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② 後台搜尋「Zerosoft Upsell Engine for WooCommerce」→ 直接安裝（推薦）
原文外掛簡介
Zerosoft Upsell Engine for WooCommerce gives store owners two fully independent, fully free tools to show relevant products to shoppers:
1. Campaign Manager (rule-based)
Create manual upsell and cross-sell campaigns that target specific products, categories, or tags. Each campaign lets you hand-pick the recommended products and control exactly where and when they appear.
2. Smart Recommendations (automated)
A separate, standalone recommendation engine that automatically suggests products based on shared categories and tags. It runs independently from the Campaign Manager and is configured through its own dedicated settings page: WooCommerce -> Recommendation in the WordPress admin.
Both features are completely free and fully functional. There are no locked features, no upgrade prompts, and no premium tiers.
Campaign Manager Features
Create upsell campaigns (suggest higher-value alternatives) and cross-sell campaigns (suggest complementary products)
Trigger conditions: specific product, product category, or product tag
Display on product pages and/or the cart page
Choose the exact WooCommerce hook position for each page (e.g. after add-to-cart form, inside product summary, before/after cart totals)
Set campaign priority to control display order when multiple campaigns match
Enable or disable individual campaigns at any time
Browse and add recommended products by name search or by category
Smart Recommendations Features
Smart Recommendations is a fully independent feature with its own admin settings page (WooCommerce -> Recommendation). It is not part of the Campaign Manager and is configured separately.
Automatically suggests products based on shared product categories and tags
Scored relevance algorithm: exact category matches rank higher than related or accessory categories
Supports two recommendation sources: category-based and tag-based (either or both can be enabled)
Two display layouts: grid and slider/carousel
Configurable product limit (1-12 products)
Enable or disable display on product pages and cart pages independently
Configure the exact WooCommerce hook position for each page separately from campaign positions
Results are cached for performance using WordPress transients
Where Recommendations Appear
Both the Campaign Manager and Smart Recommendations support the following display positions:
Product page: After add-to-cart form (woocommerce_after_add_to_cart_form) or inside product summary (woocommerce_single_product_summary)
Cart page: Before cart totals (woocommerce_before_cart_totals) or after cart totals (woocommerce_after_cart_totals)
Campaign widgets and Smart Recommendation widgets are rendered separately. If a campaign matches the current page, it is shown first. Smart Recommendations fill in automatically when no matching campaign exists, or alongside campaigns depending on hook position.
Theme Compatibility
All frontend widgets inherit the active WooCommerce theme’s colours, fonts, and button styles where possible. No external stylesheets or scripts from third-party CDNs are loaded.
Source Code & Build
The plugin source code is included in this package.
For admin assets:
Build artifacts: admin-ui/build/admin-ui/index.js and admin-ui/build/admin-ui/index.css
Build metadata: admin-ui/build/admin-ui/index.asset.php
Build entrypoint/bootstrap file: admin-ui/admin-ui.php
For source visibility during review, matching source copies of the admin build assets are included in:
admin-ui/src/admin-ui/index.js
admin-ui/src/admin-ui/admin.css
admin-ui/src/admin-ui/App.js
admin-ui/src/admin-ui/api.js
admin-ui/src/admin-ui/components/Campaigns.js
To rebuild the admin UI from source:
Install Node.js (18+) and npm.
From the admin-ui/ directory, run:
npm ci
npm run build
The build command is defined in admin-ui/package.json as:
wp-scripts build src/admin-ui/index.js –output-path=build/admin-ui
Third-Party Libraries
The bundled admin UI is built with the following direct third-party packages, all included under GPL-compatible licenses:
@wordpress/i18n version 6.18.0 – License: GPL-2.0-or-later – Repository: https://github.com/WordPress/gutenberg/tree/trunk/packages/i18n
@wordpress/scripts version 31.8.0 – License: GPL-2.0-or-later – Repository: https://github.com/WordPress/gutenberg/tree/trunk/packages/scripts
Inline admin/frontend behaviour has been moved to enqueued assets in:
assets/css/upsell-smart-settings-admin.css
assets/js/upsell-smart-settings-admin.js
assets/js/upsell-frontend.js
assets/js/widget-bootstrap.js
assets/js/smart-recommendations.js
This plugin requires WooCommerce to be installed and active.
