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1 <?php 2 /** 3 * Server-side rendering of the `core/gallery` block. 4 * 5 * @package WordPress 6 */ 7 8 /** 9 * Handles backwards compatibility for Gallery Blocks, 10 * whose images feature a `data-id` attribute. 11 * 12 * Now that the Gallery Block contains inner Image Blocks, 13 * we add a custom `data-id` attribute before rendering the gallery 14 * so that the Image Block can pick it up in its render_callback. 15 * 16 * @since 5.9.0 17 * 18 * @param array $parsed_block The block being rendered. 19 * @return array The migrated block object. 20 */ 21 function block_core_gallery_data_id_backcompatibility( $parsed_block ) { 22 if ( 'core/gallery' === $parsed_block['blockName'] ) { 23 foreach ( $parsed_block['innerBlocks'] as $key => $inner_block ) { 24 if ( 'core/image' === $inner_block['blockName'] ) { 25 if ( ! isset( $parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] ) && isset( $inner_block['attrs']['id'] ) ) { 26 $parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] = esc_attr( $inner_block['attrs']['id'] ); 27 } 28 } 29 } 30 } 31 32 return $parsed_block; 33 } 34 35 add_filter( 'render_block_data', 'block_core_gallery_data_id_backcompatibility' ); 36 37 /** 38 * Adds a unique ID to the gallery block context. 39 * 40 * @since 7.0.0 41 * 42 * @param array $context Default context. 43 * @param array $parsed_block Block being rendered, filtered by render_block_data. 44 * @return array Filtered context. 45 */ 46 function block_core_gallery_render_context( $context, $parsed_block ) { 47 if ( 'core/gallery' === $parsed_block['blockName'] ) { 48 $context['galleryId'] = uniqid(); 49 } 50 return $context; 51 } 52 53 add_filter( 'render_block_context', 'block_core_gallery_render_context', 10, 2 ); 54 55 /** 56 * Returns the column gap value used for Gallery image width calculations. 57 * 58 * @since 7.1.0 59 * 60 * @param string|array|null $gap Gallery block gap value. 61 * @param string $fallback_gap Fallback gap value. 62 * @return string Gallery column gap value. 63 */ 64 function block_core_gallery_get_column_gap_value( $gap, $fallback_gap ) { 65 if ( is_array( $gap ) ) { 66 $gap = $gap['left'] ?? $fallback_gap; 67 } 68 69 // Make sure $gap is a string to avoid PHP 8.1 deprecation error in preg_match() when the value is null. 70 $gap = is_string( $gap ) ? $gap : ''; 71 72 // Skip if gap value contains unsupported characters. 73 // Regex for CSS value borrowed from `safecss_filter_attr`, and used here 74 // because we only want to match against the value, not the CSS attribute. 75 $gap = $gap && preg_match( '%[\\\(&=}]|/\*%', $gap ) ? null : $gap; 76 77 // Get spacing CSS variable from preset value if provided. 78 if ( is_string( $gap ) && str_contains( $gap, 'var:preset|spacing|' ) ) { 79 $index_to_splice = strrpos( $gap, '|' ) + 1; 80 $slug = _wp_to_kebab_case( substr( $gap, $index_to_splice ) ); 81 $gap = "var(--wp--preset--spacing--$slug)"; 82 } 83 84 $gap_column = ( null !== $gap && '' !== $gap ) ? $gap : $fallback_gap; 85 86 // The unstable gallery gap calculation requires a real value (such as `0px`) and not `0`. 87 return '0' === $gap_column ? '0px' : $gap_column; 88 } 89 90 /** 91 * Resolves a Gallery block's `dynamicContent` to an ordered list of image 92 * attachment IDs. 93 * 94 * The `source` key is the dispatch discriminator and `args` holds the source's 95 * parameters. This `{ source, args }` shape mirrors the Block Bindings metadata 96 * shape so dynamic mode can migrate to an `innerBlocks` binding with minimal 97 * change. `core/attached-media` is a context-relative anchor (the post the gallery is 98 * rendered within); future sources translate their REST-named `args` (`author`, 99 * `categories`, `after`/`before`, `media_type`, etc.) into `WP_Query` arguments 100 * here. 101 * 102 * @since 7.0.0 103 * 104 * @param array $source The gallery's `dynamicContent` attribute. 105 * @param WP_Block $block The gallery block instance being rendered. 106 * @return int[] Ordered list of image attachment IDs. 107 */ 108 function block_core_gallery_resolve_dynamic_source( $source, $block ) { 109 if ( ! is_array( $source ) ) { 110 return array(); 111 } 112 113 $source_name = $source['source'] ?? null; 114 $args = isset( $source['args'] ) && is_array( $source['args'] ) ? $source['args'] : array(); 115 116 switch ( $source_name ) { 117 case 'core/attached-media': 118 // Prefer the post supplied via block context, falling back to the post 119 // being rendered. The fallback is what lets a post-bound template (e.g. 120 // `single`/`page`) resolve against the actual post at render time even 121 // though the editor has no concrete post to preview — the editor gates 122 // the dynamic-mode UI on that same context (see `use-dynamic-gallery.js`). 123 $post_id = $block->context['postId'] ?? get_the_ID(); 124 if ( ! $post_id ) { 125 return array(); 126 } 127 128 // Map the camelCase `args` (block-attribute convention) to WP_Query 129 // names, defaulting to the same order as the editor preview (see 130 // `dynamic-source.js`). Only REST-supported orderby values are 131 // allowed; `menu_order` is intentionally unsupported (it isn't a 132 // valid media REST `orderby`). 133 $orderby = $args['orderBy'] ?? 'date'; 134 if ( ! in_array( $orderby, array( 'date', 'title' ), true ) ) { 135 $orderby = 'date'; 136 } 137 $order = strtoupper( $args['order'] ?? 'desc' ) === 'ASC' ? 'ASC' : 'DESC'; 138 139 // Bound the number of resolved images until the gallery supports 140 // pagination. Kept in sync with the editor query's `per_page` cap; a 141 // case-insensitive grep for `max_images` finds both this and 142 // `MAX_IMAGES` in `dynamic-source.js`. 143 $max_images = 100; 144 145 $query = new WP_Query( 146 array( 147 'post_parent' => $post_id, 148 'post_type' => 'attachment', 149 'post_status' => 'inherit', 150 'post_mime_type' => 'image', 151 'orderby' => $orderby, 152 'order' => $order, 153 'posts_per_page' => $max_images, 154 'fields' => 'ids', 155 'no_found_rows' => true, 156 ) 157 ); 158 159 return array_map( 'intval', $query->posts ); 160 } 161 162 // Unknown or not-yet-implemented source type. 163 return array(); 164 } 165 166 /** 167 * Builds the link-related image block attributes for a dynamically rendered 168 * gallery image, mapping the gallery-wide `linkTo` setting onto a single image. 169 * 170 * Mirrors the editor's `getHrefAndDestination()` (see `gallery/utils.js`). 171 * 172 * @since 7.0.0 173 * 174 * @param int $attachment_id The image attachment ID. 175 * @param array $attributes The gallery block attributes. 176 * @return array Partial image block attributes (`href`, `linkDestination`, 177 * `linkTarget`, `rel`, `lightbox`). 178 */ 179 function block_core_gallery_dynamic_image_link_attributes( $attachment_id, $attributes ) { 180 $link_to = $attributes['linkTo'] ?? 'none'; 181 $attrs = array(); 182 183 switch ( $link_to ) { 184 // Gutenberg uses 'media'/'attachment'; WP Core uses 'file'/'post'. 185 case 'media': 186 case 'file': 187 $attrs['href'] = wp_get_attachment_url( $attachment_id ); 188 $attrs['linkDestination'] = 'media'; 189 break; 190 case 'attachment': 191 case 'post': 192 $attrs['href'] = get_attachment_link( $attachment_id ); 193 $attrs['linkDestination'] = 'attachment'; 194 break; 195 case 'lightbox': 196 $attrs['linkDestination'] = 'none'; 197 $attrs['lightbox'] = array( 'enabled' => true ); 198 break; 199 } 200 201 if ( ! empty( $attrs['href'] ) && '_blank' === ( $attributes['linkTarget'] ?? '' ) ) { 202 $attrs['linkTarget'] = '_blank'; 203 $attrs['rel'] = 'noopener'; 204 } 205 206 return $attrs; 207 } 208 209 /** 210 * Renders a single `core/image` block for a Gallery block running in dynamic 211 * mode, applying the gallery-wide settings that affect how an image renders. 212 * 213 * The image markup is generated here (via `wp_get_attachment_image()`) and 214 * rendered through a real `core/image` block instance so that the image block's 215 * own render callback and lightbox behavior run, and so the gallery's existing 216 * lightbox/interactivity post-processing can pick it up. 217 * 218 * @since 7.0.0 219 * 220 * @param int $attachment_id The image attachment ID. 221 * @param array $attributes The gallery block attributes. 222 * @param array $context Context to expose to the inner image block. 223 * @return string The rendered image block HTML, or an empty string on failure. 224 */ 225 function block_core_gallery_render_dynamic_image( $attachment_id, $attributes, $context ) { 226 $size_slug = $attributes['sizeSlug'] ?? 'large'; 227 $aspect_ratio = $attributes['aspectRatio'] ?? 'auto'; 228 229 $img_attr = array( 'class' => 'wp-image-' . $attachment_id ); 230 if ( $aspect_ratio && 'auto' !== $aspect_ratio ) { 231 // Run the aspect ratio through the same sanitization used for every other 232 // block inline style, so an unsafe value can't break out of the style 233 // attribute or inject additional markup. 234 $img_attr['style'] = safecss_filter_attr( 235 sprintf( 'aspect-ratio:%s;object-fit:cover;', $aspect_ratio ) 236 ); 237 } 238 239 $image_markup = wp_get_attachment_image( $attachment_id, $size_slug, false, $img_attr ); 240 if ( ! $image_markup ) { 241 return ''; 242 } 243 244 $image_attributes = array_merge( 245 array( 246 'id' => $attachment_id, 247 'data-id' => (string) $attachment_id, 248 'sizeSlug' => $size_slug, 249 ), 250 block_core_gallery_dynamic_image_link_attributes( $attachment_id, $attributes ) 251 ); 252 253 if ( $aspect_ratio && 'auto' !== $aspect_ratio ) { 254 $image_attributes['aspectRatio'] = $aspect_ratio; 255 $image_attributes['scale'] = 'cover'; 256 } 257 258 // Wrap in a link when the gallery links images somewhere. 259 if ( ! empty( $image_attributes['href'] ) ) { 260 $image_markup = sprintf( 261 '<a href="%1$s"%2$s%3$s>%4$s</a>', 262 esc_url( $image_attributes['href'] ), 263 isset( $image_attributes['linkTarget'] ) ? ' target="' . esc_attr( $image_attributes['linkTarget'] ) . '"' : '', 264 isset( $image_attributes['rel'] ) ? ' rel="' . esc_attr( $image_attributes['rel'] ) . '"' : '', 265 $image_markup 266 ); 267 } 268 269 // Use the raw caption (`post_excerpt`) so the frontend mirrors the editor 270 // preview, which builds the caption from the REST `caption.raw` value. Gap: 271 // the REST API exposes no caption run through `wp_get_attachment_caption`, so 272 // that filter isn't applied here either. 273 $attachment = get_post( $attachment_id ); 274 $caption = $attachment ? $attachment->post_excerpt : ''; 275 if ( '' !== $caption ) { 276 $image_markup .= sprintf( 277 '<figcaption class="wp-element-caption">%s</figcaption>', 278 wp_kses_post( $caption ) 279 ); 280 } 281 282 $figure = sprintf( 283 '<figure class="wp-block-image size-%1$s">%2$s</figure>', 284 esc_attr( $size_slug ), 285 $image_markup 286 ); 287 288 $image_block = array( 289 'blockName' => 'core/image', 290 'attrs' => $image_attributes, 291 'innerBlocks' => array(), 292 'innerHTML' => $figure, 293 'innerContent' => array( $figure ), 294 ); 295 296 return ( new WP_Block( $image_block, $context ) )->render(); 297 } 298 299 /** 300 * Renders the `core/gallery` block on the server. 301 * 302 * @since 6.0.0 303 * 304 * @param array $attributes Attributes of the block being rendered. 305 * @param string $content Content of the block being rendered. 306 * @param array $block The block instance being rendered. 307 * @return string The content of the block being rendered. 308 */ 309 function block_core_gallery_render( $attributes, $content, $block ) { 310 static $global_styles = null; 311 312 // In dynamic mode the gallery's images are resolved at render time instead of 313 // being authored as inner blocks, so `save.js` persists at most the 314 // gallery-level caption — a bare `<figcaption>`, or nothing when there is no 315 // caption. Resolve the configured source to a list of attachments, render an 316 // image block for each, and build the gallery `<figure>` wrapper from scratch. 317 // The gap/randomOrder/lightbox post-processing below then runs over the 318 // constructed markup unchanged. 319 if ( ! empty( $attributes['dynamicContent'] ) ) { 320 $attachment_ids = block_core_gallery_resolve_dynamic_source( $attributes['dynamicContent'], $block ); 321 322 // Nothing resolved — no attachments, or an unrecognized source. Render 323 // nothing rather than an empty gallery wrapper; a saved caption is 324 // meaningless without images, so it is intentionally dropped too. 325 if ( empty( $attachment_ids ) ) { 326 return ''; 327 } 328 329 // The source query only fetched IDs (`fields => ids`), which skips 330 // WP_Query's cache priming. Each image rendered below reads the 331 // attachment post and its meta (via `wp_get_attachment_image()`, 332 // `get_post()`, etc.), so warm the post and meta caches in a single pair 333 // of queries up front instead of paying ~two queries per attachment. 334 // Term cache is left cold: the render path doesn't read attachment terms. 335 if ( count( $attachment_ids ) > 1 ) { 336 _prime_post_caches( $attachment_ids, false, true ); 337 } 338 339 // Expose the gallery's provided context (plus galleryId/postId/postType) 340 // to each image block, since these images are rendered outside the 341 // gallery's real inner-block tree. 342 $image_context = array_merge( 343 is_array( $block->context ) ? $block->context : array(), 344 array( 345 'allowResize' => $attributes['allowResize'] ?? false, 346 'imageCrop' => $attributes['imageCrop'] ?? true, 347 'fixedHeight' => $attributes['fixedHeight'] ?? true, 348 'navigationButtonType' => $attributes['navigationButtonType'] ?? 'icon', 349 ) 350 ); 351 352 $images_markup = ''; 353 foreach ( $attachment_ids as $attachment_id ) { 354 $images_markup .= block_core_gallery_render_dynamic_image( $attachment_id, $attributes, $image_context ); 355 } 356 357 // Build the wrapper rather than parsing/splicing saved markup. 358 // `get_block_wrapper_attributes()` supplies the block-support 359 // classes/styles (align, color, border, spacing, anchor id); the layout 360 // render filter adds the flex layout classes downstream — the same way a 361 // static gallery's wrapper is composed (`useBlockProps.save()` plus that 362 // filter). Only the gallery-specific classes are added explicitly, and 363 // they mirror `save.js` (kept in sync deliberately — see that file). 364 $gallery_classes = 'wp-block-gallery has-nested-images'; 365 $gallery_classes .= isset( $attributes['columns'] ) 366 ? ' columns-' . (int) $attributes['columns'] 367 : ' columns-default'; 368 if ( $attributes['imageCrop'] ?? true ) { 369 $gallery_classes .= ' is-cropped'; 370 } 371 $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $gallery_classes ) ); 372 373 // In dynamic mode `save.js` persists only the gallery-level caption, so 374 // `$content` is the saved `<figcaption>` (or empty). Append it after the 375 // resolved images — matching the static gallery's `{images}{caption}` 376 // order — without parsing it. 377 $content = sprintf( '<figure %s>%s%s</figure>', $wrapper_attributes, $images_markup, $content ); 378 } 379 380 // Adds a style tag for the --wp--style--unstable-gallery-gap var. 381 // The Gallery block needs to recalculate Image block width based on 382 // the current gap setting in order to maintain the number of flex columns 383 // so a css var is added to allow this. 384 385 $style_attr = is_array( $attributes['style'] ?? null ) 386 ? $attributes['style'] 387 : array(); 388 if ( 389 defined( 'IS_GUTENBERG_PLUGIN' ) && 390 IS_GUTENBERG_PLUGIN && 391 function_exists( 'gutenberg_resolve_style_state_aliases' ) 392 ) { 393 $style_attr = gutenberg_resolve_style_state_aliases( $style_attr, 'core/gallery' ); 394 } 395 396 $unique_gallery_classname = wp_unique_id( 'wp-block-gallery-' ); 397 $processed_content = new WP_HTML_Tag_Processor( $content ); 398 $processed_content->next_tag(); 399 $processed_content->add_class( $unique_gallery_classname ); 400 401 // --gallery-block--gutter-size is deprecated. --wp--style--gallery-gap-default should be used by themes that want to set a default 402 // gap on the gallery. 403 $fallback_gap = 'var( --wp--style--gallery-gap-default, var( --gallery-block--gutter-size, var( --wp--style--block-gap, 0.5em ) ) )'; 404 405 if ( null === $global_styles ) { 406 $global_styles = function_exists( 'wp_get_global_styles' ) ? wp_get_global_styles() : array(); 407 } 408 409 $global_gallery_styles = $global_styles['blocks']['core/gallery'] ?? array(); 410 $global_gallery_gap = $global_gallery_styles['spacing']['blockGap'] ?? $fallback_gap; 411 $has_block_gap = is_array( $style_attr['spacing'] ?? null ) && array_key_exists( 'blockGap', $style_attr['spacing'] ); 412 // Prefer the block's own gap value, then Gallery global styles. Missing 413 // values fall back to the Gallery blockGap default. 414 $block_gap = $has_block_gap 415 ? $style_attr['spacing']['blockGap'] 416 : $global_gallery_gap; 417 $gap_column = block_core_gallery_get_column_gap_value( $block_gap, $fallback_gap ); 418 419 // Set the CSS variable to the column value for Gallery's flex width calculations. 420 $gallery_styles = array( 421 array( 422 'selector' => ".wp-block-gallery.{$unique_gallery_classname}", 423 'declarations' => array( 424 '--wp--style--unstable-gallery-gap' => $gap_column, 425 ), 426 ), 427 ); 428 429 $global_settings = wp_get_global_settings(); 430 $viewport_settings = $global_settings['viewport'] ?? null; 431 $responsive_media_queries = array(); 432 foreach ( array( 'WP_Theme_JSON_Gutenberg', 'WP_Theme_JSON' ) as $theme_json_class_name ) { 433 if ( method_exists( $theme_json_class_name, 'get_viewport_media_queries' ) ) { 434 $responsive_media_queries = $theme_json_class_name::get_viewport_media_queries( $viewport_settings ); 435 break; 436 } 437 } 438 439 foreach ( $responsive_media_queries as $breakpoint => $media_query ) { 440 $viewport_style = $style_attr[ $breakpoint ] ?? null; 441 $has_viewport_block_gap = is_array( $viewport_style ) && 442 is_array( $viewport_style['spacing'] ?? null ) && 443 array_key_exists( 'blockGap', $viewport_style['spacing'] ); 444 $has_global_viewport_block_gap = is_array( $global_gallery_styles[ $breakpoint ]['spacing'] ?? null ) && 445 array_key_exists( 'blockGap', $global_gallery_styles[ $breakpoint ]['spacing'] ); 446 447 // Viewport-specific block values win. Gallery global viewport values 448 // only apply when the block has no base gap, so they do not override an instance value. 449 if ( $has_viewport_block_gap ) { 450 $viewport_gap = $viewport_style['spacing']['blockGap']; 451 } elseif ( ! $has_block_gap && $has_global_viewport_block_gap ) { 452 $viewport_gap = $global_gallery_styles[ $breakpoint ]['spacing']['blockGap']; 453 } else { 454 continue; 455 } 456 457 if ( null === $viewport_gap ) { 458 continue; 459 } 460 461 $gallery_styles[] = array( 462 'selector' => ".wp-block-gallery.{$unique_gallery_classname}", 463 'declarations' => array( 464 '--wp--style--unstable-gallery-gap' => block_core_gallery_get_column_gap_value( 465 $viewport_gap, 466 $fallback_gap 467 ), 468 ), 469 'rules_group' => $media_query, 470 ); 471 } 472 473 wp_style_engine_get_stylesheet_from_css_rules( 474 $gallery_styles, 475 array( 'context' => 'block-supports' ) 476 ); 477 478 // The WP_HTML_Tag_Processor class calls get_updated_html() internally 479 // when the instance is treated as a string, but here we explicitly 480 // convert it to a string. 481 $updated_content = $processed_content->get_updated_html(); 482 483 /* 484 * Randomize the order of image blocks. Ideally we should shuffle 485 * the `$parsed_block['innerBlocks']` via the `render_block_data` hook. 486 * However, this hook doesn't apply inner block updates when blocks are 487 * nested. 488 * @todo In the future, if this hook supports updating innerBlocks in 489 * nested blocks, it should be refactored. 490 * 491 * @see: https://github.com/WordPress/gutenberg/pull/58733 492 */ 493 if ( ! empty( $attributes['randomOrder'] ) ) { 494 // This pattern matches figure elements with the `wp-block-image` 495 // class to avoid the gallery's wrapping `figure` element and 496 // extract images only. 497 $pattern = '/<figure[^>]*\bwp-block-image\b[^>]*>.*?<\/figure>/s'; 498 499 preg_match_all( $pattern, $updated_content, $matches ); 500 if ( $matches ) { 501 $image_blocks = $matches[0]; 502 shuffle( $image_blocks ); 503 504 $i = 0; 505 $updated_content = preg_replace_callback( 506 $pattern, 507 static function () use ( $image_blocks, &$i ) { 508 return $image_blocks[ $i++ ]; 509 }, 510 $updated_content 511 ); 512 } 513 } 514 515 // Gets all image IDs from the state that match this gallery's ID. 516 $state = wp_interactivity_state( 'core/image' ); 517 $gallery_id = $block->context['galleryId'] ?? null; 518 $image_ids = array(); 519 520 // Extracts image IDs from state metadata that match the current gallery ID. 521 if ( isset( $gallery_id ) && isset( $state['metadata'] ) ) { 522 foreach ( $state['metadata'] as $image_id => $metadata ) { 523 if ( isset( $metadata['galleryId'] ) && $metadata['galleryId'] === $gallery_id ) { 524 $image_ids[] = $image_id; 525 } 526 } 527 } 528 529 // If there are image IDs associated with this gallery, set interactivity 530 // attributes and order metadata for lightbox navigation. 531 if ( ! empty( $image_ids ) ) { 532 $total = count( $image_ids ); 533 $lightbox_index = 0; 534 $processor = new WP_HTML_Tag_Processor( $updated_content ); 535 $processor->next_tag(); 536 $processor->set_attribute( 'data-wp-interactive', 'core/gallery' ); 537 $processor->set_attribute( 538 'data-wp-context', 539 wp_json_encode( 540 array( 'galleryId' => $gallery_id ), 541 JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP 542 ) 543 ); 544 while ( $processor->next_tag( 'figure' ) ) { 545 $wp_key = $processor->get_attribute( 'data-wp-key' ); 546 if ( $wp_key && isset( $state['metadata'][ $wp_key ] ) ) { 547 $alt = $state['metadata'][ $wp_key ]['alt']; 548 wp_interactivity_state( 549 'core/image', 550 array( 551 'metadata' => array( 552 $wp_key => array( 553 'customAriaLabel' => empty( $alt ) 554 /* translators: %1$s: current image index, %2$s: total number of images */ 555 ? sprintf( __( 'Enlarged image %1$s of %2$s' ), $lightbox_index + 1, $total ) 556 /* translators: %1$s: current image index, %2$s: total number of images, %3$s: Image alt text */ 557 : sprintf( __( 'Enlarged image %1$s of %2$s: %3$s' ), $lightbox_index + 1, $total, $alt ), 558 /* translators: %1$s: current image index, %2$s: total number of images */ 559 'triggerButtonAriaLabel' => sprintf( __( 'Enlarge %1$s of %2$s' ), $lightbox_index + 1, $total ), 560 'order' => $lightbox_index, 561 ), 562 ), 563 ) 564 ); 565 ++$lightbox_index; 566 } 567 } 568 return $processor->get_updated_html(); 569 } 570 571 return $updated_content; 572 } 573 574 /** 575 * Registers the `core/gallery` block on server. 576 * 577 * @since 5.9.0 578 */ 579 function register_block_core_gallery() { 580 register_block_type_from_metadata( 581 __DIR__ . '/gallery', 582 array( 583 'render_callback' => 'block_core_gallery_render', 584 ) 585 ); 586 } 587 588 add_action( 'init', 'register_block_core_gallery' );
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