pretixdroid: Add Check-Ins to log

src/pretix/plugins/pretixdroid/signals.py

@@ -1,6 +1,9 @@
+import json
+
 from django.core.urlresolvers import resolve, reverse
 from django.dispatch import receiver
 from django.utils.translation import ugettext_lazy as _
+from pretix.base.signals import logentry_display
 
 from pretix.control.signals import nav_event
 
@@ -21,3 +24,19 @@ def control_nav_import(sender, request=None, **kwargs):
             'icon': 'android',
         }
     ]
+
+
+@receiver(signal=logentry_display, dispatch_uid="pretixdroid_logentry_display")
+def pretixcontrol_logentry_display(sender, logentry, **kwargs):
+    if logentry.action_type != 'pretix.plugins.pretixdroid.scan':
+        return
+
+    data = json.loads(logentry.data)
+    if data.get('first'):
+        return _('Position #{posid} has been scanned.'.format(
+            posid=data.get('positionid')
+        ))
+    else:
+        return _('Position #{posid} has been scanned and rejected because it has already been scanned before.'.format(
+            posid=data.get('positionid')
+        ))