ZK: enable button in listcell only for the selected item of a listbox

Question

In the next listbox I load elements with template:

<listbox model="@load(vm.resAccepted)" selectedItem="@bind(vm.selResAccepted)">
  <template name="model">
    <listitem>
      <listcell label="@load(each.eventName)" />
      <listcell label="@load(each.userName)" />
      <listcell>
        <button image="/img/button_mail.png"/>
      </listcell>
    </listitem>
  </template>
</listbox>

My goal is to enable the button of the listitem ONLY for the row the user selects.

To do this, I try

<button disabled="@load(vm.selResAccepted.id=each.id?'false':'true')" />

checking if the unique field id is the same of the selected element, but it fails.

Any help will be appreciated.

Answer 1

You can use eq for equals comparison:

<button disabled="@load(vm.selResAccepted.id eq each.id?'false':'true')" />

or maybe even better: disabled when selected item is not the current item

<button disabled="@load(vm.selResAccepted ne each)" />

here ne is not equal