Searching through List<HashMap<String, dynamic>> and return if it contains value flutter - flutter

Question

Below is how i am fetching my data
static Future<List<Item>> fetchItems(String query) async {
try {
final response = await http.get(
Uri.parse(
"https://api.json-generator.com/templates/ueOoUwh5r44G/data"),
headers: {
"Content-Type": "application/json",
"Authorization": "Bearer tltsp6dmnbif01jy9xfo9ssn4620u89xhuwcm5t3",
}) /*.timeout(const Duration(seconds: Config.responseTimeOutInSeconds))*/;
final List<Item> itemsList;
if (response.statusCode == 200) {
itemsList = json
.decode(response.body)
.map<Item>((json) => Item.fromJson(json))
.where((item) {
final idLower = item.id.toLowerCase();
final titleLower = item.title.toLowerCase();
final subTitleLower = item.subTitle.toLowerCase();
final searchLower = query.toLowerCase();
return idLower.contains(searchLower) ||
titleLower.contains(searchLower) ||
subTitleLower.contains(searchLower);
}).toList();
} else if (response.statusCode == 401) {
itemsList = [];
} else {
itemsList = [];
}
return itemsList;
} catch (e) {
if (kDebugMode) {
Logger().wtf(
"FetchItemsException $e \n\nResponseStatusCode ${statusCode!}");
}
rethrow;
}
}
The above code is when i am using a class of Item. The issues that i am having is i have switched to load and populate the data using List<HashMap<String, dynamic>> instead of Item class
The code above is working fine if i am using List but fails when i am using List<HashMap<String, dynamic>>
I am going to highlight the section that is failing. Below is how i was checking if the following variables idLower, titleLower, subTitleLower contains what is in the search query and return the Item. Below is the code of how i was doing that
if (response.statusCode == 200) {
itemsList = json
.decode(response.body)
.map<Item>((json) => Item.fromJson(json))
.where((item) {
final idLower = item.id.toLowerCase();
final titleLower = item.title.toLowerCase();
final subTitleLower = item.subTitle.toLowerCase();
final searchLower = query.toLowerCase();
return idLower.contains(searchLower) ||
titleLower.contains(searchLower) ||
subTitleLower.contains(searchLower);
}).toList();
}
Below is how i am fetching using List<HashMap<String, dynamic>>
static Future<List<HashMap<String, dynamic>>> fetchLists(
String url, String query) async {
try {
final response = await http.get(Uri.parse(url), headers: {
"Content-Type": "application/json",
"Authorization": "Bearer tltsp6dmnbif01jy9xfo9ssn4620u89xhuwcm5t3",
}).timeout(const Duration(seconds: Config.responseTimeOutInSeconds));
statusCode = response.statusCode;
final List<HashMap<String, dynamic>> responseList;
if (response.statusCode == 200) {
responseList = json
.decode(response.body)
.map<HashMap<String, dynamic>>(
(e) => HashMap<String, dynamic>.from(e))
.where((mapItem) {
final idLower = mapItem["id"].toLowerCase();
final titleLower = mapItem["title"].toLowerCase();
final subTitleLower = mapItem["subTitle"].subTitle.toLowerCase();
final searchLower = query.toLowerCase();
return idLower.contains(searchLower) ||
titleLower.contains(searchLower) ||
subTitleLower.contains(searchLower);
}).toList();
} else if (response.statusCode == 401) {
responseList = [];
} else {
responseList = [];
}
return responseList;
} catch (e) {
if (kDebugMode) {
Logger().wtf(
"FetchUsersUsingListOfStringObjectHashMapException $e \n\nResponseStatusCode ${statusCode!}");
}
rethrow;
}
}
And below is how i have tried to check if the items in the HashMap is contained in the query but its not working
if (response.statusCode == 200) {
responseList = json
.decode(response.body)
.map<HashMap<String, dynamic>>(
(e) => HashMap<String, dynamic>.from(e))
.where((mapItem) {
final idLower = mapItem["id"].toLowerCase();
final titleLower = mapItem["title"].toLowerCase();
final subTitleLower = mapItem["subTitle"].subTitle.toLowerCase();
final searchLower = query.toLowerCase();
return idLower.contains(searchLower) ||
titleLower.contains(searchLower) ||
subTitleLower.contains(searchLower);
}).toList();
}