UPD: added app to submit participant registrations.

dav_registration/signals.py

@@ -0,0 +1,20 @@
+from django.dispatch import Signal
+
+from . import emails
+
+registration_created = Signal(providing_args=['registration'])
+
+
+def send_emails_on_registration(sender, **kwargs):
+    registration = kwargs.get('registration')
+
+    # Inform the event owner (trainer)
+    recipient = registration.event.owner
+    email = emails.InformTrainerRegistrationMail(recipient=recipient, registration=registration)
+    email.send()
+
+    # Inform the potential participant
+    recipient = u'"{fullname}" <{email}>'.format(fullname=registration.get_full_name(),
+                                                 email=registration.email_address)
+    email = emails.InformSelfRegistrationMail(recipient=recipient, registration=registration)
+    email.send()