Posted by HankRatz on
URL: https://discuss.orbeon.com/Altering-dynamic-itemset-does-not-alter-select-control-reference-tp1461843.html

Hi programmers and residents of Saturn (see @orbeon ;)

The itemset for a select control is an instance that other
controls in the form insert into.  A trigger allows the user
to delete from the list -- click one or more in the select
control and click the "Remove" button/trigger.

All is working except that the reference to the select
is not recalculated  -- it lists all the strings that
were ever selected.

I am not sure if there was another step or this is a bug.  

I can point you to a the form, or, complete what I started below
for the sandbox. I didn't recognize anything in the Forge that
looked like this issue.

Cheers,
Hank

<xforms:instance id="things">
        <things xmlns=""/>
</xforms:instance>

<xforms:instance id="select-form">
    <config xmlns="">
        <thing-names/>
        <remove>true</remove> <!-- Initially disabled -->
    </config>
</xforms:instance>

<xforms:bind nodeset="instance('select-form')">
    <xforms:bind nodeset="remove" type="xs:boolean"
        readonly="boolean-from-string(.)"
        calculate="empty(instance('things')//thing)"/>
</xforms:bind>


<!-- In the form, the select lists "things" that were added elsewhere, and
     below it, a trigger deletes the things.  The UI is in sync, but the
      instance('thing-form')/remove retains values.
-->

<xforms:select ref="instance('select-form')/thing-names" appearance="compact">
  <xforms:itemset nodeset="instance('things')//thing">
     <xforms:value value="name"/>
     <xforms:label><xforms:output value="name"/></xforms:label>
   </xforms:itemset>
 </xforms:select>

<xforms:trigger ref="instance('select-form')/remove">
    <xforms:label> Remove Selected Things </xforms:label>
    <xforms:action ev:event="DOMActivate">
        <xforms:delete nodeset="instance('things')/thing[name=tokenize(instance('select-form')/remove,'\s')]"/>
    </xforms:action>
</xforms:trigger>



Hank Ratzesberger
NEES@UCSB
Institute for Crustal Studies,
University of California, Santa Barbara
805-893-8042







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