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Lazy-load dashboard widgets

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This commit is contained in:
Raphael Michel
2019-08-12 12:19:02 +02:00
parent 9bdb715874
commit 5363f4206e
6 changed files with 139 additions and 67 deletions
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161
src/pretix/control/views/dashboards.py
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@@ -8,6 +8,7 @@ from django.db.models import (
)
from django.db.models.functions import Coalesce, Greatest
from django.dispatch import receiver
from django.http import JsonResponse
from django.shortcuts import render
from django.template.loader import get_template
from django.urls import reverse
@@ -36,44 +37,46 @@ NUM_WIDGET = '<div class="numwidget"><span class="num">{num}</span><span class="
@receiver(signal=event_dashboard_widgets)
def base_widgets(sender, subevent=None, **kwargs):
prodc = Item.objects.filter(
event=sender, active=True,
).filter(
(Q(available_until__isnull=True) | Q(available_until__gte=now())) &
(Q(available_from__isnull=True) | Q(available_from__lte=now()))
).count()
def base_widgets(sender, subevent=None, lazy=False, **kwargs):
if not lazy:
prodc = Item.objects.filter(
event=sender, active=True,
).filter(
(Q(available_until__isnull=True) | Q(available_until__gte=now())) &
(Q(available_from__isnull=True) | Q(available_from__lte=now()))
).count()
if subevent:
opqs = OrderPosition.objects.filter(subevent=subevent)
else:
opqs = OrderPosition.objects
if subevent:
opqs = OrderPosition.objects.filter(subevent=subevent)
else:
opqs = OrderPosition.objects
tickc = opqs.filter(
order__event=sender, item__admission=True,
order__status__in=(Order.STATUS_PAID, Order.STATUS_PENDING),
).count()
tickc = opqs.filter(
order__event=sender, item__admission=True,
order__status__in=(Order.STATUS_PAID, Order.STATUS_PENDING),
).count()
paidc = opqs.filter(
order__event=sender, item__admission=True,
order__status=Order.STATUS_PAID,
).count()
paidc = opqs.filter(
order__event=sender, item__admission=True,
order__status=Order.STATUS_PAID,
).count()
if subevent:
rev = opqs.filter(
order__event=sender, order__status=Order.STATUS_PAID
).aggregate(
sum=Sum('price')
)['sum'] or Decimal('0.00')
else:
rev = Order.objects.filter(
event=sender,
status=Order.STATUS_PAID
).aggregate(sum=Sum('total'))['sum'] or Decimal('0.00')
if subevent:
rev = opqs.filter(
order__event=sender, order__status=Order.STATUS_PAID
).aggregate(
sum=Sum('price')
)['sum'] or Decimal('0.00')
else:
rev = Order.objects.filter(
event=sender,
status=Order.STATUS_PAID
).aggregate(sum=Sum('total'))['sum'] or Decimal('0.00')
return [
{
'content': NUM_WIDGET.format(num=tickc, text=_('Attendees (ordered)')),
'content': None if lazy else NUM_WIDGET.format(num=tickc, text=_('Attendees (ordered)')),
'lazy': 'attendees-ordered',
'display_size': 'small',
'priority': 100,
'url': reverse('control:event.orders', kwargs={
@@ -82,7 +85,8 @@ def base_widgets(sender, subevent=None, **kwargs):
}) + ('?subevent={}'.format(subevent.pk) if subevent else '')
},
{
'content': NUM_WIDGET.format(num=paidc, text=_('Attendees (paid)')),
'content': None if lazy else NUM_WIDGET.format(num=paidc, text=_('Attendees (paid)')),
'lazy': 'attendees-paid',
'display_size': 'small',
'priority': 100,
'url': reverse('control:event.orders.overview', kwargs={
@@ -91,8 +95,9 @@ def base_widgets(sender, subevent=None, **kwargs):
}) + ('?subevent={}'.format(subevent.pk) if subevent else '')
},
{
'content': NUM_WIDGET.format(
'content': None if lazy else NUM_WIDGET.format(
num=formats.localize(round_decimal(rev, sender.currency)), text=_('Total revenue ({currency})').format(currency=sender.currency)),
'lazy': 'total-revenue',
'display_size': 'small',
'priority': 100,
'url': reverse('control:event.orders.overview', kwargs={
@@ -101,7 +106,8 @@ def base_widgets(sender, subevent=None, **kwargs):
}) + ('?subevent={}'.format(subevent.pk) if subevent else '')
},
{
'content': NUM_WIDGET.format(num=prodc, text=_('Active products')),
'content': None if lazy else NUM_WIDGET.format(num=prodc, text=_('Active products')),
'lazy': 'active-products',
'display_size': 'small',
'priority': 100,
'url': reverse('control:event.items', kwargs={
@@ -113,32 +119,36 @@ def base_widgets(sender, subevent=None, **kwargs):
@receiver(signal=event_dashboard_widgets)
def waitinglist_widgets(sender, subevent=None, **kwargs):
def waitinglist_widgets(sender, subevent=None, lazy=False, **kwargs):
widgets = []
wles = WaitingListEntry.objects.filter(event=sender, subevent=subevent, voucher__isnull=True)
if wles.count():
quota_cache = {}
itemvar_cache = {}
happy = 0
if not lazy:
quota_cache = {}
itemvar_cache = {}
happy = 0
for wle in wles:
if (wle.item, wle.variation) not in itemvar_cache:
itemvar_cache[(wle.item, wle.variation)] = (
wle.variation.check_quotas(subevent=wle.subevent, count_waitinglist=False, _cache=quota_cache)
if wle.variation
else wle.item.check_quotas(subevent=wle.subevent, count_waitinglist=False, _cache=quota_cache)
)
row = itemvar_cache.get((wle.item, wle.variation))
if row[1] is None:
itemvar_cache[(wle.item, wle.variation)] = (row[0], row[1])
happy += 1
elif row[1] > 0:
itemvar_cache[(wle.item, wle.variation)] = (row[0], row[1] - 1)
happy += 1
for wle in wles:
if (wle.item, wle.variation) not in itemvar_cache:
itemvar_cache[(wle.item, wle.variation)] = (
wle.variation.check_quotas(subevent=wle.subevent, count_waitinglist=False, _cache=quota_cache)
if wle.variation
else wle.item.check_quotas(subevent=wle.subevent, count_waitinglist=False, _cache=quota_cache)
)
row = itemvar_cache.get((wle.item, wle.variation))
if row[1] is None:
itemvar_cache[(wle.item, wle.variation)] = (row[0], row[1])
happy += 1
elif row[1] > 0:
itemvar_cache[(wle.item, wle.variation)] = (row[0], row[1] - 1)
happy += 1
widgets.append({
'content': NUM_WIDGET.format(num=str(happy), text=_('available to give to people on waiting list')),
'content': None if lazy else NUM_WIDGET.format(
num=str(happy), text=_('available to give to people on waiting list')
),
'lazy': 'waitinglist',
'priority': 50,
'url': reverse('control:event.orders.waitinglist', kwargs={
'event': sender.slug,
@@ -146,7 +156,8 @@ def waitinglist_widgets(sender, subevent=None, **kwargs):
})
})
widgets.append({
'content': NUM_WIDGET.format(num=str(wles.count()), text=_('total waiting list length')),
'content': None if lazy else NUM_WIDGET.format(num=str(wles.count()), text=_('total waiting list length')),
'lazy': lazy,
'display_size': 'small',
'priority': 50,
'url': reverse('control:event.orders.waitinglist', kwargs={
@@ -159,14 +170,18 @@ def waitinglist_widgets(sender, subevent=None, **kwargs):
@receiver(signal=event_dashboard_widgets)
def quota_widgets(sender, subevent=None, **kwargs):
def quota_widgets(sender, subevent=None, lazy=False, **kwargs):
widgets = []
for q in sender.quotas.filter(subevent=subevent):
status, left = q.availability(allow_cache=True)
if not lazy:
status, left = q.availability(allow_cache=True)
widgets.append({
'content': NUM_WIDGET.format(num='{}/{}'.format(left, q.size) if q.size is not None else '\u221e',
text=_('{quota} left').format(quota=escape(q.name))),
'content': None if lazy else NUM_WIDGET.format(
num='{}/{}'.format(left, q.size) if q.size is not None else '\u221e',
text=_('{quota} left').format(quota=escape(q.name))
),
'lazy': 'quota-{}'.format(q.pk),
'display_size': 'small',
'priority': 50,
'url': reverse('control:event.items.quotas.show', kwargs={
@@ -209,14 +224,18 @@ def shop_state_widget(sender, **kwargs):
@receiver(signal=event_dashboard_widgets)
def checkin_widget(sender, subevent=None, **kwargs):
def checkin_widget(sender, subevent=None, lazy=False, **kwargs):
widgets = []
qs = sender.checkin_lists.filter(subevent=subevent)
qs = CheckinList.annotate_with_numbers(qs, sender)
if not lazy:
qs = CheckinList.annotate_with_numbers(qs, sender)
for cl in qs:
widgets.append({
'content': NUM_WIDGET.format(num='{}/{}'.format(cl.checkin_count, cl.position_count),
text=_('Checked in – {list}').format(list=escape(cl.name))),
'content': None if lazy else NUM_WIDGET.format(
num='{}/{}'.format(cl.checkin_count, cl.position_count),
text=_('Checked in – {list}').format(list=escape(cl.name))
),
'lazy': 'checkin-{}'.format(cl.pk),
'display_size': 'small',
'priority': 50,
'url': reverse('control:event.orders.checkinlists.show', kwargs={
@@ -263,7 +282,7 @@ def event_index(request, organizer, event):
pass
widgets = []
for r, result in event_dashboard_widgets.send(sender=request.event, subevent=subevent):
for r, result in event_dashboard_widgets.send(sender=request.event, subevent=subevent, lazy=True):
widgets.extend(result)
can_change_orders = request.user.has_event_permission(request.organizer, request.event, 'can_change_orders',
@@ -320,6 +339,22 @@ def event_index(request, organizer, event):
return resp
def event_index_widgets_lazy(request, organizer, event):
subevent = None
if request.GET.get("subevent", "") != "" and request.event.has_subevents:
i = request.GET.get("subevent", "")
try:
subevent = request.event.subevents.get(pk=i)
except SubEvent.DoesNotExist:
pass
widgets = []
for r, result in event_dashboard_widgets.send(sender=request.event, subevent=subevent, lazy=False):
widgets.extend(result)
return JsonResponse({'widgets': widgets})
def annotated_event_query(request):
active_orders = Order.objects.filter(
event=OuterRef('pk'),