Allow admin to manually change order email

src/pretix/control/forms/orders.py

@@ -88,3 +88,9 @@ class OrderPositionChangeForm(forms.Form):
     def clean(self):
         if self.cleaned_data.get('operation') == 'price' and not self.cleaned_data.get('price', '') != '':
             raise ValidationError(_('You need to enter a price if you want to change the product price.'))
+
+
+class OrderContactForm(forms.ModelForm):
+    class Meta:
+        model = Order
+        fields = ['email']

src/pretix/control/logdisplay.py

@@ -59,6 +59,8 @@ def pretixcontrol_logentry_display(sender: Event, logentry: LogEntry, **kwargs):
         'pretix.event.order.invoice.regenerated': _('The invoice has been regenerated.'),
         'pretix.event.order.invoice.reissued': _('The invoice has been reissued.'),
         'pretix.event.order.comment': _('The order\'s internal comment has been updated.'),
+        'pretix.event.order.contact.changed': _('The email address has been changed.'),
+        'pretix.event.order.payment.changed': _('The payment method has been changed.'),
     }
     if logentry.action_type in plains:
         return plains[logentry.action_type]

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

@@ -0,0 +1,27 @@
+{% extends "pretixcontrol/event/base.html" %}
+{% load i18n %}
+{% load bootstrap3 %}
+{% block title %}
+    {% trans "Change contact information" %}
+{% endblock %}
+{% block content %}
+    <h1>
+        {% trans "Change contact information" %}
+    </h1>
+
+    <form method="post" class="form-horizontal" href="">
+        {% csrf_token %}
+        <input type="hidden" name="status" value="c" />
+        {% bootstrap_form form layout='horizontal' %}
+        <div class="form-group submit-group">
+            <a class="btn btn-default btn-lg"
+                    href="{% url "control:event.order" event=request.event.slug organizer=request.event.organizer.slug code=order.code %}">
+                {% trans "Cancel" %}
+            </a>
+            <button class="btn btn-primary btn-save btn-lg" type="submit">
+                {% trans "Save" %}
+            </button>
+            <div class="clearfix"></div>
+        </div>
+    </form>
+{% endblock %}

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

@@ -91,6 +91,9 @@
                         <dt>{% trans "User" %}</dt>
                         <dd>
                             {{ order.email }}&nbsp;&nbsp;
+                            <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>
                             {% if order.status != "c" %}
                                 <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 %}">

src/pretix/control/urls.py

@@ -81,6 +81,8 @@ urlpatterns = [
             name='event.order.reissueinvoice'),
         url(r'^orders/(?P<code>[0-9A-Z]+)/extend$', orders.OrderExtend.as_view(),
             name='event.order.extend'),
+        url(r'^orders/(?P<code>[0-9A-Z]+)/contact$', orders.OrderContactChange.as_view(),
+            name='event.order.contact'),
         url(r'^orders/(?P<code>[0-9A-Z]+)/comment$', orders.OrderComment.as_view(),
             name='event.order.comment'),
         url(r'^orders/(?P<code>[0-9A-Z]+)/change$', orders.OrderChange.as_view(),

src/pretix/control/views/orders.py

@@ -32,7 +32,8 @@ from pretix.base.signals import (
     register_ticket_outputs,
 )
 from pretix.control.forms.orders import (
-    CommentForm, ExporterForm, ExtendForm, OrderPositionChangeForm,
+    CommentForm, ExporterForm, ExtendForm, OrderContactForm,
+    OrderPositionChangeForm,
 )
 from pretix.control.permissions import EventPermissionRequiredMixin
 from pretix.multidomain.urlreverse import build_absolute_uri
@@ -536,6 +537,34 @@ class OrderChange(OrderView):
         return self.get(*args, **kwargs)
 
 
+class OrderContactChange(OrderView):
+    permission = 'can_change_orders'
+    template_name = 'pretixcontrol/order/change_contact.html'
+
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data()
+        ctx['form'] = self.form
+        return ctx
+
+    @cached_property
+    def form(self):
+        return OrderContactForm(
+            instance=self.order,
+            data=self.request.POST if self.request.method == "POST" else None
+        )
+
+    def post(self, *args, **kwargs):
+        if self.form.is_valid():
+            self.order.log_action('pretix.event.order.contact.changed', {
+                'old_email': self.order.email,
+                'new_email': self.form.cleaned_data['email']
+            })
+            self.form.save()
+            messages.success(self.request, _('The order has been changed.'))
+            return redirect(self.get_order_url())
+        return self.get(*args, **kwargs)
+
+
 class OverView(EventPermissionRequiredMixin, TemplateView):
     template_name = 'pretixcontrol/orders/overview.html'
     permission = 'can_view_orders'