Added basic statistics

src/pretix/plugins/statistics/__init__.py

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+from django.apps import AppConfig
+from django.utils.translation import ugettext_lazy as _
+
+from pretix.base.plugins import PluginType
+
+
+class StatisticsApp(AppConfig):
+    name = 'pretix.plugins.statistics'
+    verbose_name = _("Statistics")
+
+    class PretixPluginMeta:
+        type = PluginType.ADMINFEATURE
+        name = _("Display various statistics")
+        author = _("the pretix team")
+        version = '1.0.0'
+        description = _("This plugin shows you various statistics.")
+
+    def ready(self):
+        from . import signals  # NOQA
+
+
+default_app_config = 'pretix.plugins.statistics.StatisticsApp'

src/pretix/plugins/statistics/signals.py

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+from django.core.urlresolvers import resolve, reverse
+from django.dispatch import receiver
+from django.template import Context
+from django.template.loader import get_template
+from django.utils.translation import ugettext_lazy as _
+
+from pretix.control.signals import nav_event, html_head
+
+
+@receiver(nav_event)
+def control_nav_import(sender, request=None, **kwargs):
+    url = resolve(request.path_info)
+    if not request.eventperm.can_view_orders:
+        return []
+    return [
+        {
+            'label': _('Statistics'),
+            'url': reverse('plugins:statistics:index', kwargs={
+                'event': request.event.slug,
+                'organizer': request.event.organizer.slug,
+            }),
+            'active': (url.namespace == 'plugins:statistics'),
+            'icon': 'bar-chart',
+        }
+    ]
+
+
+@receiver(html_head)
+def html_head_presale(sender, request=None, **kwargs):
+    url = resolve(request.path_info)
+    if url.namespace == 'plugins:statistics':
+        template = get_template('pretixplugins/statistics/control_head.html')
+        ctx = Context({})
+        return template.render(ctx)
+    else:
+        return ""

src/pretix/plugins/statistics/static/pretixplugins/statistics/morris.css

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+.morris-hover{position:absolute;z-index:1000}.morris-hover.morris-default-style{border-radius:10px;padding:6px;color:#666;background:rgba(255,255,255,0.8);border:solid 2px rgba(230,230,230,0.8);font-family:sans-serif;font-size:12px;text-align:center}.morris-hover.morris-default-style .morris-hover-row-label{font-weight:bold;margin:0.25em 0}
+.morris-hover.morris-default-style .morris-hover-point{white-space:nowrap;margin:0.1em 0}

src/pretix/plugins/statistics/templates/pretixplugins/statistics/control_head.html

@@ -0,0 +1,6 @@
+{% load staticfiles %}
+{% load compress %}
+
+{% compress css %}
+    <link type="text/css" rel="stylesheet" href="{% static "pretixplugins/statistics/morris.css" %}">
+{% endcompress %}

src/pretix/plugins/statistics/templates/pretixplugins/statistics/index.html

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+{% extends "pretixcontrol/event/base.html" %}
+{% load i18n %}
+{% load compress %}
+{% load staticfiles %}
+{% block title %}{% trans "Statistics" %}{% endblock %}
+{% block content %}
+    <h1>{% trans "Statistics" %}</h1>
+    <h3>{% trans "Orders by day" %}</h3>
+    <div id="obd_chart" style="height: 250px;"></div>
+    {% compress js %}
+        <script type="text/javascript" src="{% static "pretixplugins/statistics/raphael-min.js" %}"></script>
+        <script type="text/javascript" src="{% static "pretixplugins/statistics/morris.min.js" %}"></script>
+    {% endcompress %}
+    <script type="text/javascript">
+        new Morris.Line({
+            element: 'obd_chart',
+            data: {{ obd_data|safe }},
+            xkey: 'date',
+            ykeys: ['ordered', 'paid'],
+            labels: ['{% trans "Placed orders" %}', '{% trans "Paid orders" %}']
+        });
+    </script>
+{% endblock %}
+

src/pretix/plugins/statistics/urls.py

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+from django.conf.urls import url
+
+from . import views
+
+urlpatterns = [
+    url(r'^control/event/(?P<organizer>[^/]+)/(?P<event>[^/]+)/statistics/', views.IndexView.as_view(),
+        name='index'),
+]

src/pretix/plugins/statistics/views.py

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+import json
+from django.db.models import Count
+from django.views.generic import TemplateView
+import dateutil.parser
+import dateutil.rrule
+from pretix.base.models import Order
+
+from pretix.control.permissions import EventPermissionRequiredMixin
+
+
+class IndexView(EventPermissionRequiredMixin, TemplateView):
+    template_name = 'pretixplugins/statistics/index.html'
+    permission = 'can_view_orders'
+
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data(**kwargs)
+
+        ordered_by_day = {
+            dateutil.parser.parse(o['datetime']).date(): o['count']
+            for o in
+            Order.objects.current.filter(event=self.request.event).extra({'datetime': "date(datetime)"}).values(
+                'datetime').annotate(count=Count('id'))
+        }
+        paid_by_day = {
+            o['payment_date'].date(): o['count']
+            for o in
+            Order.objects.current.filter(event=self.request.event, payment_date__isnull=False).values(
+                'payment_date').annotate(count=Count('id'))
+        }
+        data = []
+        for d in dateutil.rrule.rrule(
+                dateutil.rrule.DAILY,
+                dtstart=min(ordered_by_day.keys()),
+                until=max(max(ordered_by_day.keys()), max(paid_by_day.keys()))):
+            d = d.date()
+            data.append({
+                'date': d.strftime('%Y-%m-%d'),
+                'ordered': ordered_by_day.get(d, 0),
+                'paid': paid_by_day.get(d, 0)
+            })
+
+        ctx['obd_data'] = json.dumps(data)
+
+        return ctx