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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 192 | |
| 193 | /** |
| 194 | * Filters the block being rendered in render_block(), before it's processed. |
| 195 | * |
| 196 | * @since 5.1.0 |
| 197 | * |
| 198 | * @param array $block The block being rendered. |
| 199 | * @param array $source_block An un-modified copy of $block, as it appeared in the source content. |
| 200 | */ |
| 201 | $block = apply_filters( 'render_block_data', $block, $source_block ); |
| 202 | |
| 203 | $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); |
| 204 | $is_dynamic = $block['blockName'] && null !== $block_type && $block_type->is_dynamic(); |
| 205 | $block_content = ''; |
| 206 | $index = 0; |
| 207 | |
| 208 | foreach ( $block['innerContent'] as $chunk ) { |
| 209 | $block_content .= is_string( $chunk ) ? $chunk : render_block( $block['innerBlocks'][ $index++ ] ); |
| 210 | } |