Question

我是flutter框架的新手，我对dropdownbutton有一些问题。如何将所选的下拉按钮保存到mysql数据库中

此代码实际上可以保存到mysqldb中作为文本字段。但是如何获取所选的dropdownbutton值

signed int

插入数据库代码：

function wpd_date_404_template( $template = '' ){
    global $wp_query;
    if(
        isset($wp_query->query['year']) ||
        isset($wp_query->query['monthnum']) ||
        isset($wp_query->query['day'])
    ) {
        $template = locate_template( 'archive.php', false );

        if ( isset( $wp_query->query['post_type'] ) ) {
            $located = locate_template( 'archive-' . $wp_query->query['post_type'] . '.php', false );
            $template = $located !== '' ? $located : locate_template( 'archive.php', false );
        }
    }
    return $template;
}
add_filter( '404_template', 'wpd_date_404_template' );

显示下拉按钮值的代码

    class FormOrtuView extends StatefulWidget {
  @override
  _FormOrtuViewState createState() => _FormOrtuViewState();
}

class _FormOrtuViewState extends State<FormOrtuView> {
  String _dropdownValueAgm = 'Katolik';

  final _key = new GlobalKey<FormState>();

返回代码以显示ui

sumbit(String namaAyah,agamaAyah) async {
    var ayah = {
      "id_register": idReg,
      "nama_ayah": namaAyah,
      "agama_ayah": agamaAyah,
    };
    final response = await http.post(BaseUrl.ayah, body: {
      'id_register': ayah['id_register'],
      'nama_ayah': ayah['nama_ayah'],
      'agama_ayah': ayah['agama_ayah'],
    });
    print(response.statusCode);
    final data = jsonDecode(response.body);
    print(data);
  }

下拉按钮代码

DropdownButton<String> _buildDropdownButtonAgama() {
    return DropdownButton<String>(
      value: _dropdownValueAgm,
      onChanged: (String agamaAyah) {
        setState(() {
          _dropdownValueAgm = agamaAyah;
        });
      },
      items: <String>[
        'Katolik',
        'Kristen',
        'Islam',
        'Hindu',
        'Buddha',
        'Kong Hu Chu',
        'Kepercayaan'
      ].map<DropdownMenuItem<String>>((String value) {
        return DropdownMenuItem<String>(
          value: value,
          child: Text(value),
        );
      }).toList(),
    );
 }

Answer 1

我认为您可以在提交数学方法时尝试以下代码：-

sumbit(String namaAyah,agamaAyah) async {
    var ayah = {
      "id_register": idReg,
      "nama_ayah": namaAyah,
      "agama_ayah": _dropdownValueAgm, //here i have change.
    };
    final response = await http.post(BaseUrl.ayah, body: {
      'id_register': ayah['id_register'],
      'nama_ayah': ayah['nama_ayah'],
      'agama_ayah': ayah['agama_ayah'],
    });
    print(response.statusCode);
    final data = jsonDecode(response.body);
    print(data);
  }

如何使用flutter将dropdownbutton值插入数据库MySQL

1 个答案: