Support retrieving merchant reference from CompletePurchaseResponse (#3)

Author: leith

src/Message/CompletePurchaseResponse.php

@@ -64,6 +64,16 @@ public function getTransactionReference()
         return $this->getKey('transaction_id');
     }
 
+    /**
+     * Get the merchant-supplied transaction identifier if available.
+     *
+     * @return null|string
+     */
+    public function getTransactionId()
+    {
+        return $this->getKey('req_reference_number');
+    }
+
     /**
      * Get the authorisation code if available.
      *

tests/Message/CompletePurchaseResponseTest.php

@@ -131,6 +131,7 @@ public function testCompletePurchaseSuccess()
         $this->assertTrue($this->response->isSuccessful());
         $this->assertFalse($this->response->isRedirect());
         $this->assertSame('1234567890123456789012', $this->response->getTransactionReference());
+        $this->assertSame('123abc', $this->response->getTransactionId());
         $this->assertSame('831000', $this->response->getAuthCode());
         $this->assertSame('100', $this->response->getReasonCode());
         $this->assertSame('Request was processed successfully.', $this->response->getMessage());