ext checkboxgroup 回填数据解决

 重写

//解决checkboxgroup回填数据问题
    Ext.override(Ext.form.BasicForm,{
   findField : function(id){           
         var field = this.items.get(id);           
         if(!field){   
            this.items.each(function(f){   
                if(f.isXType('radiogroup')||f.isXType('checkboxgroup')){   
                    f.items.each(function(c){   
                        if(c.isFormField && (c.dataIndex == id || c.id == id || c.getName() == id)){   
                            field = c;   
                            return false;   
                        }   
                    });   
                }   
                                   
                if(f.isFormField && (f.dataIndex == id || f.id == id || f.getName() == id)){   
                    field = f;   
                    return false;   
                }   
            });   
        }   
        return field || null;   
    }     
   
});