WordPress AMP 页面结构化数据提示 logo 和 image 错误

WordPress 启用 AMP，使用 Google 结构化数据测试工具检测页面可能会提示 logo 和 image 错误。image 错误很容易解决：文章设置一张特色图片就行。logo 错误目前应该要修改 amp 插件代码才行。

Google 文档：文章机构化数据规范

测试工具：结构化数据测试工具

老头没有设置特色图片，每一篇文章设置是不可能的，可以用插件（Default featured image）设置，不过老头选择了直接修改插件文件。

相关代码在：\amp\includes\amp-helper-functions.php 文件，amp_get_schemaorg_metadata() 函数。修改后代码：

function amp_get_schemaorg_metadata() {
	$metadata = [
		'@context'  => 'http://schema.org',
		'publisher' => [
			'@type' => 'Organization',
			'name'  => get_bloginfo( 'name' ),
		],
	];

	$metadata['publisher']['logo']['@type'] = "ImageObject";
	$metadata['publisher']['logo']['url'] = get_bloginfo('template_directory').'/img/apple-touch-icon.png';

	$post = get_queried_object();
	if ( $post instanceof WP_Post ) {
		$metadata = array_merge(
			$metadata,
			[
				'@type'            => is_page() ? 'WebPage' : 'BlogPosting',
				'mainEntityOfPage' => get_permalink(),
				'headline'         => get_the_title(),
				'datePublished'    => mysql2date( 'c', $post->post_date_gmt, false ),
				'dateModified'     => mysql2date( 'c', $post->post_modified_gmt, false ),
			]
		);

		$post_author = get_userdata( $post->post_author );
		if ( $post_author ) {
			$metadata['author'] = [
				'@type' => 'Person',
				'name'  => html_entity_decode( $post_author->display_name, ENT_QUOTES, get_bloginfo( 'charset' ) ),
			];
		}
		
		if ( get_post_meta(get_the_ID(), 'thumbnails-120', true) ) {
			$post_image_meta = [
				'@type'  => 'ImageObject',
				'url'    => get_post_meta(get_the_ID(), 'thumbnails-120', true),
				'width'  => "120px",
				'height' => "120px",
			];
		} else {
			$post_image_meta = [
				'@type'  => 'ImageObject',
				'url'    => get_bloginfo('template_directory').'/img/random/thums-'.sprintf( "%02d", rand( 1, 12 ) ).'.png',
				'width'  => "120px",
				'height' => "120px",
			];
		}
		$metadata['image'] = $post_image_meta['url'];

		/**
		 * Filters Schema.org metadata for a post.
		 *
		 * The 'post_template' in the filter name here is due to this filter originally being introduced in `AMP_Post_Template`.
		 * In general the `amp_schemaorg_metadata` filter should be used instead.
		 *
		 * @since 0.3
		 *
		 * @param array   $metadata Metadata.
		 * @param WP_Post $post     Post.
		 */
		$metadata = apply_filters( 'amp_post_template_metadata', $metadata, $post );
	}

	/**
	 * Filters Schema.org metadata for a query.
	 *
	 * Check the the main query for the context for which metadata should be added.
	 *
	 * @since 0.7
	 *
	 * @param array   $metadata Metadata.
	 */
	$metadata = apply_filters( 'amp_schemaorg_metadata', $metadata );

	return $metadata;
}

请根据实际修改红色字体部分内容。

也可以到 Google Search Console - AMP 检查是否有错误。

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