recipes can be added to db from createpage

lib/services/providers/db/dbhelper.dart

@@ -30,4 +30,6 @@ class DbHelper {
   static bool deleteRecipe(Recipe recipe) {
     return _isar.write((isar) => isar.recipes.delete(recipe.id));
   }
+
+  static Stream<void> get recipesChangedStream => _isar.recipes.watchLazy();
 }

lib/services/providers/recipe_list_provider.dart

@@ -4,6 +4,11 @@ import 'package:rezepte/services/providers/db/dbhelper.dart';
 import '../../models/recipe.dart';
 
 class RecipeListProvider extends ChangeNotifier {
+  RecipeListProvider() {
+    DbHelper.recipesChangedStream.listen((event) {
+      notifyListeners();
+    });
+  }
   // final List<Recipe> _recipes = [];
 
   // set recipes(List<Recipe> recipes) {
@@ -20,8 +25,7 @@ class RecipeListProvider extends ChangeNotifier {
   //   if (!silent) notifyListeners();
   // }
 
-  void addRecipe(Recipe recipe, {silent = false}) {
+  void addRecipe(Recipe recipe) {
     DbHelper.putRecipe(recipe);
-    if (!silent) notifyListeners();
   }
 }

lib/services/providers/recipe_provider.dart

@@ -5,9 +5,9 @@ import '../../models/recipe.dart';
 class RecipeProvider extends ChangeNotifier {
   Recipe? _recipe;
 
-  Recipe get recipe => _recipe ??= Recipe(id: 0, title: '');
+  Recipe? get recipe => _recipe;
 
-  set recipe(Recipe recipe) {
+  set recipe(Recipe? recipe) {
     _recipe = recipe;
     notifyListeners();
   }