Query block: validate in_the_loop() to true

[RavanH]

What problem does this address?

Wanting to filter post links on a classic archive template, I could hook into the post_link filter and then do a in_the_loop() check to make sure to only work on links in the post archive, not in the menu for example.

But The Loop on a block based theme (like block-base) is done with the wp:query block. This loop however, does not set $wp_query->in_the_loop to true. This makes the above example fail on the Query block loop while working on a "regular" loop.

What is your proposed solution?

Make Query block loops behave more like regular loops, starting with $wp_query->in_the_loop :)

[JakePT]

This is something I'm also interested in. In ElasticPress we have a server-rendered block that should only display if there is a current post. So only on singular pages or inside a loop. The problem is that we surprisingly can't use in_the_loop() in the block's render function because it returns false inside the query loop block.