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Block Library - Query: Use a WordPress loop for the query block #30405

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merged 6 commits into from
Mar 31, 2021

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Description

This PR changes the implementation of the query-loop block a bit.
Prior to this PR, we were running get_posts() to get the list of posts, and then ran these through a foreach loop.
With this PR, we are running a WP_Query and then the results of that go through a standard Loop (see WP loop docs for details).

The benefit of this tweak is that now WordPress functions and hooks work as expected, without breaking backwards-compatibility.

WooCommerce compatibility

This is not limited to WooCommerce, it applies to any and all plugins hooking in WP to change the way their templates are displayed. Until they transition to an FSE structure they need to remain functional, and with this PR they work.

How has this been tested?

Tested with an FSE theme:

  • Single posts using a template that had a query-loop and inside it the content.
  • Single posts with no loop, just the content.
  • Post categories
  • WooCommerce product categories
  • WooCommerce single product

In all cases the frontend was showing what was expected.

Checklist:

  • My code is tested.
  • My code follows the WordPress code style.
  • My code follows the accessibility standards.
  • I've tested my changes with keyboard and screen readers.
  • My code has proper inline documentation.
  • I've included developer documentation if appropriate.
  • [-] I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).

cc @ntsekouras

@aristath aristath added [Block] Post Content Affects the Post Content Block [Block] Query Loop Affects the Query Loop Block [Feature] Full Site Editing [Feature] Themes Questions or issues with incorporating or styling blocks in a theme. labels Mar 31, 2021
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Thanks for working on this Ari! In general I feel the direction is good but I would feel a lot more confident with testing the site editor as well. Do you think we should wait for woo 5.2 as is meant to include the FSE wsod fix ?

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aristath commented Mar 31, 2021

I would feel a lot more confident with testing the site editor as well. Do you think we should wait for woo 5.2 as is meant to include the FSE wsod fix ?

I tested locally by reverting this commit https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3219/files in WooCommerce (that is the one referenced in the linked comment) and didn't see anything break... Reverting the commit does fix the WSOD, and there doesn't seem to be anything breaking in the site-editor, but I can't really test previewing a single-post there. I don't think it's even possible right now, unless I'm missing an obvious method? 🤔

Regardless of that however, the fix is for more than just WooCommerce, it should also fix any plugin using a custom template for a custom post-type (like events, products, jobs listings etc).
I don't think we should wait for WC5.2... WC is not directly related to this PR, it's a happy side-effect, a test scenario to make sure that this is an improvement 😆

Co-authored-by: Nik Tsekouras <ntsekouras@outlook.com>
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I tested locally by reverting this commit https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3219/files in WooCommerce

I tested as well a bit there, as actually the site-editor is still there - but is hiding with a display:none :)

In general nothing broke to my testing either and the changes are reasonable. My main concerned was this and was answered.

Regardless of that however, the fix is for more than just WooCommerce,

I know, it was just easier for me to test with :)

I think we can move on with this and keep our eyes open for any regression 😄

Thanks for your work Ari!

@aristath aristath merged commit 158d03c into trunk Mar 31, 2021
@aristath aristath deleted the fix/query-loop-the-post branch March 31, 2021 14:02
@github-actions github-actions bot added this to the Gutenberg 10.4 milestone Mar 31, 2021
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nerrad commented Apr 1, 2021

Thanks for the fix! Just popping in here to let you know this fixed the rendering of single product pages for Woo.

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aristath commented Apr 1, 2021

Perfect, thanks for the update @nerrad!

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nerrad commented Apr 1, 2021

I'm not sure if this is related to this PR, but posting here. When I go to edit the single post template in the site editor, I see this (referring to the "No post found" for various blocks on the page):

CleanShot 2021-04-01 at 07 40 02@2x

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aristath commented Apr 1, 2021

I reverted the commit locally and it's the same without it :)
It's not actually a bug though... If I click on the (W) logo on the top-left, then go to Content > Posts > Hello World, the site-editor gets the post-ID and shows a true preview instead of placeholders. The same thing happens both with and without the code in this PR.

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nerrad commented Apr 1, 2021

Cool! I'm misunderstanding expectations here. It's all good 😄

@gziolo gziolo added the [Type] Experimental Experimental feature or API. label Apr 6, 2021
@gziolo gziolo changed the title Use a WordPress loop for the query block Block Library - Query: Use a WordPress loop for the query block Apr 6, 2021
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