parse OutcomeRequest result data

Author: hmoffatt

src/lti/outcome_request.py

@@ -168,6 +168,16 @@ def process_xml(self, xml):
                 sourcedGUID.sourcedId
             self.score = str(result.resultRecord.result.
                              resultScore.textString)
+
+            if hasattr(result.resultRecord.result, 'resultData'):
+                resultData = result.resultRecord.result.resultData
+                if hasattr(resultData, 'text'):
+                    self.result_data = {'text': resultData.text}
+                elif hasattr(resultData, 'url'):
+                    self.result_data = {'url': resultData.url}
+                elif hasattr(resultData, 'ltiLaunchUrl'):
+                    self.result_data = {'ltiLaunchUrl': resultData.ltiLaunchUrl}
+
         except:
             pass