淘汰赛链接的DropDownList ko.observableArray()-选择的插件 [英] Knockout linked DropDownList ko.observableArray() - chosen plugin
问题描述
主要问题是我需要链接两个选择. 当我在第一个选择中选择一个国家时,第二个必须显示所选国家的州.
The main question is that I need to link two select. When I choose one country in the first select the second must display the states of the selected country.
我得到了什么,自定义绑定:
What I got, The custom Binding:
ko.bindingHandlers.chosen = {
init: function(element, valueAccessor, allBindingsAccessor, viewModel) {
$(element).chosen();
},
update: function(element, valueAccessor, allBindingsAccessor, viewModel) {
$(element).trigger("liszt:updated");
}
};
var viewModel = {
Comunidades : ko.observableArray([
{"name": "Comunidad Valenciana" ,
"id" : 0, "provincias":
[{"name" : "Alicante", "id": 0},
{"name": "Valencia", "id" : 1},
{"name": "Castellon", "id" : 2}
] } ,
{"name": "Madrid" , "id" : 1 },
{"name": "Murcia" , "id" : 2 }]
),
]),
selectedOne : ko.observableArray(),
ko.applyBindings(viewModel);
这样,我在HTML选择中显示了第一个数组,但是我不知道如何在第一个选项中显示"Provincias".
With this I display the first array in a HTML select, but I don't know how to display the 'Provincias' inside the first option for example.
我将尝试进行演示.
<link rel="stylesheet" href="http://harvesthq.github.com/chosen/chosen/chosen.css" />
<select data-bind="options: Comunidades , value: selectedOne, chosen : true, optionsText: 'name', optionsValue: 'id' " class="chzn-select" style="width:300px;" ></select>
<select data-bind="options: Comunidades , value: selectedTwo, chosen : true, optionsText: 'name', optionsValue: 'id' " class="chzn-select" style="width:300px;" ></select>
<p data-bind="text: selectedOne"></bind>
<p data-bind="text: selectedTwo"></bind>
http://i.imgur.com/shqlFVp.png?1
推荐答案
http://jsfiddle.net/benfosterdev /wHtRZ/
])
有一个示例启发了我.使用带有Knockout的层叠DropDown List,也对Papa示例很有帮助.
There is the example I inspired in. Using a cascade DropDown List with Knockout, also helped the Papa example.
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