Fixed #46 -- Added a plugin to send out emails

src/pretix/base/services/mail.py

@@ -1,22 +1,27 @@
 import logging
 from django.conf import settings
 from django.core.mail import EmailMessage
+from django.core.urlresolvers import reverse
 from django.template.loader import get_template
 from django.utils import translation
+from django.utils.translation import ugettext as _
 
+from pretix.base.i18n import LazyI18nString
 from pretix.base.models import User, Event
+from pretix.helpers.urls import build_absolute_uri
 
 logger = logging.getLogger('pretix.base.mail')
 
 
-def mail(user: User, subject: str, template: str, context: dict, event: Event=None):
+def mail(user: User, subject: str, template: str, context: dict=None, event: Event=None):
     """
     Sends out an email to a user.
 
     :param user: The user this should be sent to.
     :param subject: The e-mail subject. Should be localized.
     :param template: The filename of a template to be used. It will
-                     be rendered with the recipient's locale.
+                     be rendered with the recipient's locale. Alternatively, you
+                     can pass a LazyI18nString and leave ``context`` empty
     :param context: The context for rendering the template.
     :param event: The event, used for determining the sender of the e-mail
 
@@ -31,8 +36,11 @@ def mail(user: User, subject: str, template: str, context: dict, event: Event=No
     _lng = translation.get_language()
     translation.activate(user.locale or settings.LANGUAGE_CODE)
 
-    tpl = get_template(template)
-    body = tpl.render(context)
+    if isinstance(template, LazyI18nString):
+        body = str(template)
+    else:
+        tpl = get_template(template)
+        body = tpl.render(context)
 
     sender = event.settings.get('mail_from') if event else settings.MAIL_FROM
 
@@ -41,6 +49,23 @@ def mail(user: User, subject: str, template: str, context: dict, event: Event=No
     if prefix:
         subject = "[%s] %s" % (prefix, subject)
 
+    body += "\r\n\r\n----\r\n"
+    body += _(
+        "You are receiving this e-mail because you placed an order for %s." % event.name
+    )
+    body += "\r\n"
+    body += _(
+        "You can view all of your orders at the following URL:"
+    )
+    body += "\r\n"
+    body += build_absolute_uri(
+        'presale:event.orders', kwargs={
+            'event': event.slug,
+            'organizer': event.organizer.slug
+        }
+    )
+    body += "\r\n"
+
     email = EmailMessage(
         subject, body, sender,
         to=[user.email]