree/model.dart

@@ -74,8 +74,13 @@ class InvenTreeModel {
   }
   */
 
+  Map<String, String> defaultListFilters() { return Map<String, String>(); }
+
+  // A map of "default" headers to use when performing a GET request
+  Map<String, String> defaultGetFilters() { return Map<String, String>(); }
+
   // Return the detail view for the associated pk
-  Future<InvenTreeModel> get(int pk) async {
+  Future<InvenTreeModel> get(int pk, {Map<String, String> filters}) async {
 
     // TODO - Add "timeout"
     // TODO - Add error catching
@@ -86,7 +91,18 @@ class InvenTreeModel {
       addr += "/";
     }
 
-    var response = await InvenTreeAPI().get(addr);
+    var params = defaultGetFilters();
+
+    if (filters != null) {
+      // Override any default values
+      for (String key in filters.keys) {
+        params[key] = filters[key];
+      }
+    }
+
+    print("GET: $addr ${params.toString()}");
+
+    var response = await InvenTreeAPI().get(addr, params: params);
 
     if (response.statusCode != 200) {
       print("Error retrieving data");
@@ -105,12 +121,20 @@ class InvenTreeModel {
       filters = {};
     }
 
-    print("Listing endpoint: $URL");
+    var params = defaultListFilters();
+
+    if (filters != null) {
+      for (String key in filters.keys) {
+        params[key] = filters[key];
+      }
+    }
+
+    print("LIST: $URL ${params.toString()}");
 
     // TODO - Add "timeout"
     // TODO - Add error catching
 
-    var response = await InvenTreeAPI().get(URL, params:filters);
+    var response = await InvenTreeAPI().get(URL, params:params);
 
     // A list of "InvenTreeModel" items
     List<InvenTreeModel> results = new List<InvenTreeModel>();

lib/inventree/part.dart

@@ -12,6 +12,15 @@ class InvenTreePartCategory extends InvenTreeModel {
   @override
   String URL = "part/category/";
 
+  @override
+  Map<String, String> defaultListFilters() {
+    var filters = new Map<String, String>();
+
+    filters["active"] = "true";
+
+    return filters;
+  }
+
   String get pathstring => jsondata['pathstring'] ?? '';
 
   String get parentpathstring {

lib/inventree/stock.dart

@@ -6,6 +6,17 @@ class InvenTreeStockItem extends InvenTreeModel {
   @override
   String URL = "stock/";
 
+  @override
+  Map<String, String> defaultGetFilters() {
+
+    var headers = new Map<String, String>();
+
+    headers["part_detail"] = "true";
+    headers["location_detail"] = "true";
+
+    return headers;
+  }
+
   InvenTreeStockItem() : super();
 
   InvenTreeStockItem.fromJson(Map<String, dynamic> json) : super.fromJson(json) {

lib/widget/part_display.dart

@@ -34,8 +34,7 @@ class _PartDisplayState extends State<PartDisplayWidget> {
    */
   List<Widget> partTiles() {
 
-    List<Widget> tiles = [
+    List<Widget> tiles = [];
-    ];
 
     // Image / name / description
     tiles.add(

lib/widget/stock_display.dart

@@ -33,6 +33,25 @@ class _StockItemDisplayState extends State<StockItemDisplayWidget> {
     }
   }
 
+  /*
+   * Construct a list of detail elements about this StockItem.
+   * The number of elements may vary depending on the StockItem details
+   */
+  List<Widget> stockTiles() {
+    List<Widget> tiles = [];
+
+    // Image / name / description
+    tiles.add(
+      Card(
+        child: ListTile(
+          title: Text("${item.partName}"),
+        )
+      )
+    );
+
+    return tiles;
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(