有的时候comboBox render的时候不好使，你改变了值但是显示还是上一次的值（再次双击才看到改变后的值）

renderGridValueObject : function(value, record, id, name) {

                if (record) {

                    if (this.getValue()) {

                        if (this.getValue() == this.getRawValue()

                                && this.isReset) { // 增加isReset判断 by gaojun

                            this.reset();

                            return value;

                        }

                        record.editing = true;

                        record.set(id, this.getValue());

                        record.set(name, this.getRawValue());

                        record.editing = false;

                        // record.dirty = false;

                        this.reset();

                        return record.get(name);

                    } else {

                        return value;

                    }

                }

            },

 

===========================================================================================

EditorEditFieldRenderer : function(combo,value,record,idField,nameField,code,name){

        // 获得下拉框的数据集

        var storeVal = combo.getStore();

        var displayField = combo.displayField;

        //选择的顺序号

        var index = storeVal.find(code?code:'id', value);

        //通过顺序号得到相应的record对象

        var storeRecord = storeVal.getAt(index);

        var displayText = "";

        if (storeRecord == null) {

            displayText = value;

        } else {

            displayText = storeRecord.get(displayField);

        }

        // 修改record值 by gaojun

        if(record.get(nameField) != undefined && record.get(nameField) != '' && combo.getRawValue() != '') {

            record.editing = true;

            record.set(idField,combo.inputValue || combo.getValue());

            record.set(nameField,combo.getRawValue());

            record.editing = false;

            record.dirty = false;

            combo.reset();

        }

        combo = null;

        return displayText;

},

我在项目中一般重写renderer方法 即上面第一种方法可以解决上面问题