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FlatTermSelector: Avoid errors when returned terms aren't iterable #41099

Merged
merged 1 commit into from
May 17, 2022
Merged

FlatTermSelector: Avoid errors when returned terms aren't iterable #41099

merged 1 commit into from
May 17, 2022

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Mamaduka
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What?

Resolves #41095.

PR fixes JS error when getEntityRecords resolves to null for the terms. It happens when the endpoint returns 404.

Why?

The code treated terms as iterable without checking for null values.

How?

PR adds checks before mapping or spreading the terms variable. There's a similar guard for search results.

Testing Instructions

  1. Open a Post.
  2. Add Tags to a post and save the post.
  3. Emulate 404 server response using the snippet below.
  4. Refresh the Post page.
  5. Confirm that editor doesn't crash, and the console only displays errors for failed HTTP requests.
add_filter( 'rest_post_dispatch', function( $response, $server, $request ) {
	if ( $request->get_route() === '/wp/v2/tags' ) {
		$response->set_data( null );
		$response->set_status( 404 );
	}

	return $response;
}, 10, 3 );

@Mamaduka Mamaduka self-assigned this May 17, 2022
@Mamaduka Mamaduka added [Type] Bug An existing feature does not function as intended General Interface Parts of the UI which don't fall neatly under other labels. labels May 17, 2022
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Size Change: 0 B

Total Size: 1.24 MB

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ntsekouras
ntsekouras approved these changes May 17, 2022
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Thanks George!

@Mamaduka Mamaduka merged commit c3e86c4 into trunk May 17, 2022
@Mamaduka Mamaduka deleted the fix/flat-term-selector-errors branch May 17, 2022 08:00
@github-actions github-actions bot added this to the Gutenberg 13.3 milestone May 17, 2022
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@adamziel, @gziolo, I'm not sure if you want to backport this into 6.0.

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gziolo commented May 17, 2022

That was a really quick fix for the issue that @peterwilsoncc raised recently. I'm sure we want to include it 💯

@gziolo gziolo 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 May 17, 2022
adamziel pushed a commit that referenced this pull request May 17, 2022
@Mamaduka @adamziel
FlatTermSelector: Avoid errors when returned terms aren't iterable (#…
4e3a70a 
…41099)
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I just cherry-picked this to wp/6.0 branch to be included in the next release: 4e3a70a

@adamziel adamziel 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 May 17, 2022
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@ntsekouras ntsekouras ntsekouras approved these changes

@peterwilsoncc peterwilsoncc Awaiting requested review from peterwilsoncc

@glendaviesnz glendaviesnz Awaiting requested review from glendaviesnz

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General Interface Parts of the UI which don't fall neatly under other labels. [Type] Bug An existing feature does not function as intended
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FlatTermSelector crashes editor: Can't access property "map", terms is null
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