Question

I’m trying to change how the image gallery is displayed but only for specific products or specific categories. Using the developer display hints, I can see that the block I want to modify for certain products is output by media.phtml.

Suppose I have an alternate file called media-special.phtml, what XML do I need to use and where do I put that XML, to use media-special.phtml instead of media.phtml for specific products or specific categories?

Answer 1

Both categories and products allow you to save layout xml along with the entity record. In this field for the desired entities, add the following:

<action method="setTemplate" block="product.info.media">
    <tpl>path/to/media-special.phtml</tpl>
</action>