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https://issues.apache.org/jira/browse/TAP5-496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Folke Behrens reopened TAP5-496:
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The If component's element, the <li> in this case, will not appear in output
markup.
> Dummy component which renders nothing
> -------------------------------------
>
> Key: TAP5-496
> URL: https://issues.apache.org/jira/browse/TAP5-496
> Project: Tapestry 5
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.0.18
> Reporter: Folke Behrens
> Assignee: Howard M. Lewis Ship
>
> I use a lot of dummy texts in my template to see what the page will actually
> look like when rendered. To filter out these fragments I created a "Dummy"
> component whose setupRender method always returns "false".
> I don't know if this is efficient but it would be nice to have something like
> this already in T5's component library.
> More efficient would be a special marker XML attribute that the template
> parser recognizes. Maybe something like a t:test attribute which is works
> like <t:if test="...">...</t:if>. If the contained expression evaluations to
> false or null the marked element is filtered.
> <ul>
> <li t:test="show.item">conditional item</li>
> <li t:test="literal:false">dummy item</li>
> </ul>
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