Glue for Yoast SEO & AMP - Version 0.1

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  • Initial version.
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Developer joostdevalk
Plugin Icon 128x128 Glue for Yoast SEO & AMP
Version 0.1
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  1. LICENSE +339 -0
  2. readme.txt +50 -0
  3. yoastseo-amp.php +147 -0
LICENSE ADDED
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+ {signature of Ty Coon}, 1 April 1989
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+ Ty Coon, President of Vice
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readme.txt ADDED
@@ -0,0 +1,50 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ === Glue for Yoast SEO & AMP ===
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+ Contributors: joostdevalk
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+ Tags: AMP, SEO
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+ Requires at least: 4.2
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+ Tested up to: 4.4
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+ Stable tag: 0.1
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+ License: GPLv2 or later
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+ License URI: http://www.gnu.org/licenses/gpl-2.0.html
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+
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+ This plugin makes sure the default WordPress AMP plugin uses the proper Yoast SEO metadata.
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+
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+ == Description ==
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+
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+ This plugin makes sure the default [WordPress AMP plugin](https://wordpress.org/plugins/amp/) uses the proper [Yoast SEO](https://wordpress.org/plugins/wordpress-seo/) metadata. Without this glue plugin things like canonical might go wrong.
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+
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+ This replaces the following values with Yoast SEO data, all in the JSON+LD data on posts:
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+
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+ * Organization name (uses the blog name by default, now replaced by the Company name from the SEO General settings, Your info tab)
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+ * Organization logo (uses the blog icon by default, now replaced by the Company logo from the SEO General settings, Your info tab)
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+ * Post canonical (replaced by the Yoast SEO canonical, usually the same but makes sure its consistent when changed through Yoast SEO)
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+ * Post image (uses the featured image by default, replaced by the Facebook image if one is set)
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+ * Post description (added from the meta description, if set, by default the WordPress AMP plugin doesn't add one)
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+
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+ > *Bugs? Ideas?*<br>
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+ > File them [on the GitHub repo for this plugin](https://github.com/Yoast/yoastseo-amp) please!
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+
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+ == Frequently Asked Questions ==
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+
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+ = How do I test whether it all works? =
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+
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+ Use Google's [Structured Data testing tool](https://developers.google.com/structured-data/testing-tool/) and enter the AMP URL of one of your posts.
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+
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+ = How do I change the Organization name or logo? =
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+
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+ Go to SEO -> General -> Your Info tab.
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+
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+ == Screenshots ==
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+
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+ 1. Screenshot of the structured data testing tool testing an AMP page with the Yoast SEO plugin and this glue plugin.
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+
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+ == Installation ==
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+
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+ 1. Upload the plugin files to the `/wp-content/plugins/yoast-seo-amp` directory, or install the plugin through the WordPress plugins screen directly.
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+ 1. Activate the plugin through the 'Plugins' screen in WordPress
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+ 1. You're done.
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+
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+ == Changelog ==
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+
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+ = 0.1 =
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+ * Initial version.
yoastseo-amp.php ADDED
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1
+ <?php
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+ /**
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+ * @package YoastSEO_AMP_Glue
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+ * @author Joost de Valk
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+ * @copyright 2016 Yoast BV
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+ * @license GPL-2.0+
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+ *
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+ * @wordpress-plugin
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+ * Plugin Name: Glue for Yoast SEO & AMP
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+ * Plugin URI: https://yoast.com/yoast-seo-amp-glue/
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+ * Description: Makes sure the default WordPress AMP plugin uses the proper Yoast SEO metadata
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+ * Version: 0.1
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+ * Author: Joost de Valk
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+ * Author URI: https://yoast.com
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+ */
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+
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+ /**
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+ * Defines the YoastSEO AMP class. In a wrapper function so we can overwrite this from within Yoast SEO later on.
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+ */
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+ function yoast_seo_amp_glue_define() {
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+ if ( ! class_exists( 'YoastSEO_AMP' ) ) {
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+ /**
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+ * This class improves upon the AMP output by the default WordPress AMP plugin using Yoast SEO metadata.
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+ */
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+ class YoastSEO_AMP {
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+
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+ /**
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+ * @var WPSEO_Frontend
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+ */
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+ private $front;
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+
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+ /**
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+ * @var array
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+ */
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+ private $options;
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+
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+ /**
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+ * YoastSEO_AMP constructor.
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+ */
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+ public function __construct() {
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+ $this->front = WPSEO_Frontend::get_instance();
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+ $this->options = WPSEO_Options::get_all();
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+
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+ add_filter( 'amp_post_template_data', array( $this, 'fix_amp_post_data' ), 10, 2 );
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+ add_filter( 'amp_post_template_metadata', array( $this, 'fix_amp_post_metadata' ), 10, 2 );
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+ }
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+
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+ /**
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+ * Fix the basic AMP post data
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+ *
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+ * @param array $data
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+ * @param object $post
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+ *
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+ * @return array
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+ */
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+ public function fix_amp_post_data( $data, $post ) {
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+ $data['canonical_url'] = $this->front->canonical( false );
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+
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+ return $data;
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+ }
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+
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+ /**
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+ * Fix the AMP metadata for a post
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+ *
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+ * @param array $metadata
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+ * @param object $post
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+ *
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+ * @return array
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+ */
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+ public function fix_amp_post_metadata( $metadata, $post ) {
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+ $this->build_organization_object( $metadata );
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+
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+ $desc = $this->front->metadesc( false );
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+ if ( $desc ) {
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+ $metadata['description'] = $desc;
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+ }
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+
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+ $og_img = $this->get_image_object( WPSEO_Meta::get_value( 'opengraph-image', $post->ID ) );
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+ if ( is_array( $og_img ) ) {
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+ $metadata['image'] = $og_img;
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+ }
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+
83
+ return $metadata;
84
+ }
85
+
86
+ /**
87
+ * Builds the organization object if needed.
88
+ *
89
+ * @param array $metadata
90
+ */
91
+ private function build_organization_object( &$metadata ) {
92
+ // While it's using the blog name, it's actually outputting the company name
93
+ if ( ! empty( $this->options['company_name'] ) ) {
94
+ $metadata['publisher']['name'] = $this->options['company_name'];
95
+ }
96
+
97
+ // The logo needs to be 600px wide max, 60px high max
98
+ $logo = $this->get_image_object( $this->options['company_logo'], array( 600, 60 ) );
99
+ if ( is_array( $logo ) ) {
100
+ $metadata['publisher']['logo'] = $logo;
101
+ }
102
+ }
103
+
104
+ /**
105
+ * Builds an image object array from an image URL
106
+ *
107
+ * @param string $image_url
108
+ * @param string|array $size Optional. Image size. Accepts any valid image size, or an array of width
109
+ * and height values in pixels (in that order). Default 'full'.
110
+ *
111
+ * @return bool|array
112
+ */
113
+ private function get_image_object( $image_url, $size = 'full' ) {
114
+ if ( empty( $image_url ) ) {
115
+ return false;
116
+ }
117
+
118
+ $image_id = attachment_url_to_postid( $image_url );
119
+ $image_src = wp_get_attachment_image_src( $image_id, $size );
120
+
121
+ if ( is_array( $image_src ) ) {
122
+ return array(
123
+ '@type' => 'ImageObject',
124
+ 'url' => $image_src[0],
125
+ 'width' => $image_src[1],
126
+ 'height' => $image_src[2]
127
+ );
128
+ }
129
+
130
+ return false;
131
+ }
132
+ }
133
+ }
134
+ }
135
+
136
+ add_action( 'plugins_loaded', 'yoast_seo_amp_glue_define', 99 );
137
+
138
+ /**
139
+ * Initialize the Yoast SEO AMP Glue plugin
140
+ */
141
+ function yoast_seo_amp_glue_init() {
142
+ if ( class_exists( 'WPSEO_Frontend' ) ) {
143
+ new YoastSEO_AMP();
144
+ }
145
+ }
146
+
147
+ add_action( 'init', 'yoast_seo_amp_glue_init', 12 );