如果我有一个 XForms 实例，例如
<xforms:instance id="myvrs">
<myvrs>
<subitem />
</myvrs>
</xforms:instance>
<xforms:instance id="tmp">
<temp>
<item><subitem>11</subitem></item>
<item><subitem>21</subitem><subitem>22</subitem></item>
<item></item>
</temp>
</xforms:instance>
如何使用类似的循环
<xforms:trigger>
<xforms:label>button</xforms:label>
<xforms:action events:event="DOMActivate">
forall in instance('tmp')/item
<xforms:insert context="instance('tmp')/item" origin="instance('myvrs')/subitem" />
endforall
</xforms:action>
</xforms:trigger>
我可以获得实例
<xforms:instance id="tmp">
<temp>
<item><subitem>11</subitem><subitem></subitem></item>
<item><subitem>21</subitem><subitem>22</subitem><subitem></subitem></item>
<item><subitem></subitem></item>
</temp>
</xforms:instance>
谢谢
最佳答案
要在 XForms 1.1 中进行迭代，您需要使用 while 属性(请参阅 10.18 Iteration of XForms Actions )。
在您的情况下，可以通过额外的实例来完成:
<xf:instance id="iterator">
<iterator xmlns=""></iterator>
</xf:instance>
然后操作可以是:
<xf:action ev:event="DOMActivate">
<xf:setvalue ref="instance('iterator')" value="1"></xf:setvalue>
<xf:action while="instance('iterator') < count(instance('tmp')/item)">
<xf:insert context="instance('tmp')/item[position()=instance('iterator')]"
origin="instance('myvrs')/subitem" nodeset="subitem" position="after"></xf:insert>
<xf:setvalue ref="instance('iterator')" value="instance('iterator') + 1"></xf:setvalue>
</xf:action>
</xf:action>
请注意，这是标准 XForms 1.1，应该与其他实现一起使用。
完整的 XForms 是:
<html xmlns:xf="http://www.w3.org/2002/xforms" xmlns="http://www.w3.org/1999/xhtml"
xmlns:ev="http://www.w3.org/2001/xml-events" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<head>
<title>Insert for all</title>
<xf:model>
<xf:instance id="myvrs">
<myvrs xmlns="">
<subitem></subitem>
</myvrs>
</xf:instance>
<xf:instance id="tmp">
<temp xmlns="">
<item>
<subitem>11</subitem>
</item>
<item>
<subitem>21</subitem>
<subitem>22</subitem>
</item>
<item></item>
</temp>
</xf:instance>
<xf:instance id="iterator">
<iterator xmlns=""></iterator>
</xf:instance>
</xf:model>
</head>
<body>
<xf:trigger>
<xf:label>button</xf:label>
<xf:action ev:event="DOMActivate">
<xf:setvalue ref="instance('iterator')" value="1"></xf:setvalue>
<xf:action while="instance('iterator') < count(instance('tmp')/item)">
<xf:insert context="instance('tmp')/item[position()=instance('iterator')]"
origin="instance('myvrs')/subitem" nodeset="subitem" position="after"></xf:insert>
<xf:setvalue ref="instance('iterator')" value="instance('iterator') + 1"></xf:setvalue>
</xf:action>
</xf:action>
</xf:trigger>
<fr:xforms-inspector xmlns:fr="http://orbeon.org/oxf/xml/form-runner"></fr:xforms-inspector>
</body>
</html>
关于orbeon - XForms:使用循环为所有列表项插入子项，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21187112/