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Solidgate Payment Gateway for WooCommerce

Solidgate Payment Gateway for WooCommerce

By Solidgate
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Description

Solidgate Payment Gateway for WooCommerce integrates the Solidgate payment platform into your WooCommerce store. Customers can pay by credit or debit card directly on your checkout page using an embedded payment form, or be redirected to a Solidgate-hosted payment page.

The plugin supports both the classic WooCommerce checkout and the modern Gutenberg block-based checkout out of the box.

Key features

  • Embedded payment form — card fields and APM buttons appear inline on checkout inside a modal overlay, no redirect required.
  • Hosted payment page — redirect customers to a Solidgate-hosted page to complete payment.
  • Classic and block checkout — fully compatible with both the legacy WooCommerce checkout and the WooCommerce Blocks (Gutenberg) checkout.
  • BLIK — automatically rendered for PLN orders with a Poland billing address.
  • MB Way — automatically rendered for EUR orders with a Portugal billing address.
  • Bizum — automatically rendered for EUR orders with a Spain billing address.
  • Webhook-based order updates — order status (authorized, settled, declined, refunded) is updated in real time via Solidgate webhooks.
  • Refunds from WooCommerce admin — issue full or partial refunds directly from the order screen.
  • HPOS compatible — fully supports WooCommerce High-Performance Order Storage (custom order tables).
  • Logging — optional debug logging to the WooCommerce log for troubleshooting.

How APMs work

BLIK, MB Way, and Bizum buttons are rendered automatically by the Solidgate SDK when the order currency and the customer’s billing country match the APM requirements. No extra configuration is needed — the SDK silently ignores button containers when conditions are not met, so enabling all three APMs has no visual impact on customers who are not eligible for them.

Third-Party Service

This plugin connects to the Solidgate payment platform (https://solidgate.com) to process payments. Solidgate is a third-party service — by using this plugin you are subject to their terms and privacy policy.

What data is sent to Solidgate:

  • Order details: amount, currency, order ID
  • Customer billing country and email address (used for payment form pre-fill and APM eligibility)
  • Payment method data entered by the customer inside the Solidgate-hosted iframe (card numbers are never processed by your server)
  • Webhook signatures sent from Solidgate to your site to confirm payment status

When data is sent: Data is transmitted at checkout when the customer initiates payment, and via webhooks when Solidgate sends order status updates (authorised, settled, declined, refunded).

  • Solidgate Terms of Service: https://solidgate.com/terms/
  • Solidgate Privacy Policy: https://solidgate.com/privacy-policy/

Requirements

  • WordPress 5.6 or later
  • WooCommerce 6.0 or later
  • PHP 7.4 or later
  • A Solidgate merchant account — sign up at solidgate.com

Installation

  1. Upload the solidgate-for-woocommerce folder to /wp-content/plugins/, or install via Plugins > Add New in WordPress admin.
  2. Activate the plugin through the Plugins screen.
  3. Go to WooCommerce > Settings > Payments and click Set up next to “Solidgate Payment Gateway for WooCommerce”.
  4. Enter your credentials from the Solidgate merchant dashboard:
    • Public Key
    • Private Key
    • Webhook Public Key
    • Webhook Private Key
  5. Choose your integration type: Integrated form or Payment page.
  6. In the Solidgate dashboard, set your webhook URL to:
    https://yoursite.com/?wc-api=solid_hook

FAQ

Where do I get my API keys?

Log in to your Solidgate merchant dashboard and navigate to Settings > API Keys.

What is the difference between “Integrated form” and “Payment page”?

With Integrated form, the Solidgate payment form appears directly on your WooCommerce checkout page inside a modal overlay — customers never leave your site. With Payment page, customers are redirected to a Solidgate-hosted page to complete payment and then returned to your store.

How do I set up the webhook?

In your Solidgate merchant dashboard, add a webhook endpoint pointing to https://yoursite.com/?wc-api=solid_hook. Solidgate will send order status events (authorize, settle, decline, refund) to this URL, and the plugin will update the corresponding WooCommerce order automatically.

Does the plugin support refunds?

Yes. You can issue full or partial refunds directly from the WooCommerce order screen (WooCommerce > Orders > [order] > Refund). The plugin calls the Solidgate refund API automatically.

Which countries and currencies are supported for APMs?

  • BLIK — PLN (Polish Zloty), billing country: Poland
  • MB Way — EUR, billing country: Portugal
  • Bizum — EUR, billing country: Spain

APM buttons appear automatically when the order matches the required currency and country. No extra configuration is needed.

Is the plugin compatible with WooCommerce HPOS?

Yes. The plugin declares compatibility with WooCommerce High-Performance Order Storage (custom order tables) and uses wc_get_orders() for all order lookups.

Does the plugin work with the block-based checkout?

Yes. The plugin registers a WooCommerce Blocks payment method integration via AbstractPaymentMethodType. The embedded form renders in a React portal appended to document.body, which prevents it from being dimmed by WooCommerce’s checkout processing overlay.

Is PCI compliance maintained?

Yes. Card data is entered directly inside a Solidgate-hosted iframe served from cdn.solidgate.com. Your server never handles raw card numbers.

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Contributors & Developers

“Solidgate Payment Gateway for WooCommerce” is open source software. The following people have contributed to this plugin.

Contributors

Translate “Solidgate Payment Gateway for WooCommerce” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

2.4.0

  • Fixed: Plugin slug renamed to solidgate-for-woocommerce for WP.org compliance.
  • Fixed: Plugin name updated to “Solidgate Payment Gateway for WooCommerce”.
  • Fixed: Text domain updated throughout to match plugin slug.
  • Fixed: jQuery Modal bundled locally — removed CDN dependency.
  • Fixed: $_POST['solid_token'] now uses wp_unslash() before sanitization.
  • Fixed: $_GET['order_id'] validated with isset() before use in callbacks.
  • Fixed: print_r() replaced with wp_json_encode() in all log calls.
  • Fixed: Missing translators comments added to all sprintf/__() calls.
  • Fixed: Removed load_plugin_textdomain() (auto-loaded since WP 4.6).
  • Fixed: Webhook nonce check suppressed with explanation (server-to-server, no WP nonce).
  • Fixed: Slow DB query phpcs notices suppressed with explanation.
  • Added: License and License URI headers.
  • Added: readme.txt and composer.json.

2.3.0

  • Added: BLIK, MB Way, and Bizum APM support for classic and block checkout.
  • Added: geo_country (ISO 3166-1 alpha-3) in order body for APM auto-rendering.
  • Added: future_usage: { payment_type: one-time } globally (required by MB Way and Bizum).
  • Fixed: APM container divs now output inline in payment_fields() for classic checkout.

2.2.0

  • Added: WooCommerce Block checkout support via AbstractPaymentMethodType.
  • Added: REST endpoint /wp-json/solid/v1/init for pre-order payment initialization.
  • Added: React portal overlay for block checkout (bypasses WC processing-state opacity).
  • Added: Billing email and country pre-filled in Solidgate form from WC store data.

2.1.0

  • Initial public release.

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