GetX Controller Template

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import 'package:get/get.dart';
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class ProductController extends GetxController {
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  // Reactive state
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  final products = <Product>[].obs;
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  final isLoading = false.obs;
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  final error = ''.obs;
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  final selectedProduct = Rxn<Product>();
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  // Dependencies
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  late final ProductRepository _repository;
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  @override
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  void onInit() {
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    super.onInit();
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    _repository = Get.find<ProductRepository>();
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    fetchProducts();
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  }
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  @override
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  void onClose() {
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    // Cleanup subscriptions, timers etc.
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    super.onClose();
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  }
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  Future<void> fetchProducts() async {
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    isLoading.value = true;
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    error.value = '';
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    try {
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      products.value = await _repository.getProducts();
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    } catch (e) {
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      error.value = e.toString();
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    } finally {
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      isLoading.value = false;
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    }
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  }
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  void selectProduct(Product product) {
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    selectedProduct.value = product;
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  }
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  void clearSelection() => selectedProduct.value = null;
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}
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// Usage in widget
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class ProductsPage extends GetView<ProductController> {
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  const ProductsPage({super.key});
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  @override
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  Widget build(BuildContext context) {
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    return Scaffold(
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      body: Obx(() {
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        if (controller.isLoading.value) return const Center(child: CircularProgressIndicator());
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        if (controller.error.value.isNotEmpty) return Center(child: Text(controller.error.value));
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        return ListView.builder(
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          itemCount: controller.products.length,
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          itemBuilder: (_, i) => ListTile(title: Text(controller.products[i].name)),
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        );
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      }),
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    );
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  }
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}