在XForms 中，如何将所有字段设为只读，少数字段除外? [英] In XForms, how to make all the fields readonly, except few fields?

问题描述

我使用 使整个实例只读:

<xforms:instance>
    <form>
        ...
    </form>
</xforms:instance>
<xforms:bind ref="instance('form-name')" readonly="true()"/>

但我要求只启用几个字段.我尝试了这样一个为 多个绑定在给定节点，但用于属性必需".所以这失败了.

But I have a requirement to enable just few fields. I tried such a code that was given for Multiple binds on a given node but was for the property "required". So this fails.

<xforms:bind ref="instance('form-name')/some-node" readonly="false()"/>

那么，是否可以单独为几个节点覆盖表单实例的全局只读设置?

So, is there away to override the global read-only setting for the form instance for a few nodes alone?

推荐答案

正如您所指出的，使用 readonly="false()" 的绑定无效，因为这是默认设置，并且根据管理 给定节点上的多重绑定.

As you noted, a bind with readonly="false()" has no effect, since this is the default, and it won't override another bind saying that this node is readonly, per the rules governing multiple binds on a given node.

但是，您可以编写一个绑定，使实例中的所有叶元素(即不包含任何其他元素的元素:///*[empty(*)])读取-only，特定元素除外.例如:

However, you can write a single bind that makes all the leaf elements in your instance (i.e. elements that don't contain any other element: //*[empty(*)]) read-only, except specific elements. For instance:

<xforms:bind ref="//*[empty(*)] except (/some/node, /some/other/node, …)"
             readonly="true()"/>

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