Developer Overview
For developers extending the plugin. Store owners do not need this section.
Layout
Section titled “Layout”The plugin is one class per concern with a WOG_ / wog_ prefix. The main class Woo_Open_Graph boots and creates the others.
| Class | File | Job |
|---|---|---|
Woo_Open_Graph |
open-graph-for-woocommerce.php |
Bootstrap, WooCommerce check, upgrade routine, cache clearing, robots.txt line |
WOG_Settings |
includes/class-wog-settings.php |
Defaults, validation, one wog_settings option |
WOG_Meta_Tags |
includes/class-wog-meta-tags.php |
Open Graph and X card tags, SEO plugin detection |
WOG_Schema |
includes/class-wog-schema.php |
JSON-LD gap-fill, breadcrumb, organization, category, shop |
WOG_Social_Share |
includes/class-wog-social-share.php |
Share buttons, shortcode, share tracking |
WOG_Sitemap |
includes/class-wog-sitemap.php |
Sitemap rewrite rules, output, background jobs |
WOG_Meta_Boxes |
includes/class-wog-meta-boxes.php |
Product meta box and Social column |
WOG_Admin |
admin/class-wog-admin.php |
WB Plugins menu, tabs, settings screen, admin AJAX |
Constants
Section titled “Constants”| Constant | Value |
|---|---|
WOG_VERSION |
2.1.0 |
WOG_PLUGIN_FILE |
Path to the main plugin file |
WOG_PLUGIN_DIR |
Plugin directory path |
WOG_PLUGIN_URL |
Plugin directory URL |
Helper functions (includes/wog-functions.php)
Section titled “Helper functions (includes/wog-functions.php)”| Function | Returns |
|---|---|
wog() |
The Woo_Open_Graph instance |
wog_get_settings() |
The settings array |
wog_is_social_enabled_for_product( $product_id ) |
Whether social output is allowed for a product. Applies the wog_social_enabled_for_product filter. |
wog_get_fallback_image_url() |
Default Social Image, else the WooCommerce placeholder at the configured size |
wog_get_product_price_text( $product ) |
Price HTML, as a range for variable and grouped products whose prices differ |
wog_get_product_gtin( $product ), wog_get_product_mpn( $product ), wog_get_product_brand( $product ) |
Shared lookups used by the tag and schema classes |
Output order on a page
Section titled “Output order on a page”wp_headpriority 0: the tag class starts buffering the head.wp_headpriority 14: it scans the buffered head forog:*andtwitter:*tags already printed.wp_headpriority 15: it prints the missing tags betweenWoo Open Graph Meta Tagscomments.wp_headpriority 5 (only whileenable_schemais on): standalone JSON-LD blocks.
Rules every social output layer follows
Section titled “Rules every social output layer follows”Ask wog_is_social_enabled_for_product() before printing anything social for a product. JSON-LD is deliberately not gated by it.