I wrote a model like this:

List<School> schools = [
  School(city: "ISTANBUL", name: "Exam1"),
  School(city: "ISTANBUL", name: "Name2"),
  School(city: "ISTANBUL", name: "Name3")
];

List allSchools() {
  return schools;
}

class School {
  String city;
  String name;
  School({required this.city, required this.name});
}

I want to be able to use city and name values ​​in the list in Flutter.

Flutter codes:

  TextFieldSearch(
    decoration: InputDecoration(
      hintText: "Select School",
      prefixIcon: const Icon(
        Icons.search,
        color: Colors.black45,
      ),
      border: OutlineInputBorder(
        borderRadius: BorderRadius.circular(8.0),
        borderSide: BorderSide.none,
      ),
      filled: true,
      fillColor: const Color.fromARGB(255, 229, 229, 229),
    ),
    initialList: allSchools(),
    label: "",
    controller: _schoolController,
  ),

How can I use model and list together? I hope you understand my point. Thanks in advance for your help.

Error

CodePudding user response：

The package you used only support one string, there is a workaround for that which is convert your schools list to a newlist like this:

List<String> newList = schools.map((e) => '${e.city}-${e.name}').toList();

and use this list to build your TextFieldSearch.

For cleaner code you can separate this widget like this:

Widget buildSearchField(List<School> schools) {
    List<String> newList = schools.map((e) => '${e.city}-${e.name}').toList();

    return TextFieldSearch(
      decoration: InputDecoration(
        hintText: "Select School",
        prefixIcon: const Icon(
          Icons.search,
          color: Colors.black45,
        ),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(8.0),
          borderSide: BorderSide.none,
        ),
        filled: true,
        fillColor: const Color.fromARGB(255, 229, 229, 229),
      ),
      initialList: newList,
      label: "",
      controller: _schoolController,
    );
  }

and use it like this:

buildSearchField(allSchools()),