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Blocks: Introduce a variation of serialize blocks helper with traversing

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Introduces two new functions `traverse_and_serialize_blocks` and `traverse_and_serialize_block` with the additional `$callback` argument. It is possible to pass parent block, block index, chunk index to the callback argument.

Reverts changes applied to `serialize_blocks` and `serialize_block` in #59327 with [56557].

Props ockham, mukesh27.
See #59313.




git-svn-id: https://develop.svn.wordpress.org/trunk@56620 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Greg Ziółkowski 2023-09-19 12:48:41 +00:00
parent 3916624c13
commit 48b9b6cbab
3 changed files with 105 additions and 21 deletions
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2
src/wp-includes/block-template-utils.php
View File

@ -609,7 +609,7 @@ function _build_block_template_result_from_file( $template_file, $template_type
}
$blocks = parse_blocks( $template_content );
$template->content = serialize_blocks( $blocks, '_inject_theme_attribute_in_template_part_block' );
$template->content = traverse_and_serialize_blocks( $blocks, '_inject_theme_attribute_in_template_part_block' );
return $template;
}

89
src/wp-includes/blocks.php
View File

@ -927,22 +927,16 @@ function get_comment_delimited_block_content( $block_name, $block_attributes, $b
* instead preserve the markup as parsed.
*
* @since 5.3.1
* @since 6.4.0 The `$callback` parameter was added.
*
* @param array $block A representative array of a single parsed block object. See WP_Block_Parser_Block.
* @param callable|null $callback Optional. Callback to run on each block in the tree before serialization. Default null.
* @param array $block A representative array of a single parsed block object. See WP_Block_Parser_Block.
* @return string String of rendered HTML.
*/
function serialize_block( $block, $callback = null ) {
if ( is_callable( $callback ) ) {
$block = call_user_func( $callback, $block );
}
function serialize_block( $block ) {
$block_content = '';
$index = 0;
foreach ( $block['innerContent'] as $chunk ) {
$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ], $callback );
$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] );
}
if ( ! is_array( $block['attrs'] ) ) {
@ -961,16 +955,83 @@ function serialize_block( $block, $callback = null ) {
* parsed blocks.
*
* @since 5.3.1
* @since 6.4.0 The `$callback` parameter was added.
*
* @param array[] $blocks An array of representative arrays of parsed block objects. See serialize_block().
* @param callable|null $callback Optional. Callback to run on each block in the tree before serialization. Default null.
* @param array[] $blocks An array of representative arrays of parsed block objects. See serialize_block().
* @return string String of rendered HTML.
*/
function serialize_blocks( $blocks, $callback = null ) {
function serialize_blocks( $blocks ) {
return implode( '', array_map( 'serialize_block', $blocks ) );
}
/**
* Traverses the block applying transformations using the callback provided and returns the content of a block,
* including comment delimiters, serializing all attributes from the given parsed block.
*
* This should be used when there is a need to modify the saved block.
* Prefer `serialize_block` when preparing a block to be saved to post content.
*
* @since 6.4.0
*
* @see serialize_block()
*
* @param array $block A representative array of a single parsed block object. See WP_Block_Parser_Block.
* @param callable $callback Callback to run on each block in the tree before serialization.
* It is called with the following arguments: $block, $parent_block, $block_index, $chunk_index.
* @return string String of rendered HTML.
*/
function traverse_and_serialize_block( $block, $callback ) {
$block_content = '';
$block_index = 0;
foreach ( $block['innerContent'] as $chunk_index => $chunk ) {
if ( is_string( $chunk ) ) {
$block_content .= $chunk;
} else {
$inner_block = call_user_func(
$callback,
$block['innerBlocks'][ $block_index ],
$block,
$block_index,
$chunk_index
);
$block_index++;
$block_content .= traverse_and_serialize_block( $inner_block, $callback );
}
}
if ( ! is_array( $block['attrs'] ) ) {
$block['attrs'] = array();
}
return get_comment_delimited_block_content(
$block['blockName'],
$block['attrs'],
$block_content
);
}
/**
* Traverses the blocks applying transformations using the callback provided,
* and returns a joined string of the aggregate serialization of the given parsed blocks.
*
* This should be used when there is a need to modify the saved blocks.
* Prefer `serialize_blocks` when preparing blocks to be saved to post content.
*
* @since 6.4.0
*
* @see serialize_blocks()
*
* @param array[] $blocks An array of representative arrays of parsed block objects. See serialize_block().
* @param callable $callback Callback to run on each block in the tree before serialization.
* It is called with the following arguments: $block, $parent_block, $block_index, $chunk_index.
* @return string String of rendered HTML.
*/
function traverse_and_serialize_blocks( $blocks, $callback ) {
$result = '';
foreach ( $blocks as $block ) {
$result .= serialize_block( $block, $callback );
// At the top level, there is no parent block, block index, or chunk index to pass to the callback.
$block = call_user_func( $callback, $block );
$result .= traverse_and_serialize_block( $block, $callback );
}
return $result;
}

35
tests/phpunit/tests/blocks/serialize.php
View File

@ -13,14 +13,15 @@ class Tests_Blocks_Serialize extends WP_UnitTestCase {
/**
* @dataProvider data_serialize_identity_from_parsed
*
* @param string $original Original block markup.
*/
public function test_serialize_identity_from_parsed( $original ) {
$blocks = parse_blocks( $original );
$actual = serialize_blocks( $blocks );
$expected = $original;
$actual = serialize_blocks( $blocks );
$this->assertSame( $expected, $actual );
$this->assertSame( $original, $actual );
}
public function data_serialize_identity_from_parsed() {
@ -58,13 +59,13 @@ class Tests_Blocks_Serialize extends WP_UnitTestCase {
/**
* @ticket 59327
*
* @covers ::serialize_blocks
* @covers ::traverse_and_serialize_blocks
*/
public function test_callback_argument() {
public function test_traverse_and_serialize_blocks() {
$markup = "<!-- wp:outer --><!-- wp:inner {\"key\":\"value\"} -->Example.<!-- /wp:inner -->\n\nExample.\n\n<!-- wp:void /--><!-- /wp:outer -->";
$blocks = parse_blocks( $markup );
$actual = serialize_blocks( $blocks, array( __CLASS__, 'add_attribute_to_inner_block' ) );
$actual = traverse_and_serialize_blocks( $blocks, array( __CLASS__, 'add_attribute_to_inner_block' ) );
$this->assertSame(
"<!-- wp:outer --><!-- wp:inner {\"key\":\"value\",\"myattr\":\"myvalue\"} -->Example.<!-- /wp:inner -->\n\nExample.\n\n<!-- wp:void /--><!-- /wp:outer -->",
@ -78,4 +79,26 @@ class Tests_Blocks_Serialize extends WP_UnitTestCase {
}
return $block;
}
/**
* @ticket 59327
*
* @covers ::traverse_and_serialize_blocks
*
* @dataProvider data_serialize_identity_from_parsed
*
* @param string $original Original block markup.
*/
public function test_traverse_and_serialize_identity_from_parsed( $original ) {
$blocks = parse_blocks( $original );
$actual = traverse_and_serialize_blocks(
$blocks,
function ( $block ) {
return $block;
}
);
$this->assertSame( $original, $actual );
}
}