corregido error en lista de la compra cuando no se han guardado ninguna receta

fuel/app/classes/controller/listacompra/index.php

@@ -48,7 +48,7 @@ class Controller_Listacompra_Index extends \Controller_App{
 	    	$recipe_ids[] = $recipe->id;
 	    }
 
-	    $view->ingredients = Model_Ingredient::get_ingredients_week($recipe_ids);
+	    $view->ingredients = count($recipe_ids)>0 ? Model_Ingredient::get_ingredients_week($recipe_ids) : array();
 
         //Titulo de la vista
         $view->title = "Lista de la Compra";

fuel/app/classes/model/recipe.php

@@ -59,9 +59,11 @@ class Model_Recipe extends Model{
 
 			$recipe = $this->ws_recipe_get($this->recipe_id);
 
+			if(!$recipe)
+				return array();
+
 			foreach ($recipe->ingredients as $ingredientRecipe)
 	        {
-
 	            $ingredient = Model_Ingredient::forge();
 
 	            $ingredient->ingredient_id = $ingredientRecipe->id;
@@ -73,7 +75,6 @@ class Model_Recipe extends Model{
 		        $ingredient->created_at    = date("Y-m-d H:i:s");
 
 		        $this->ingredients[]       =  $ingredient;
-
 	        }
 
 	        $this->loaded = 'S';