[wp-trac] [WordPress Trac] #64505: REST API: Block renderer passes incomplete block shape
WordPress Trac
noreply at wordpress.org
Thu Jan 15 04:50:14 UTC 2026
#64505: REST API: Block renderer passes incomplete block shape
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Reporter: dlh | Owner: (none)
Type: defect (bug) | Status: new
Priority: normal | Milestone: Awaiting Review
Component: REST API | Version: 5.4
Severity: normal | Keywords:
Focuses: |
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Since [47360], the `WP_REST_Block_Renderer_Controller::get_item()` method
creates "an array representation simulating the output of parse_blocks"
and passes it to `render_block()`, but the array is missing the
`innerBlocks` key.
This missing key causes issues with downstream code that either treats a
block without `innerBlocks` as invalid input or, more commonly, assumes
that `innerBlocks` is present and accesses it unconditionally
([https://github.com/WordPress/wordpress-
develop/blob/5ed1e083f0d3e5207bf467e20845129a20fb3c31/src/wp-
includes/blocks.php#L2241 example]).
Instead of manually constructing an array, one can be created from a
`WP_Block_Parser_Block`, as proposed in the linked PR, which will provide
higher fidelity to the shape returned by `parse_blocks()`.
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Ticket URL: <https://core.trac.wordpress.org/ticket/64505>
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