FlatTermSelector: Be more defensive about termIds#63461
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It's possible (likely through a bug elsehwere) for FlatTermSelector to completely crash the editor if it can't get termIds from the post being edited. This change prevents that crash. The error can happen when <FlatTermSelector> tries to access _termIds.join and _termIds.length even when _termIds is undefined. This is undefined if the current editor state doesn't have any changed for the relevent attribute [0] and the original post doesn't have the relevent attribute [1]. [0] https://github.com/WordPress/gutenberg/blob/4da057ecd6958d40b8f2a83db1152320e5f161e6/packages/editor/src/store/selectors.js#L329 [1] https://github.com/WordPress/gutenberg/blob/4da057ecd6958d40b8f2a83db1152320e5f161e6/packages/editor/src/store/selectors.js#L276
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Co-authored-by: dsas <dsas@git.wordpress.org> Co-authored-by: Mamaduka <mamaduka@git.wordpress.org>
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What?
Be more defensive against bad data in
<FlatTermSelector>that could cause a crash.Why?
It's possible (likely through a bug elsewhere) for
<FlatTermSelector>to completely crash the editor if it can't gettermIdsfrom the post being edited. This change prevents that crash.The error can happen when
<FlatTermSelector>tries to access_termIds.joinand_termIds.lengtheven when_termIdsis undefined. This is undefined if the current editor state doesn't have any changes for the relevant attribute and the original post doesn't have the relevant attribute. This shouldn't be possible normally.How?
Use the optional chaining operator.
Testing Instructions
It's difficult to construct an artificial test case, but on the happy path then nothing should change at all, using the post tags in the sidebar when editing a post should continue to work exactly as it does now.