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Query Pagination: Don't render an empty container #35092

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merged 4 commits into from
Sep 29, 2021

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@Mamaduka Mamaduka commented Sep 23, 2021

Description

Fixes #30522.
Alternative to #33635.

Updates Query Pagination block to use render_callback for rendering container div element. Render callback won't render anything if block content is empty.

How has this been tested?

  1. Add Query block with pagination to page or template.
  2. Change the perPage number so it shouldn't display pagination.
  3. Verify that no empty pagination container is rendered.
  4. Change the perPage once again, so now it renders paginations.
  5. Verify that pagination works correctly.

Example Query

<!-- wp:query {"queryId":17,"query":{"perPage":10,"pages":0,"offset":0,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
<div class="wp-block-query"><!-- wp:post-template -->
<!-- wp:post-title {"isLink":true} /-->

<!-- wp:post-featured-image {"isLink":true,"align":"wide"} /-->

<!-- wp:separator -->
<hr class="wp-block-separator"/>
<!-- /wp:separator -->

<!-- wp:post-date /-->
<!-- /wp:post-template -->

<!-- wp:query-pagination -->
<div class="wp-block-query-pagination"><!-- wp:query-pagination-previous /-->

<!-- wp:query-pagination-numbers /-->

<!-- wp:query-pagination-next /--></div>
<!-- /wp:query-pagination --></div>
<!-- /wp:query -->

Types of changes

Bugfix

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).

@Mamaduka Mamaduka requested a review from ajitbohra as a code owner September 23, 2021 14:00
@Mamaduka Mamaduka requested review from ntsekouras and removed request for ajitbohra September 23, 2021 14:00
@Mamaduka Mamaduka self-assigned this Sep 23, 2021
@Mamaduka Mamaduka added [Block] Query Pagination Affects the Query Pagination Block - used for pagination within the Query Loop Block [Type] Bug An existing feature does not function as intended labels Sep 23, 2021
@Mamaduka Mamaduka changed the title Fix/empty query pagination render Query Pagination: Don't render an empty container Sep 23, 2021
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github-actions bot commented Sep 23, 2021

Size Change: +41 B (0%)

Total Size: 1.06 MB

Filename Size Change
build/block-library/index.min.js 148 kB +41 B (0%)
ℹ️ View Unchanged
Filename Size
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@Mamaduka Mamaduka force-pushed the fix/empty-query-pagination-render branch from f60a349 to ba98be8 Compare September 24, 2021 10:56
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@jffng jffng left a comment

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Thank you for working on this! It works as advertised — no container is rendered if pagination is empty.

I think this change requires block themes to update their templates if they reference the old query pagination markup. For example, tt1-blocks: https://github.com/WordPress/theme-experiments/blob/master/tt1-blocks/block-templates/index.html#L51 — this wrapping div has to be removed for the container not to be rendered.

Should that be documented somewhere?

@Mamaduka
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Hi, @jffng

With deprecation in place, old templates shouldn't break, but I think the update would be good.

Should that be documented somewhere?

Not sure what would be the best place for this. I guess once FSE is stable, we will include similar changes in make.wp/core posts.

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@carolinan carolinan left a comment

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Works well.
And I do not see any block validation errors or warnings with themes that still use the old markup.

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Thanks for testing/reviews, @jffng and @carolinan.

@Mamaduka Mamaduka merged commit c489f23 into trunk Sep 29, 2021
@Mamaduka Mamaduka deleted the fix/empty-query-pagination-render branch September 29, 2021 04:29
@github-actions github-actions bot added this to the Gutenberg 11.7 milestone Sep 29, 2021
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[Block] Query Pagination Affects the Query Pagination Block - used for pagination within the Query Loop Block [Type] Bug An existing feature does not function as intended
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Query Pagination block is output when empty
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