Add play_method

backend/experiment/rules/eurovision_2020.py

@@ -15,6 +15,7 @@ class Eurovision2020(Hooked):
     """
 
     ID = 'EUROVISION_2020'
+    play_method = 'BUFFER'
 
     def plan_sections(self, session):
         """Set the plan of tracks for a session.
@@ -114,6 +115,7 @@ def next_song_sync_action(self, session):
             key=key,
             section=section,
             title=self.get_trial_title(session, next_round_number),
+            config = {'play_method': self.play_method},
             result_id=result_id
         )
 
@@ -145,7 +147,7 @@ def next_heard_before_action(self, session):
 
         playback = Playback(
             [section],
-            play_config={'ready_time': 3, 'show_animation': True},
+            play_config={'ready_time': 3, 'show_animation': True, 'play_method': self.play_method},
             preload_message=_('Get ready!'))
         expected_result=int(novelty[next_round_number - 1] == 'old')
         # create Result object and save expected result to database