fetchPosts method
Implementation
Future<List<Post>> fetchPosts() async {
final response = await http.get(Uri.parse(apiUrl));
if (response.statusCode == 200) {
final List<dynamic> jsonData = jsonDecode(response.body);
return jsonData.map((item) => Post.fromJson(item)).toList();
} else {
throw Exception('Failed to fetch posts');
}
}