Always query emails case-insensitively

src/pretix/base/forms/auth.py

@@ -120,7 +120,7 @@ class RegistrationForm(forms.Form):
 
     def clean_email(self):
         email = self.cleaned_data['email']
-        if User.objects.filter(email=email).exists():
+        if User.objects.filter(email__iexact=email).exists():
             raise forms.ValidationError(
                 self.error_messages['duplicate_email'],
                 code='duplicate_email'

src/pretix/base/forms/user.py

@@ -69,7 +69,7 @@ class UserSettingsForm(forms.ModelForm):
 
     def clean_email(self):
         email = self.cleaned_data['email']
-        if User.objects.filter(Q(email=email) & ~Q(pk=self.instance.pk)).exists():
+        if User.objects.filter(Q(email__iexact=email) & ~Q(pk=self.instance.pk)).exists():
             raise forms.ValidationError(
                 self.error_messages['duplicate_identifier'],
                 code='duplicate_identifier',

src/pretix/base/models/waitinglist.py

@@ -159,7 +159,7 @@ class WaitingListEntry(LoggedModel):
     @staticmethod
     def clean_duplicate(email, item, variation, subevent, pk):
         if WaitingListEntry.objects.filter(
-                item=item, variation=variation, email=email, voucher__isnull=True, subevent=subevent
+                item=item, variation=variation, email__iexact=email, voucher__isnull=True, subevent=subevent
         ).exclude(pk=pk).exists():
             raise ValidationError(_('You are already on this waiting list! We will notify '
                                     'you as soon as we have a ticket available for you.'))

src/pretix/control/forms/users.py

@@ -57,7 +57,7 @@ class UserEditForm(forms.ModelForm):
 
     def clean_email(self):
         email = self.cleaned_data['email']
-        if User.objects.filter(Q(email=email) & ~Q(pk=self.instance.pk)).exists():
+        if User.objects.filter(Q(email__iexact=email) & ~Q(pk=self.instance.pk)).exists():
             raise forms.ValidationError(
                 self.error_messages['duplicate_identifier'],
                 code='duplicate_identifier',

src/pretix/control/views/auth.py

@@ -199,7 +199,7 @@ class Forgot(TemplateView):
             has_redis = settings.HAS_REDIS
 
             try:
-                user = User.objects.get(email=email)
+                user = User.objects.get(email__iexact=email)
 
                 if has_redis:
                     from django_redis import get_redis_connection

src/pretix/control/views/organizer.py

@@ -575,9 +575,9 @@ class TeamMemberView(OrganizerDetailViewMixin, OrganizerPermissionRequiredMixin,
         elif "user" in self.request.POST and self.add_form.is_valid() and self.add_form.has_changed():
 
             try:
-                user = User.objects.get(email=self.add_form.cleaned_data['user'])
+                user = User.objects.get(email__iexact=self.add_form.cleaned_data['user'])
             except User.DoesNotExist:
-                if self.object.invites.filter(email=self.add_form.cleaned_data['user']).exists():
+                if self.object.invites.filter(email__iexact=self.add_form.cleaned_data['user']).exists():
                     messages.error(self.request, _('This user already has been invited for this team.'))
                     return self.get(request, *args, **kwargs)
 

src/pretix/presale/views/user.py

@@ -36,7 +36,7 @@ class ResendLinkView(EventViewMixin, TemplateView):
             else:
                 rc.setex('pretix_resend_{}'.format(user), 3600 * 24, '1')
 
-        orders = self.request.event.orders.filter(email=user)
+        orders = self.request.event.orders.filter(email__iexact=user)
         order_context = []
 
         for order in orders: