Add a view for GlobalSettings

src/pretix/base/settings.py

@@ -305,7 +305,7 @@ Your {event} team"""))
 
 class SettingsProxy:
     """
-    This objects allows convenient access to settings stored in the
+    This object allows convenient access to settings stored in the
     EventSettings/OrganizerSettings database model. It exposes all settings as
     properties and it will do all the nasty inheritance and defaults stuff for
     you.
@@ -442,7 +442,7 @@ class SettingsProxy:
 
     def set(self, key: str, value: Any) -> None:
         """
-        Stores a setting to the database of this object.
+        Stores a setting to the database of its object.
         """
         if key in self._cache():
             s = self._cache()[key]

src/pretix/base/signals.py

@@ -122,3 +122,9 @@ be everything between a minute and a day. The actions you perform should be
 idempotent, i.e. it should not make a difference if this is sent out more often
 than expected.
 """
+
+register_global_settings = django.dispatch.Signal()
+"""
+All plugins that are installed may send fields for the global settings form, as
+an OrderedDict of (setting name, form field).
+"""

src/pretix/control/forms/global_settings.py

@@ -0,0 +1,42 @@
+from collections import OrderedDict
+
+from django.utils.translation import ugettext_lazy as _
+
+from pretix.base.forms import SettingsForm
+from pretix.base.i18n import I18nFormField, I18nTextInput
+from pretix.base.models.settings import GlobalSetting
+from pretix.base.settings import SettingsProxy
+from pretix.base.signals import register_global_settings
+
+
+class GlobalSettingsObject:
+    def __init__(self):
+        self.settings = SettingsProxy(self, type=GlobalSetting)
+        self.setting_objects = GlobalSetting.objects
+        self.slug = 'GLOBALSETTINGS'
+
+
+class GlobalSettingsForm(SettingsForm):
+    def __init__(self, *args, **kwargs):
+        self.obj = GlobalSettingsObject()
+        super().__init__(*args, obj=self.obj, **kwargs)
+
+        self.fields = OrderedDict([
+            ('footer_text', I18nFormField(
+                widget=I18nTextInput,
+                required=False,
+                label=_("Additional footer text"),
+                help_text=_("Will be included as additional text in the footer, site-wide.")
+            )),
+            ('footer_link', I18nFormField(
+                widget=I18nTextInput,
+                required=False,
+                label=_("Additional footer link"),
+                help_text=_("Will be included as the link in the additional footer text.")
+            ))
+        ])
+        responses = register_global_settings.send(self)
+        for r, response in responses:
+            for key, value in response.items():
+                # We need to be this explicit, since OrderedDict.update does not retain ordering
+                self.fields[key] = value

src/pretix/control/permissions.py

@@ -81,7 +81,7 @@ def organizer_permission_required(permission):
 
 class OrganizerPermissionRequiredMixin:
     """
-    This mixin is equivalent to the event_permission_required view decorator but
+    This mixin is equivalent to the organizer_permission_required view decorator but
     is in a form suitable for class-based views.
     """
     permission = ''
@@ -90,3 +90,33 @@ class OrganizerPermissionRequiredMixin:
     def as_view(cls, **initkwargs):
         view = super(OrganizerPermissionRequiredMixin, cls).as_view(**initkwargs)
         return organizer_permission_required(cls.permission)(view)
+
+
+def administrator_permission_required(permission):
+    """
+    This view decorator rejects all requests with a 403 response which are not from
+    users with the is_superuser flag.
+    """
+    def decorator(function):
+        def wrapper(request, *args, **kw):
+            if not request.user.is_authenticated:  # NOQA
+                # just a double check, should not ever happen
+                raise PermissionDenied()
+            if not request.user.is_superuser:
+                raise PermissionDenied(_('You do not have permission to view this content.'))
+            return function(request, *args, **kw)
+        return wrapper
+    return decorator
+
+
+class AdministratorPermissionRequiredMixin:
+    """
+    This mixin is equivalent to the administrator_permission_required view decorator but
+    is in a form suitable for class-based views.
+    """
+    permission = ''
+
+    @classmethod
+    def as_view(cls, **initkwargs):
+        view = super(AdministratorPermissionRequiredMixin, cls).as_view(**initkwargs)
+        return administrator_permission_required(cls.permission)(view)

src/pretix/control/templates/pretixcontrol/base.html

@@ -101,6 +101,14 @@
                                         {% trans "Dashboard" %}
                                     </a>
                                 </li>
+                                {% if request.user.is_superuser %}
+                                    <li>
+                                        <a href="{% url 'control:global-settings' %}" {% if "global-settings" in url_name %}class="active"{% endif %}>
+                                            <i class="fa fa-wrench fa-fw"></i>
+                                            {% trans "Global settings" %}
+                                        </a>
+                                    </li>
+                                {% endif %}
                                 <li>
                                     <a href="{% url 'control:events' %}" {% if "events" in url_name %}class="active"{% endif %}>
                                         <i class="fa fa-calendar fa-fw"></i>

src/pretix/control/templates/pretixcontrol/global_settings.html

@@ -0,0 +1,18 @@
+{% extends "pretixcontrol/base.html" %}
+{% load i18n %}
+{% load bootstrap3 %}
+
+{% block title %}{% trans "Global settings" %}{% endblock %}
+{% block content %}
+    <h1>{% trans "Global settings" %}</h1>
+    <form action="" method="post" class="form-horizontal">
+        {% csrf_token %}
+        {% bootstrap_form_errors form %}
+        {% bootstrap_form form %}
+        <div class="form-group submit-group">
+            <button type="submit" class="btn btn-primary btn-save">
+                {% trans "Save" %}
+            </button>
+        </div>
+    </form>
+{% endblock %}

src/pretix/control/urls.py

@@ -1,8 +1,8 @@
 from django.conf.urls import include, url
 
 from pretix.control.views import (
-    auth, dashboards, event, help, item, main, orders, organizer, user,
-    vouchers,
+    auth, dashboards, event, global_settings, help, item, main, orders,
+    organizer, user, vouchers,
 )
 
 urlpatterns = [
@@ -13,6 +13,7 @@ urlpatterns = [
     url(r'^forgot$', auth.Forgot.as_view(), name='auth.forgot'),
     url(r'^forgot/recover$', auth.Recover.as_view(), name='auth.forgot.recover'),
     url(r'^$', dashboards.user_index, name='index'),
+    url(r'^settings/$', global_settings.GlobalSettingsView.as_view(), name='global-settings'),
     url(r'^reauth/$', user.ReauthView.as_view(), name='user.reauth'),
     url(r'^settings$', user.UserSettings.as_view(), name='user.settings'),
     url(r'^settings/2fa/$', user.User2FAMainView.as_view(), name='user.settings.2fa'),

src/pretix/control/views/global_settings.py

@@ -0,0 +1,17 @@
+from django.views.generic import FormView
+
+from pretix.control.forms.global_settings import GlobalSettingsForm
+from pretix.control.permissions import AdministratorPermissionRequiredMixin
+
+
+class GlobalSettingsView(AdministratorPermissionRequiredMixin, FormView):
+    template_name = 'pretixcontrol/global_settings.html'
+    form_class = GlobalSettingsForm
+
+    def form_valid(self, form):
+        form.save()
+        return super().form_valid(form)
+
+    def get_success_url(self):
+        from django.shortcuts import reverse
+        return reverse('control:global-settings')