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https://issues.apache.org/jira/browse/TAPESTRY-2213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12612263#action_12612263
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Igor Drobiazko commented on TAPESTRY-2213:
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There is already a parameter for Grid. Check out the 'empty' parameter.
> Loop component: Add possibility to specify a block when source iterable is
> empty
> --------------------------------------------------------------------------------
>
> Key: TAPESTRY-2213
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2213
> Project: Tapestry
> Issue Type: Improvement
> Components: Core Components
> Reporter: D. Marquis
> Priority: Minor
>
> I have a quick suggestion to improve the Loop component:
> We should be able to specify a block to display if the loop source is
> empty (size = 0)
> <div t:type="loop" source="anEmptyList">
> <t:parameter name="empty">There is no item matching your request</
> t:parameter>
> </div>
> I know we can do this :
> <t:if test="anEmptyList">
> <div t:type="loop" source="anEmptyList">
>
> </div>
> <t:parameter name="else">There is no item matching your
> request</t:parameter>
> </t:if>
> BUT this will have the result of calling the "getAnEmptyList()" getter
> in the component code twice.
> If you access the database in the getter (as the docs suggest quite a
> few times), this will call the database twice for nothing.
> Thanks ! :)
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