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Post Content block: Allow Block Hooks child insertion #56972

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Post Content block: Allow Block Hooks child insertion #56972

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Post Content block: Allow Block Hooks child insertion
ockham Dec 8, 2023
74439b5
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ockham Dec 13, 2023
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40 changes: 39 additions & 1 deletion packages/block-library/src/post-content/index.php
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Original file line number Diff line number Diff line change
Expand Up @@ -54,9 +54,47 @@ function render_block_core_post_content( $attributes, $content, $block ) {

$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => 'entry-content' ) );

// Allow `first_child` and `last_child` insertion.
// As the Post Content block simply renders the markup returned by the
// `get_the_content()` function (wrapped in a `<div>` block wrapper),
// Limitations:
// - Changes to anchor block by get_hooked_block_markup() aren't respected.
// - No $context available.

$context = null;
$anchor_block_type = 'core/post-content';
$anchor_block = array(
'blockName' => $anchor_block_type,
'attributes' => $attributes,
);
$hooked_blocks = get_hooked_blocks();

$first_child_markup = '';
$hooked_block_types_first_child = isset( $hooked_blocks[ $anchor_block_type ]['first_child'] )
? $hooked_blocks[ $anchor_block_type ]['first_child']
: array();

$hooked_block_types_first_child = apply_filters( 'hooked_block_types', $hooked_block_types_first_child, 'first_child', $anchor_block_type, $context );
foreach ( $hooked_block_types_first_child as $hooked_block_type_first_child ) {
$first_child_markup .= get_hooked_block_markup( $anchor_block, $hooked_block_type_first_child );
}

// TODO: Should run `get_the_content` and apply `the_content` filter here.

$last_child_markup = '';
$hooked_block_types_last_child = isset( $hooked_blocks[ $anchor_block_type ]['last_child'] )
? $hooked_blocks[ $anchor_block_type ]['last_child']
: array();

$hooked_block_types_last_child = apply_filters( 'hooked_block_types', $hooked_block_types_last_child, 'last_child', $anchor_block_type, $context );
foreach ( $hooked_block_types_last_child as $hooked_block_type_last_child ) {
// $parent_block should be a reference. That's an array. Tricky.
$last_child_markup .= get_hooked_block_markup( $anchor_block, $hooked_block_type_last_child );
}

return (
'<div ' . $wrapper_attributes . '>' .
$content .
$first_child_markup . $content . $last_child_markup .
'</div>'
);
}
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