我建議我們兩個的增量部分這方面的工作:
- 獲取第一
FilteringSelect
的onChange
事件工作
- 線起來使用服務器數據存儲
下面的代碼樣本採用了Dojo校區的「codependent FilteringSelect」示例並將其簡化爲使其數據存儲位於本地。它顯示瞭如何以編程方式實例化兩個FilteringSelects
,第二個依賴於第一個onChange
事件處理程序。
你可以請嘗試運行它,讓我知道如果你得到它的工作?
當我們第一次觸發第一個FilteringSelect
過濾時,我將編輯以添加關於如何將其轉換爲使用服務器端數據存儲的解釋。
xmlns:springform="http://www.springframework.org/tags/form"
樣品形式:
<springform:form action="#" >
<label for="country">Country:</label>
<springform:select id="country" path="country" items="${countryList}" itemLabel="country" itemValue="id"/>
<div id="citySelectDiv"></div>
</springform:form>
JavaScript代碼:
<script type="text/javascript">
<![CDATA[
dojo.require("dojo.parser");
dojo.require("dojo.data.ItemFileReadStore");
function countryChanged(dataFromServer){
//convert json to dojo filteringSelect options
var options = {
identifier: 'id',
label: 'city',
items: dataFromServer
};
var cityStore =new dojo.data.ItemFileReadStore({data : options});
// create Select widget, populating its options from the store
if (!dijit.byId("citySelectDiv")) {
//create city selction combo
new dijit.form.FilteringSelect({
name: "citySelectDiv",
store: cityStore,
searchAttr : "city",
}, "citySelectDiv");
}else{
//if already created the combo before
dijit.byId('citySelectDiv').set('value',null);
dijit.byId('citySelectDiv').store = cityStore;
}
}
Spring.addDecoration(new Spring.ElementDecoration({
elementId : "country",
widgetType : "dijit.form.FilteringSelect",
widgetAttrs : {
promptMessage: "Select a Country",
required : true,
onChange : function(){
var xhrArgs = {
url: "ajax/country/" +dijit.byId('country').get('value'),
handleAs: 'json',
load: function(dataFromServer) {
countryChanged(dataFromServer);
}
};
//make the ajax call
dojo.xhrGet(xhrArgs);
}
}
}));
樣品控制器方法:
<html>
<head>
<title>Test File</title>
<link type="text/css" rel="stylesheet" href="dijit/themes/tundra/tundra.css"/>
</head>
<body class="tundra">
<label for="state">State:</label>
<input id="state">
<label for="city">City:</label>
<input id="city">
<script type="text/javascript" src="dojo/dojo.js"
djConfig="isDebug: true, parseOnLoad: true"></script>
<script type="text/javascript">
dojo.require("dijit.form.FilteringSelect");
dojo.require("dojo.data.ItemFileReadStore");
dojo.addOnLoad(function() {
var cityJson = {
label: 'name',
items: [{ name: 'Albany', state: 'NY' },
{ name: 'New York City', state: 'NY' },
{ name: 'Buffalo', state: 'NY' },
{ name: 'Austin', state: 'TX' },
{ name: 'Houston', state: 'TX' }]
};
var stateJson = {
identifier: 'abbreviation',
label: 'name',
items: [ { name: 'New York', abbreviation: 'NY' },
{ name: 'Texas', abbreviation: 'TX' } ]
};
new dijit.form.ComboBox({
store: new dojo.data.ItemFileReadStore({
data: cityJson
}),
autoComplete: true,
query: {
state: "*"
},
style: "width: 150px;",
required: true,
id: "city",
onChange: function(city) {
dijit.byId('state').attr('value', (dijit.byId('city').item || {
state: ''
}).state);
}
},
"city");
new dijit.form.FilteringSelect({
store: new dojo.data.ItemFileReadStore({
data: stateJson
}),
autoComplete: true,
style: "width: 150px;",
id: "state",
onChange: function(state) {
dijit.byId('city').query.state = state || "*";
}
},
"state");
});
</script>
</body>
</html>