我正在使用ExtJS 3.4,我需要使用以下数据填充组合框:
"[{"cod_domini":"1","nom_domini":"Sant Esteve de Palautordera"},{"cod_domini":"2","nom_domini":"Parc Natural del Montseny"},{"cod_domini":"5","nom_domini":"Sant Pere de Vilamajor"},{"cod_domini":"6","nom_domini":"Santa Maria i Mosqueroles"}]"
来自之前的XMLHttpRequest,我将它存储在变量中:
my_variable = "[{"cod_domini":"1","nom_domini":"Sant Esteve de Palautordera"},{"cod_domini":"2","nom_domini":"Parc Natural del Montseny"},{"cod_domini":"5","nom_domini":"Sant Pere de Vilamajor"},{"cod_domini":"6","nom_domini":"Santa Maria i Mosqueroles"}]"
所以,我有以下ExtJS 3.4组合框:
cbxSelDomini = new Ext.form.ComboBox({
hiddenName: 'Domini',
name: 'nom_domini',
displayField: 'nom_domini',
valueField: 'cod_domini',
mode: 'local',
triggerAction: 'all',
listClass: 'comboalign',
typeAhead: true,
forceSelection: true,
selectOnFocus: true,
store: mystore
});
这个组合框用于从名为“mystore”的Ext.data.Store获取数据:
store: mystore = new Ext.data.Store({
autoload: true,
reader: new Ext.data.ArrayReader(
{
idIndex: 0 // id for each record will be the first element
}),
data: dataprova,
fields: [
{type: 'integer', name: 'cod_domini'},
{type: 'string', name: 'nom_domini'}
]
}),
我的第一个问题是,在第一个实例中,数据未加载到dataStore,甚至明确告知:mystore.loadData(my_variable);
有人可以试着告诉我我做错了什么吗?在fireBug中,我得到的错误有“this.data未定义”,“this.reader未定义”,或“b未定义”和“h未定义”。
当我将数据格式更改为javascript数组时会出现同样的错误:
var dataexample = [[1, 'Sant Esteve de Palautordera'], [2, 'Parc Natural del Montseny']];
并在商店“data”属性上调用dataexample。
我绝对迷失了......
答案 0 :(得分:7)
变量my_variable
中的数据采用JSON格式,因此应使用JsonReader
。要使用该阅读器,您只需JsonStore
即可使用。示例:
var data = '[{"cod_domini":"1","nom_domini":"Sant Esteve de Palautordera"},{"cod_domini":"2","nom_domini":"Parc Natural del Montseny"},{"cod_domini":"5","nom_domini":"Sant Pere de Vilamajor"},{"cod_domini":"6","nom_domini":"Santa Maria i Mosqueroles"}]';
var mystore = new Ext.data.JsonStore({
//autoload: true,
fields: [
{type: 'integer', name: 'cod_domini'},
{type: 'string', name: 'nom_domini'}
]
});
mystore.loadData(Ext.decode(data)); // decode data, because it is in encoded in string
var cbxSelDomini = new Ext.form.ComboBox({
hiddenName: 'Domini',
name: 'nom_domini',
displayField: 'nom_domini',
valueField: 'cod_domini',
mode: 'local',
triggerAction: 'all',
listClass: 'comboalign',
typeAhead: true,
forceSelection: true,
selectOnFocus: true,
store: mystore
});