Add recipe existence check in update method and remove redundant quantity conversion

backend/src/recipes/recipes.service.ts

@@ -303,7 +303,16 @@ export class RecipesService {
   }
 
   async update(id: number, updateRecipeDto: CreateRecipeDto) {
-    // Först, ta bort gamla ingredienser
+    // Verifiera att receptet finns
+    const existingRecipe = await this.prisma.recipe.findUnique({
+      where: { id },
+    });
+
+    if (!existingRecipe) {
+      throw new NotFoundException(`Recipe with id ${id} not found`);
+    }
+
+    // Ta bort gamla ingredienser
     await this.prisma.recipeIngredient.deleteMany({
       where: { recipeId: id },
     });
@@ -318,7 +327,7 @@ export class RecipesService {
         ingredients: {
           create: updateRecipeDto.ingredients.map((ingredient) => ({
             productId: ingredient.productId,
-            quantity: ingredient.quantity.toString(),
+            quantity: ingredient.quantity,
             unit: ingredient.unit,
             note: ingredient.note || null,
           })),
@@ -345,7 +354,7 @@ export class RecipesService {
         ingredients: {
           create: createRecipeDto.ingredients.map((ingredient) => ({
             productId: ingredient.productId,
-            quantity: ingredient.quantity.toString(),
+            quantity: ingredient.quantity,
             unit: ingredient.unit,
             note: ingredient.note || null,
           })),