1 files changed, 114 insertions, 0 deletions
diff --git a/wp-includes/blocks/post-terms.php b/wp-includes/blocks/post-terms.php
new file mode 100644
index 0000000..c97155b
--- /dev/null
+++ b/wp-includes/blocks/post-terms.php
@@ -0,0 +1,114 @@
+<?php
+/**
+ * Server-side rendering of the `core/post-terms` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/post-terms` block on the server.
+ *
+ * @param array    $attributes Block attributes.
+ * @param string   $content    Block default content.
+ * @param WP_Block $block      Block instance.
+ * @return string Returns the filtered post terms for the current post wrapped inside "a" tags.
+ */
+function render_block_core_post_terms( $attributes, $content, $block ) {
+	if ( ! isset( $block->context['postId'] ) || ! isset( $attributes['term'] ) ) {
+		return '';
+	}
+
+	if ( ! is_taxonomy_viewable( $attributes['term'] ) ) {
+		return '';
+	}
+
+	$post_terms = get_the_terms( $block->context['postId'], $attributes['term'] );
+	if ( is_wp_error( $post_terms ) || empty( $post_terms ) ) {
+		return '';
+	}
+
+	$classes = array( 'taxonomy-' . $attributes['term'] );
+	if ( isset( $attributes['textAlign'] ) ) {
+		$classes[] = 'has-text-align-' . $attributes['textAlign'];
+	}
+	if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
+		$classes[] = 'has-link-color';
+	}
+
+	$separator = empty( $attributes['separator'] ) ? ' ' : $attributes['separator'];
+
+	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) );
+
+	$prefix = "<div $wrapper_attributes>";
+	if ( isset( $attributes['prefix'] ) && $attributes['prefix'] ) {
+		$prefix .= '<span class="wp-block-post-terms__prefix">' . $attributes['prefix'] . '</span>';
+	}
+
+	$suffix = '</div>';
+	if ( isset( $attributes['suffix'] ) && $attributes['suffix'] ) {
+		$suffix = '<span class="wp-block-post-terms__suffix">' . $attributes['suffix'] . '</span>' . $suffix;
+	}
+
+	return get_the_term_list(
+		$block->context['postId'],
+		$attributes['term'],
+		wp_kses_post( $prefix ),
+		'<span class="wp-block-post-terms__separator">' . esc_html( $separator ) . '</span>',
+		wp_kses_post( $suffix )
+	);
+}
+
+/**
+ * Registers the `core/post-terms` block on the server.
+ */
+function register_block_core_post_terms() {
+	$taxonomies = get_taxonomies(
+		array(
+			'publicly_queryable' => true,
+			'show_in_rest'       => true,
+		),
+		'objects'
+	);
+
+	// Split the available taxonomies to `built_in` and custom ones,
+	// in order to prioritize the `built_in` taxonomies at the
+	// search results.
+	$built_ins         = array();
+	$custom_variations = array();
+
+	// Create and register the eligible taxonomies variations.
+	foreach ( $taxonomies as $taxonomy ) {
+		$variation = array(
+			'name'        => $taxonomy->name,
+			'title'       => $taxonomy->label,
+			'description' => sprintf(
+				/* translators: %s: taxonomy's label */
+				__( 'Display a list of assigned terms from the taxonomy: %s' ),
+				$taxonomy->label
+			),
+			'attributes'  => array(
+				'term' => $taxonomy->name,
+			),
+			'isActive'    => array( 'term' ),
+			'scope'       => array( 'inserter', 'transform' ),
+		);
+		// Set the category variation as the default one.
+		if ( 'category' === $taxonomy->name ) {
+			$variation['isDefault'] = true;
+		}
+		if ( $taxonomy->_builtin ) {
+			$built_ins[] = $variation;
+		} else {
+			$custom_variations[] = $variation;
+		}
+	}
+
+	register_block_type_from_metadata(
+		__DIR__ . '/post-terms',
+		array(
+			'render_callback' => 'render_block_core_post_terms',
+			'variations'      => array_merge( $built_ins, $custom_variations ),
+		)
+	);
+}
+add_action( 'init', 'register_block_core_post_terms' );