详细描述在此
http://blog.csdn.net/aaoxue/article/details/8556202

两个combobox的store的数据都在前台写好，思路是，第一个combobox选值后就对第二个store根据条件进行过滤，将第二个combobox展开，问题是，直接展开没有问题，当我再点击第二个组件的下拉框时，展开的没有过滤之前store的数据。如何解决？

	

//性别store

	var sexStore = Ext.create('Ext.data.Store', {

	    fields: ['code', 'name'],

	    data : [

	        {"code":"0", "name":"female"},

	        {"code":"1", "name":"male"}

	    ]

    });

    //所有人Store

   var people = Ext.create('Ext.data.Store', {

    fields: ['code','sexcode', 'name'],

    data : [

        {"code":"0", "sexcode":"0", "name":"li"},

        {"code":"1","sexcode":"0", "name":"zhang"},

        {"code":"2","sexcode":"1", "name":"sun"},

    ]

    });

    //combobox显示指定性别store

    var peopleChoose = Ext.create('Ext.data.Store', {

          fields: ['code','sexcode', 'name']

    });

    // 选择性别 combobox

Ext.create('Ext.form.ComboBox', {

    fieldLabel: 'Choose Sex',

    store: sexStore,

    id:'combo.ChooseSex',

    queryMode: 'local',

    displayField: 'name',

    valueField: 'code',

    renderTo: Ext.getBody(),

    listeners:{

	    'change':function(thisField,newValue,oldValue,epots){

		    if(newValue!=null){

			        Ext.getCmp('combo.ChoosePeople').setDisabled(false);

			           people.filterBy(function(record){

				        return record.get('sexcode')==newValue;

				        });

				        Ext.getCmp('combo.ChoosePeople').expand();

				        //使用peopleStore时

//			        peopleChoose.removeAll();

//			        people.each(function(record){

//				        //过滤通过性别选择符合的人员数据

//				       if(record.get('sexcode')==newValue){

//					       peopleChoose.add(record);

//					       }

//				       });

			  }else{

				  Ext.getCmp('combo.ChoosePeople').setDisabled(true);

				  }

		    }

	    }

});



Ext.create('Ext.form.ComboBox', {

    fieldLabel: 'Choose People',

    //store: peopleChoose,

    store:people,

    disabled:true,

    id:'combo.ChoosePeople',

    queryMode: 'local',

    displayField: 'name',

    valueField: 'code',

    autoSelect:false,

    renderTo: Ext.getBody()

    });