CMS Made Simple Forums

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{$current_id = $item->item_id}

{*call LI2 summary action with empty summary template.
Just to get $items variable. May NOT work in later versions of CMSMS
Tested on CMSMS 1.12.1 / LI2 1.4.1*}	
{ListIt2test summarytemplate=next_prev assign=dummy}
{foreach $items as $sumitem}
  {if $sumitem->item_id == $current_id}
  {$iteration=$sumitem@iteration}
    {if $iteration > 1}{$prev_link = $items[$iteration-1]->url}{/if}
{if $iteration < $sumitem@total}{$next_link = $items[$iteration+1]->url}{/if}
  {break}
  {/if}
{/foreach}
<div class="next-prev">
{if isset($prev_link)}<a href="{$prev_link}">Previous item</a><br>{/if}
{if isset($next_link)}<a href="{$next_link}">Next item</a><br>}{/if}
</div>

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{*nothing here*}