Add support for orders without email addresses

src/pretix/presale/checkoutflow.py

@@ -522,6 +522,7 @@ class ConfirmStep(CartMixin, AsyncAction, TemplateFlowStep):
         for r, response in sorted(responses, key=lambda r: str(r[0])):
             for key, value in response.items():
                 v = self.cart_session.get('contact_form_data', {}).get(key)
+                v = value.bound_data(v, initial='')
                 if v is True:
                     v = _('Yes')
                 elif v is False:

src/pretix/presale/forms/checkout.py

@@ -14,6 +14,7 @@ from pretix.base.forms.questions import (
 from pretix.base.models import ItemVariation
 from pretix.base.models.tax import TAXED_ZERO
 from pretix.base.templatetags.rich_text import rich_text
+from pretix.base.validators import EmailBlacklistValidator
 from pretix.presale.signals import contact_form_fields
 
 
@@ -23,6 +24,7 @@ class ContactForm(forms.Form):
                              help_text=_('Make sure to enter a valid email address. We will send you an order '
                                          'confirmation including a link that you need in case you want to make '
                                          'modifications to your order or download your ticket later.'),
+                             validators=[EmailBlacklistValidator()],
                              widget=forms.EmailInput(attrs={'autofocus': 'autofocus'}))
 
     def __init__(self, *args, **kwargs):

src/pretix/presale/templates/pretixpresale/event/checkout_confirm.html

@@ -120,10 +120,12 @@
                         </h3>
                     </div>
                     <div class="panel-body">
-                        <dl class="dl-horizontal">
-                            <dt>{% trans "E-mail address" %}</dt>
-                            <dd>{{ cart_session.email }}</dd>
-                        </dl>
+                        {% if "email" not in contact_info.keys %}
+                            <dl class="dl-horizontal">
+                                <dt>{% trans "E-mail address" %}</dt>
+                                <dd>{{ cart_session.email }}</dd>
+                            </dl>
+                        {% endif %}
                         {% for l, v in contact_info %}
                             <dl class="dl-horizontal">
                                 <dt>{{ l }}</dt>