如何删除Ext JS文本字段显示的值？

Question

I've defined a Text field class for specialised usage and inherit a new class through the base one. The problem textfield keeps display value on it's own display field. Click the link please:

Here is some snippets. Could anyone explain the situation?

Base Class :

Ext.define('---.---.base.OoTextFld',{
    extend: 'Ext.form.field.Text',
    xtype: 'ootextfld',
    grow: true,
    flex: 1,
    labelAlign:'right'
});

Inherited one which is used on Form:

Ext.define('---.---.base.InheritedFld',{
    extend:'---.----.base.OoTextFld',
    xtype:'inheritedfld',

    requires: [],

    name:---.---.inherited,
    fieldLabel: ---.inherited,
    afterLabelTextTpl: ---.Globals.required,
    bind: '{currRec.inherited}',
    grow: false
});

Answer 1

似乎该字段绑定到一个整数模型字段，因此当创建一个没有为此字段指定值的记录时，它会自动获得0作为值。