Allow “locale” parameter

CHANGELOG.md

@@ -2,7 +2,11 @@
 
 ## Unreleased
 
-- Added string error message when an error occurs after the submitting payment information to PayPal Checkout.
+### Added
+- Added the `locale` parameter for when customizing the PayPal SDK script. ([#123](https://github.com/craftcms/commerce-paypal-checkout/pull/35))
+
+### Fixed
+- Fixed a bug where Commerce payment errors weren’t being returned
 
 ### Fixed
 - Fixed a bug where the PayPal Checkout gateway was incorrectly showing in the available gateways list for CP payments. ([#30](https://github.com/craftcms/commerce-paypal-checkout/issues/30))

README.md

@@ -85,7 +85,7 @@ This is required when paying with an alternative payment currency due to the int
 
 This gateway allows the passing of certain query string parameters, at runtime, as specified in the [PayPal documentation](https://developer.paypal.com/docs/checkout/reference/customize-sdk/#query-parameters).
 
-THe allowed parameters are `currency` (as detailed above), `disable-card` and `disable-funding`.
+The allowed parameters are `currency` (as detailed above), `disable-card`, `disable-funding` and `locale`.
 
 As an example to disable PayPal credit funding you could output the payment form as follows:
 
@@ -95,4 +95,4 @@ As an example to disable PayPal credit funding you could output the payment form
   'disable-funding': 'credit'
   ...
 }) }}
-```
+```

src/gateways/Gateway.php

@@ -740,6 +740,7 @@ private function _sdkQueryParameters(Array $passedParams): string
             'currency',
             'disable-card',
             'disable-funding',
+            'locale',
         ];
         $intent = strtolower(self::PAYMENT_TYPES[$this->paymentType]);
         $params = [