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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 |
|---|---|
| 2172 | * Filters the list of blocks that can contribute to the excerpt. |
| 2173 | * |
| 2174 | * If a dynamic block is added to this list, it must not generate another |
| 2175 | * excerpt, as this will cause an infinite loop to occur. |
| 2176 | * |
| 2177 | * @since 5.0.0 |
| 2178 | * |
| 2179 | * @param string[] $allowed_blocks The list of names of allowed blocks. |
| 2180 | */ |
| 2181 | $allowed_blocks = apply_filters( 'excerpt_allowed_blocks', $allowed_blocks ); |
| 2182 | $blocks = parse_blocks( $content ); |
| 2183 | $output = ''; |
| 2184 | |
| 2185 | foreach ( $blocks as $block ) { |
| 2186 | if ( in_array( $block['blockName'], $allowed_blocks, true ) ) { |
| 2187 | if ( ! empty( $block['innerBlocks'] ) ) { |
| 2188 | if ( in_array( $block['blockName'], $allowed_wrapper_blocks, true ) ) { |
| 2189 | $output .= _excerpt_render_inner_blocks( $block, $allowed_blocks ); |
| 2190 | continue; |