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Fix non existent menu handling in nav block #36507

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merged 2 commits into from
Nov 24, 2021

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talldan
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@talldan talldan commented Nov 16, 2021

Description

When the wp_navigation post associated with a navigation block no longer exists (for example, a user deleted it using wp-admin), the block is designed to show a message:
Screenshot 2021-11-16 at 4 28 26 pm

There are two problems:

  1. This warning is never actually shown, instead when an wp_navigation doesn't exist the user ends up with an empty block that can't be saved.
  2. The warning isn't useful. The user can't fix the problem without removing and adding the block again.

This fixes both of those issues:

  1. The first solution is to use getEntityRecord to determine if an entity exists instead of getEditedEntityRecord. getEditedEntityRecord always returns an object once resolved which makes it hard to tell if an entity is missing. getEntityRecord returns undefined. This fix is in the useNavigationMenu hook.
  2. The second fix is to remove the warning, and when the associated entity no longer exists the block naturally falls back to the block placeholder. All that was required is to delete the code associated with this.

Note - the template part block also has this issue. The navigation block's code was copied from the template part block. I'll make an issue about this.

How has this been tested?

  1. Add a navigation block in a post
  2. Start empty and name the menu.
  3. In the code editor mode, edit the navigationMenuId to be an id that doesn't exist on your site (e.g. 999999).
  4. Select the navigation block and observe the placeholder is shown

Types of changes

Bug fix (non-breaking change which fixes an issue)

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).

@talldan talldan added [Type] Bug An existing feature does not function as intended [Block] Navigation Affects the Navigation Block labels Nov 16, 2021
@talldan talldan self-assigned this Nov 16, 2021
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Size Change: -26 B (0%)

Total Size: 1.09 MB

Filename Size Change
build/block-library/index.min.js 161 kB -26 B (0%)
ℹ️ View Unchanged
Filename Size
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@Mamaduka Mamaduka left a comment

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Works as expected. Thanks, @talldan.

Before After
CleanShot 2021-11-24 at 12 05 02 CleanShot 2021-11-24 at 12 04 23

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@aristath aristath left a comment

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Great improvement!
Looks good to me 👍

@aristath aristath merged commit 50b19e7 into trunk Nov 24, 2021
@aristath aristath deleted the fix/non-existent-menu-in-nav-block branch November 24, 2021 08:28
@github-actions github-actions bot added this to the Gutenberg 12.1 milestone Nov 24, 2021
@talldan talldan added the Backport to WP 6.7 Beta/RC Pull request that needs to be backported to the WordPress major release that's currently in beta label Nov 24, 2021
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talldan commented Nov 24, 2021

Thanks for reviewing and merging, I'd forgotten about this 😄

@noisysocks noisysocks removed the Backport to WP 6.7 Beta/RC Pull request that needs to be backported to the WordPress major release that's currently in beta label Nov 28, 2021
noisysocks pushed a commit that referenced this pull request Nov 29, 2021
* Fix missing menu detection

* Remove warning state, just fall back to placeholder
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[Block] Navigation Affects the Navigation Block [Type] Bug An existing feature does not function as intended
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