Add option to send emails to attendees (#1833)

src/pretix/control/forms/orders.py

@@ -517,6 +517,20 @@ class OrderMailForm(forms.Form):
         self._set_field_placeholders('message', ['event', 'order'])
 
 
+class OrderPositionMailForm(OrderMailForm):
+    def __init__(self, *args, **kwargs):
+        position = self.position = kwargs.pop('position')
+        super().__init__(*args, **kwargs)
+        self.fields['sendto'].initial = position.attendee_email
+        self.fields['message'] = forms.CharField(
+            label=_("Message"),
+            required=True,
+            widget=forms.Textarea,
+            initial=self.order.event.settings.mail_text_order_custom_mail.localize(self.order.locale),
+        )
+        self._set_field_placeholders('message', ['event', 'order', 'position'])
+
+
 class OrderRefundForm(forms.Form):
     action = forms.ChoiceField(
         required=False,

src/pretix/control/templates/pretixcontrol/order/index.html

@@ -182,7 +182,7 @@
                             {{ order.email|default_if_none:"" }}
                             {% if order.email and order.email_known_to_work %}
                                 <span class="fa fa-check-circle text-success" data-toggle="tooltip" title="{% trans "We know that this email address works because the user clicked a link we sent them." %}"></span>
-                            {% endif %}&nbsp;&nbsp;
+                            {% endif %}
                             <a href="{% url "control:event.order.contact" event=request.event.slug organizer=request.event.organizer.slug code=order.code %}" class="btn btn-default btn-xs">
                                 <span class="fa fa-edit"></span>
                             </a>
@@ -388,8 +388,12 @@
                                                     {{ line.attendee_email }}
                                                     {% if not line.addon_to %}
                                                         <form class="form-inline helper-display-inline" method="post"
-                                                                action="{% url "control:event.order.resendlink" event=request.event.slug organizer=request.event.organizer.slug code=order.code position=line.pk %}">
+                                                              action="{% url "control:event.order.resendlink" event=request.event.slug organizer=request.event.organizer.slug code=order.code position=line.pk %}">
                                                             {% csrf_token %}
+                                                            <a href="{% url "control:event.order.position.sendmail" event=request.event.slug organizer=request.event.organizer.slug code=order.code position=line.pk %}"
+                                                               class="btn btn-default btn-xs">
+                                                                <span class="fa fa-envelope-o"></span>
+                                                            </a>
                                                             <button class="btn btn-default btn-xs">
                                                                 {% trans "Resend link" %}
                                                             </button>

src/pretix/control/urls.py

@@ -253,6 +253,8 @@ urlpatterns = [
             name='event.order.info'),
         url(r'^orders/(?P<code>[0-9A-Z]+)/sendmail$', orders.OrderSendMail.as_view(),
             name='event.order.sendmail'),
+        url(r'^orders/(?P<code>[0-9A-Z]+)/(?P<position>[0-9A-Z]+)/sendmail$', orders.OrderPositionSendMail.as_view(),
+            name='event.order.position.sendmail'),
         url(r'^orders/(?P<code>[0-9A-Z]+)/mail_history$', orders.OrderEmailHistory.as_view(),
             name='event.order.mail_history'),
         url(r'^orders/(?P<code>[0-9A-Z]+)/payments/(?P<payment>\d+)/cancel$', orders.OrderPaymentCancel.as_view(),

src/pretix/control/views/orders.py

@@ -80,8 +80,8 @@ from pretix.control.forms.orders import (
     CancelForm, CommentForm, ConfirmPaymentForm, EventCancelForm, ExporterForm,
     ExtendForm, MarkPaidForm, OrderContactForm, OrderFeeChangeForm,
     OrderLocaleForm, OrderMailForm, OrderPositionAddForm,
-    OrderPositionAddFormset, OrderPositionChangeForm, OrderRefundForm,
+    OrderPositionAddFormset, OrderPositionChangeForm, OrderPositionMailForm,
-    OtherOperationsForm,
+    OrderRefundForm, OtherOperationsForm,
 )
 from pretix.control.permissions import EventPermissionRequiredMixin
 from pretix.control.views import PaginationMixin
@@ -1783,6 +1783,57 @@ class OrderSendMail(EventPermissionRequiredMixin, OrderViewMixin, FormView):
         return ctx
 
 
+class OrderPositionSendMail(OrderSendMail):
+    form_class = OrderPositionMailForm
+
+    def get_form_kwargs(self):
+        kwargs = super().get_form_kwargs()
+        kwargs['position'] = get_object_or_404(
+            OrderPosition,
+            order__event=self.request.event,
+            order__code=self.kwargs['code'].upper(),
+            pk=self.kwargs['position'],
+            attendee_email__isnull=False
+        )
+        return kwargs
+
+    def form_valid(self, form):
+        position = get_object_or_404(
+            OrderPosition,
+            order__event=self.request.event,
+            order__code=self.kwargs['code'].upper(),
+            pk=self.kwargs['position'],
+            attendee_email__isnull=False
+        )
+        self.preview_output = {}
+        with language(position.order.locale):
+            email_context = get_email_context(event=position.order.event, order=position.order, position=position)
+        email_template = LazyI18nString(form.cleaned_data['message'])
+        email_subject = str(form.cleaned_data['subject']).format_map(TolerantDict(email_context))
+        email_content = render_mail(email_template, email_context)
+        if self.request.POST.get('action') == 'preview':
+            self.preview_output = {
+                'subject': _('Subject: {subject}').format(subject=email_subject),
+                'html': markdown_compile_email(email_content)
+            }
+            return self.get(self.request, *self.args, **self.kwargs)
+        else:
+            try:
+                position.send_mail(
+                    form.cleaned_data['subject'],
+                    email_template,
+                    email_context,
+                    'pretix.event.order.position.email.custom_sent',
+                    self.request.user
+                )
+                messages.success(self.request,
+                                 _('Your message has been queued and will be sent to {}.'.format(position.attendee_email)))
+            except SendMailException:
+                messages.error(self.request,
+                               _('Failed to send mail to the following user: {}'.format(position.attendee_email)))
+            return super(OrderSendMail, self).form_valid(form)
+
+
 class OrderEmailHistory(EventPermissionRequiredMixin, OrderViewMixin, ListView):
     template_name = 'pretixcontrol/order/mail_history.html'
     permission = 'can_view_orders'

src/tests/control/test_permissions.py

@@ -117,6 +117,8 @@ event_urls = [
     "orders/ABC/refunds/1/process",
     "orders/ABC/refunds/1/done",
     "orders/ABC/delete",
+    "orders/ABC/sendmail",
+    "orders/ABC/1/sendmail",
     "orders/ABC/",
     "orders/",
     "orders/import/",
@@ -290,6 +292,8 @@ event_permission_urls = [
     ("can_change_orders", "orders/FOO/delete", 302),
     ("can_change_orders", "orders/FOO/comment", 405),
     ("can_change_orders", "orders/FOO/locale", 200),
+    ("can_change_orders", "orders/FOO/sendmail", 200),
+    ("can_change_orders", "orders/FOO/1/sendmail", 404),
     ("can_change_orders", "orders/import/", 200),
     ("can_change_orders", "orders/import/0ab7b081-92d3-4480-82de-2f8b056fd32f/", 404),
     ("can_view_orders", "orders/FOO/answer/5/", 404),