Displaying first Image from repeaters on parent page.

Thanks Drew. How do I then output it from the parent?

Here's what I have:

Parent template:

            <?php
                perch_pages_navigation(array(
                        'template' => array('groups.html'),
                        'from-path' => '/gallery',
                        'levels'    => 2,
                ));
            ?>

/templates/navigation/groups.html

    <li>
        <a href="<perch:pages id="pagePath" />">
            <perch:pages id="pageNavText" />
            <perch:content id="gallery_image" type="image" label="Gallery image" width="232" height="150" crop="true" suppress="true"/>
        </a>
    </li>

Subpages template:

<perch:repeater id="images" label="Images">
    <perch:before>
    <ul>
      </perch:before>

      <li>
        <img src="<perch:content id="gallery_image" type="image" label="Gallery image" width="232" height="150" crop="true"  />" />
      </li>

    <perch:after>
    </ul>
    </perch:after>
</perch:repeater>

Yes the repeater is for a gallery of images on each subpage and that works.

What I'm trying to do is show the first image on the parent page using perch_pages_navigation

Just the first item.

Each subpage has a repeater (header and image).

I want the parent to display a list made up from each subpage's first repeater item.

I know I can add images for nav with attributes, but I was trying to remove that step for editors, so that it just picks up the first image added to the list on each new subpage.

Yes I can see that I'm going about it the wrong way though. Tried this:

templates/content/gallery:

<perch:repeater id="images" label="Images">
    <perch:before>
    <ul id="lightgallery" class="list-unstyled row" >
      </perch:before>
         <perch:if exists="perch_item_first"> 
                 <li> 
                <img src="<perch:content id="gallery_first_image" type="image" label="Gallery image" width="232" height="150" crop="true"  />" />
                 </li>
         <perch:else />
                 <li> 
                <img src="<perch:content id="gallery_image" type="image" label="Gallery image" width="232" height="150" crop="true"  />" />
                 </li>
         </perch:if>
    <perch:after>
    </ul>
    </perch:after>
</perch:repeater>

Then templates/navigation/galleries:

<li>
    <a href="<perch:pages id="pagePath" />" >
        <img src="<perch:pages type="image" id="gallery_first_image" width="232" height="150" crop="true" />"/> 
        <perch:pages id="pageNavText" />
    </a>
</li>

Then:

<?php
    perch_pages_navigation(array(
        'from-path' => '/gallery',
        'levels'    => 1,
            'template' => 'galleries',
    ));
?>

A content region.

Can perch_content_custom() still get the first item from each new subpage that is created in the same way as perch_pages_navigation?

Ok thanks for all your help, I'll check it out.