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miso-soup/City クラス

Last active Dec 19, 2015
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ASP.NET MVC で動的なドロップダウンリストを実装する http://miso-soup3.hateblo.jp/entry/2013/07/18/141908 で使用したコードです
public class City
{
public int Id { get; set; }
public string Name { get; set; }
}
public class CreateAddressModel
{
public int? StateId { get; set; }
public int? CityId { get; set; }
public SelectList StateSelectList { get; set; }
}
public class State
{
public int Id { get; set; }
public String Name { get; set; }
public IEnumerable<City> Cities { get; set; }
/// <summary>
/// 県のスタブリストを作成して返します。
/// </summary>
/// <returns></returns>
public static IEnumerable<State> CreateDefaultsState()
{
return new List<State>()
{
new State() { Id = 1, Name = "石川県" , Cities = new List<City>()
{
new City() { Id = 1, Name = "金沢市" },
new City() { Id = 1, Name = "七尾市" },
new City() { Id = 1, Name = "小松市" },
new City() { Id = 1, Name = "輪島市" },
}},
new State() { Id = 2, Name = "福井県" , Cities = new List<City>()
{
new City() { Id = 1, Name = "福井市" },
new City() { Id = 1, Name = "敦賀市" },
new City() { Id = 1, Name = "小浜市" },
new City() { Id = 1, Name = "大野市" },
}},
new State() { Id = 3, Name = "富山県" , Cities = new List<City>()
{
new City() { Id = 1, Name = "富山市" },
new City() { Id = 1, Name = "高岡市" },
new City() { Id = 1, Name = "魚津市" },
new City() { Id = 1, Name = "氷見市" },
}},
};
}
}
@model DynamicSelectList.Models.CreateAddressModel
@Html.LabelFor(m => m.StateId, "県")
<select
data-bind="options: states, optionsText: 'Text', optionsValue: 'Value', value: selectedState,
optionsCaption: '県を選択して下さい。'">
</select>
@Html.LabelFor(m => m.CityId, "市町村")
<select
data-bind="options: cities, optionsText: 'Text', optionsValue: 'Value', value: selectedCitity,
optionsCaption: '市町村を選択して下さい。', enable: cities().length !== 0">
</select>
<script src="~/Scripts/knockout-2.3.0.js"></script>
<script type="text/javascript">
$(function() {
var createAddressViewModel = {
states: ko.observableArray([]),
cities: ko.observableArray([]),
selectedState: ko.observable(),
selectedCitity: ko.observable(),
setStates: function () {
//都道府県のセレクトリストのソースを設定します
$.ajax({
type: 'GET',
url: '/api/states',
dataType: 'json',
cache: false,
success: function (data) {
createAddressViewModel.states(data);
}
});
}
};
createAddressViewModel.selectedState.subscribe(function (selectedStateId) {
//都道府県が変更された時
if (!selectedStateId) {
createAddressViewModel.cities([]);
}
$.ajax({
type: 'GET',
//url: '/api/cities',
url: '/api/cities',
data: { stateId: selectedStateId },
dataType: 'json',
cache: false,
success: function (data) {
createAddressViewModel.cities(data);
createAddressViewModel.selectedCitity('');
}
});
});
ko.applyBindings(createAddressViewModel);
createAddressViewModel.setStates();
});
</script>
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