feat:增加菜谱后端接口

lib/utils/index.dart

@@ -14,4 +14,12 @@ String formatDateTime(DateTime dateTime, [String format = 'yyyy-MM-dd']) {
   final DateFormat formatter = DateFormat(format);
   // return formatter.format(dateTime);
   return Intl.withLocale('zh_CN', () => formatter.format(dateTime));
+}
+
+/// 通用列表转换函数
+List<T> convertListResponse<T>(dynamic data, T Function(Map<String, dynamic>) fromJson) {
+  if (data is List) {
+    return data.map((item) => fromJson(item as Map<String, dynamic>)).toList();
+  }
+  throw FormatException('Expected a list of items for conversion, but got ${data.runtimeType}');
 }