up

src/modules/foods/providers/category.service.ts

@@ -31,13 +31,35 @@ export class CategoryService {
     const where: FilterQuery<Category> = {};
     if (opts?.restId) where.restId = opts.restId;
     if (opts && typeof opts.isActive === 'boolean') where.isActive = opts.isActive;
-    return this.categoryRepository.find(where, { populate: ['foods'] });
+    const cats = await this.categoryRepository.find(where, { populate: ['foods'] });
+
+    // Return plain objects to avoid circular references during JSON serialization
+    return cats.map(cat => ({
+      id: cat.id,
+      title: cat.title,
+      isActive: cat.isActive,
+      restId: cat.restId,
+      avatarUrl: cat.avatarUrl,
+      createdAt: cat.createdAt,
+      updatedAt: cat.updatedAt,
+      foods: cat.foods.getItems().map(f => ({ id: f.id, title: f.title })),
+    })) as unknown as Category[];
   }
 
   async findOne(id: string): Promise<Category> {
     const cat = await this.categoryRepository.findOne({ id }, { populate: ['foods'] });
     if (!cat) throw new NotFoundException(CategoryMessage.NOT_FOUND);
-    return cat;
+
+    return {
+      id: cat.id,
+      title: cat.title,
+      isActive: cat.isActive,
+      restId: cat.restId,
+      avatarUrl: cat.avatarUrl,
+      createdAt: cat.createdAt,
+      updatedAt: cat.updatedAt,
+      foods: cat.foods.getItems().map(f => ({ id: f.id, title: f.title })),
+    } as unknown as Category;
   }
 
   async update(id: string, dto: UpdateCategoryDto): Promise<Category> {