init

wp-includes/blocks/image.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Server-side rendering of the `core/image` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/image` block on the server,
+ * adding a data-id attribute to the element if core/gallery has added on pre-render.
+ *
+ * @param  array $attributes The block attributes.
+ * @param  array $content    The block content.
+ * @return string Returns the block content with the data-id attribute added.
+ */
+function render_block_core_image( $attributes, $content ) {
+	if ( isset( $attributes['data-id'] ) ) {
+		// Add the data-id="$id" attribute to the img element
+		// to provide backwards compatibility for the Gallery Block,
+		// which now wraps Image Blocks within innerBlocks.
+		// The data-id attribute is added in a core/gallery `render_block_data` hook.
+		$data_id_attribute = 'data-id="' . esc_attr( $attributes['data-id'] ) . '"';
+		if ( ! strpos( $content, $data_id_attribute ) ) {
+			$content = str_replace( '<img', '<img ' . $data_id_attribute . ' ', $content );
+		}
+	}
+	return $content;
+}
+
+
+/**
+ * Registers the `core/image` block on server.
+ */
+function register_block_core_image() {
+	register_block_type_from_metadata(
+		__DIR__ . '/image',
+		array(
+			'render_callback' => 'render_block_core_image',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_image' );