我有一个Ext.form.ComboBox,它使用远程JSON存储来列出用户.我使用XTemplate格式化下拉列表中列出的用户：

'<tpl for="."><div class="x-combo-list-item">','{firstname} {lastname} ({email})','</div></tpl>'

当我展开下拉列表时,我看到我的用户列出正确：

约翰史密斯(jsmith@company.com)

约翰福特(jford@company.com)

但是,当我单击用户时,组合框内容将更改为您期望的valueField属性(‘firstname’).

问题：

>而不是展示约翰,我想要显示组合框：John Smith(jsmith@company.com).
>当我有两个John(John Smith和John Ford)并加载表单时,ExtJs逻辑与它在列表中找到的第一个John匹配,并将该字段的值更改为它匹配的第一个John.

例如：
约翰史密斯(ID = 1)
约翰福特(ID = 2)

用户选择John Ford,并且在他们单击组合菜单项后,“John”出现在组合框中,并且user_id = 2被写入数据库.

然而,当我重新加载页面时,名称“John”匹配(从数据库加载)到第一个列表条目,如果运算符没有在下拉对话框中手动更改选择,则选择John Smith并且user_id =现在将1写入数据库(当用户保存表单时).

任何输入都将非常感激.我的直觉告诉我在加载和发布列表单击期间应该有几个钩子,这将允许我操作写入元素的innerHTML元素的内容.

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注意：我继承了一个自定义类,它允许我提前输入查询,名字,姓氏和电子邮件地址(因为我们可能有数百个用户要搜索).

我继承的ComboBox元素：

CW.form.CustomComboBox = Ext.extend( Ext.form.ComboBox,{

filterKeys:[],// Note: This overrides the standard doQuery function in Ext 3.3
doQuery: function(q,forceAll){

    q = Ext.isEmpty(q) ? '' : q;
    var qe = {
        query: q,forceAll: forceAll,combo: this,cancel:false
    };
    if(this.fireEvent('beforequery',qe)===false || qe.cancel){
        return false;
    }
    q = qe.query;
    forceAll = qe.forceAll;
    if(forceAll === true || (q.length >= this.minChars)){
        if(this.lastQuery !== q){
            this.lastQuery = q;
            if(this.mode == 'local'){
                this.selectedIndex = -1;
                if(forceAll){
                    this.store.clearFilter();
                }else{
                    // this.store.filter(this.displayField,q);
                    this.store.filterBy( function(rec,id){
                        return this.filterFn(rec,id,q);
                    },this );
                }
                this.onLoad();
            }else{
                this.store.baseParams[this.queryParam] = q;
                this.store.load({
                    params: this.getParams(q)
                });
                this.expand();
            }
        }else{
            this.selectedIndex = -1;
            this.onLoad();
        }
    }
},/**
 * Custom function for filtering the store
 */
filterFn: function(rec,q ){

    // var filterKeys = ['id','firstname','lastname','email'];
    var parts = q.split(' ');

    // If no filter applied then show no results
    if(parts.length == 0){
        return false;
    }

    // Iterate through each of the parts of the user string
    // They must all match,at least in part,one of the filterKeys
    // (i.e. id,email,firstname,etc.)
    for(i=0; i<parts.length;i++){
        var foundPart = false;

        // Create a RegExp object for this search snippet (i.e. '@gmai')
        var matcher = this.store.data.createValueMatcher(parts[i],true);

        // Search until this matches one of the keys for this record
        for(j=0;j<this.filterKeys.length; j++){
            if(matcher.test(rec.get(this.filterKeys[j]))){
                foundPart = true;
                break;
            }
        }

        // If there are no fields of the record matching this part,// the record does not match (return false)
        if( foundPart == false ){
            return false;
        }
    }
    return true;

},initComponent: function(){

    Ext.applyIf(this,{
        listeners:{
            beforequery: function(qe){
                    delete qe.combo.lastQuery;
                    return true;
                }          
            }
    });

    if(this.filterKeys.length == 0){
        this.filterKeys = [this.displayField];
    }

    CW.form.CustomComboBox.superclass.initComponent.call(this);


}
});
Ext.reg('custom-combo',CW.form.CustomComboBox);