禁用：'{readOnly}'是什么意思ExtJs

Question

I'm working on a project in ExtJS started by my colleagues. I found an item of a fieldset which is like this:

{
    xtype: 'radiofield',
    name: 'something',
    value: something,
    label: something,
    checked: something,
    bind: {
        disabled: '{readOnly}'
    }
}

What is disabled: '{readOnly}' ? According to documentation, disabled: should be a boolean, so disabled: '{readOnly}' what is supposed to be?

Answer 1

Disabled and ReadOnly tags are very similar but have some noticeable differences. The " Disabled " tag is used to ensure the user cannot trigger or alter the field and Field isn't sent when submit is clicked . Whereas readOnly submits the field on submit. In this case, since readOnly is used alongside disabled , the functionality remains the same ie user can't trigger the field and it is not submitted so it is equivalent to:

 disabled: true