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Display and manipulate cart

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This commit is contained in:
Raphael Michel
2015-02-14 12:23:20 +01:00
parent cbf94ad4f1
commit 294ef76660
8 changed files with 175 additions and 28 deletions
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9
src/pretixbase/models.py
View File

@@ -872,6 +872,9 @@ class ItemVariation(Versionable):
verbose_name = _("Item variation")
verbose_name_plural = _("Item variations")
def __str__(self):
return str(self.to_variation_dict())
def delete(self, *args, **kwargs):
super().delete(*args, **kwargs)
if self.item:
@@ -1099,14 +1102,14 @@ class Quota(Versionable):
Q(variation__quotas__in=[self])
)
)
paid_orders = OrderPosition.objects.filter(
paid_orders = OrderPosition.objects.current.filter(
Q(order__status=Order.STATUS_PAID)
& quotalookup
).count()
if paid_orders >= self.size:
return Quota.AVAILABILITY_GONE, 0
pending_valid_orders = OrderPosition.objects.filter(
pending_valid_orders = OrderPosition.objects.current.filter(
Q(order__status=Order.STATUS_PENDING)
& Q(order__expires__gte=now())
& quotalookup
@@ -1114,7 +1117,7 @@ class Quota(Versionable):
if (paid_orders + pending_valid_orders) >= self.size:
return Quota.AVAILABILITY_ORDERED, 0
valid_cart_positions = CartPosition.objects.filter(
valid_cart_positions = CartPosition.objects.current.filter(
Q(expires__gte=now())
& quotalookup
).count()

10
src/pretixpresale/static/pretixpresale/less/event.less
View File

@@ -1,5 +1,4 @@
.product-row {
padding: 10px 0;
border-top: 1px solid @table-border-color;
&.headline, &.simple {
@@ -25,7 +24,14 @@
color: @alert-warning-text;
}
}
.price {
}
.cart-row, .product-row {
padding: 10px 0;
.count form {
display: inline;
}
.price, .count {
text-align: center;
}
.price small,

59
src/pretixpresale/templates/pretixpresale/event/fragment_cart.html Normal file
View File

@@ -0,0 +1,59 @@
{% load i18n %}
{% if cart %}
<div class="panel panel-primary">
<div class="panel-heading">
<h3 class="panel-title">{% trans "Your cart" %}</h3>
</div>
<div class="panel-body">
{% for line in cart %}
<div class="row-fluid cart-row">
<div class="col-md-4 col-xs-6">
<strong>{{ line.item }}</strong>
{% if line.variation %}
– {{ line.variation }}
{% endif %}
</div>
<div class="col-md-3 col-xs-6 price">
{{ event.currency }} {{ line.price|floatformat:2 }}
</div>
<div class="col-md-2 col-xs-6 count">
<form action="{% url "presale:event.cart.remove" event=event.slug organizer=event.organizer.slug %}"
method="post">
{% csrf_token %}
{% if line.variation %}
<input type="hidden" name="variation_{{ line.item.identity }}_{{ line.variation.identity }}"
value="1" />
{% else %}
<input type="hidden" name="item_{{ line.item.identity }}"
value="1" />
{% endif %}
<button class="btn btn-mini btn-link"><i class="fa fa-minus"></i></button>
</form>
{{ line.count }}
<form action="{% url "presale:event.cart.add" event=event.slug organizer=event.organizer.slug %}"
method="post">
{% csrf_token %}
{% if line.variation %}
<input type="hidden" name="variation_{{ line.item.identity }}_{{ line.variation.identity }}"
value="1" />
{% else %}
<input type="hidden" name="item_{{ line.item.identity }}"
value="1" />
{% endif %}
<button class="btn btn-mini btn-link"><i class="fa fa-plus"></i></button>
</form>
</div>
<div class="col-md-3 col-xs-6 price">
<strong>{{ event.currency }} {{ line.total|floatformat:2 }}</strong>
{% if line.item.tax_rate %}
<br /><small>{% blocktrans trimmed with rate=line.item.tax_rate %}
incl. {{ rate }}% taxes
{% endblocktrans %}</small>
{% endif %}
</div>
<div class="clearfix"></div>
</div>
{% endfor %}
</div>
</div>
{% endif %}

1
src/pretixpresale/templates/pretixpresale/event/index.html
View File

@@ -2,6 +2,7 @@
{% load i18n %}
{% block content %}
{% include "pretixpresale/event/fragment_cart.html" with cart=cart event=request.event %}
<form method="post"
action="{% url "presale:event.cart.add" organizer=request.event.organizer.slug event=request.event.slug %}?next={{ request.path_info|urlencode }}">
{% csrf_token %}

1
src/pretixpresale/urls.py
View File

@@ -10,6 +10,7 @@ urlpatterns = patterns(
'pretixpresale.views.event',
url(r'^$', pretixpresale.views.event.EventIndex.as_view(), name='event.index'),
url(r'^cart/add$', pretixpresale.views.cart.CartAdd.as_view(), name='event.cart.add'),
url(r'^cart/remove$', pretixpresale.views.cart.CartRemove.as_view(), name='event.cart.remove'),
)
)),
)

57
src/pretixpresale/views/__init__.py
View File

@@ -0,0 +1,57 @@
import uuid
from itertools import groupby
from django.db.models import Q
from pretixbase.models import CartPosition
class CartMixin:
def get_session_key(self):
if 'cart_key' in self.request.session:
return self.request.session.get('cart_key')
key = str(uuid.uuid4())
self.request.session['cart_key'] = key
return key
class CartDisplayMixin(CartMixin):
def get_cart(self):
qw = Q(session=self.get_session_key())
if self.request.user.is_authenticated():
qw |= Q(user=self.request.user)
cartpos = list(CartPosition.objects.current.filter(
qw & Q(event=self.request.event)
).order_by(
'item', 'variation'
).select_related(
'item', 'variation'
).prefetch_related(
'variation__values', 'variation__values__prop'
))
# Group items of the same variation
# We do this by list manipulations instead of a GROUP BY query, as
# Django is unable to join related models in a .values() query
def keyfunc(pos):
return pos.item_id, pos.variation_id, pos.price
cart = []
for k, g in groupby(sorted(cartpos, key=keyfunc), key=keyfunc):
g = list(g)
group = g[0]
group.count = len(g)
group.total = group.count * group.price
cart.append(group)
return cart
class EventViewMixin:
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['event'] = self.request.event
return context

54
src/pretixpresale/views/cart.py
View File

@@ -1,18 +1,18 @@
from datetime import timedelta
import uuid
from django.contrib import messages
from django.core.urlresolvers import reverse
from django.db.models import Q
from django.shortcuts import redirect
from django.utils.timezone import now
from django.views.generic import View
from django.utils.translation import ugettext_lazy as _
from .event import EventViewMixin
from pretixbase.models import Item, ItemVariation, Quota, CartPosition
from pretixpresale.views import CartMixin, EventViewMixin
class CartActionMixin:
class CartActionMixin(CartMixin):
def get_next_url(self):
if "next" in self.request.GET and '://' not in self.request.GET:
@@ -29,16 +29,6 @@ class CartActionMixin:
def get_failure_url(self):
return self.get_next_url()
def get_session_key(self):
if 'cart_key' in self.request.session:
return self.request.session.get('cart_key')
key = str(uuid.uuid4())
self.request.session['cart_key'] = key
return key
class CartAdd(EventViewMixin, CartActionMixin, View):
def _items_from_post_data(self):
"""
Parses the POST data and returns a list of tuples in the
@@ -65,6 +55,32 @@ class CartAdd(EventViewMixin, CartActionMixin, View):
return False
return items
class CartRemove(EventViewMixin, CartActionMixin, View):
def post(self, *args, **kwargs):
items = self._items_from_post_data()
if not items:
return redirect(self.get_failure_url())
qw = Q(session=self.get_session_key())
if self.request.user.is_authenticated():
qw |= Q(user=self.request.user)
for item, variation, cnt in items:
cw = qw & Q(item_id=item)
if variation:
cw &= Q(variation_id=variation)
else:
cw &= Q(variation__isnull=True)
for cp in CartPosition.objects.current.filter(cw).order_by("-price")[:cnt]:
cp.delete()
messages.success(self.request, _('Your cart has been updated.'))
return redirect(self.get_success_url())
class CartAdd(EventViewMixin, CartActionMixin, View):
def post(self, *args, **kwargs):
items = self._items_from_post_data()
if not items:
@@ -79,19 +95,27 @@ class CartAdd(EventViewMixin, CartActionMixin, View):
# Fetch items from the database
items_cache = {
i.identity: i for i
in Item.objects.filter(
in Item.objects.current.filter(
event=self.request.event,
identity__in=[i[0] for i in items]
).prefetch_related("quotas")
}
variations_cache = {
v.identity: v for v
in ItemVariation.objects.filter(
in ItemVariation.objects.current.filter(
item__event=self.request.event,
identity__in=[i[1] for i in items if i[1] is not None]
).select_related("item", "item__event").prefetch_related("quotas", "values", "values__prop")
}
# Extend this user's cart session to 30 minutes from now to ensure all items in the
# cart expire at the same time
qw = Q(session=self.get_session_key())
if self.request.user.is_authenticated():
qw |= Q(user=self.request.user)
CartPosition.objects.current.filter(
qw & Q(event=self.request.event)).update(expires=now() + timedelta(minutes=30))
# Process the request itself
msg_some_unavailable = False
for i in items:

12
src/pretixpresale/views/event.py
View File

@@ -1,15 +1,9 @@
from django.db.models import Count
from django.views.generic import TemplateView
from pretixpresale.views import EventViewMixin, CartDisplayMixin
class EventViewMixin:
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['event'] = self.request.event
return context
class EventIndex(EventViewMixin, TemplateView):
class EventIndex(EventViewMixin, CartDisplayMixin, TemplateView):
template_name = "pretixpresale/event/index.html"
def get_context_data(self, **kwargs):
@@ -46,4 +40,6 @@ class EventIndex(EventViewMixin, TemplateView):
(cat, [i for i in items if i.category_id == cat.identity])
for cat in set([i.category for i in items]) # insert categories into a set for uniqueness
], key=lambda group: (group[0].position, group[0].pk)) # a set is unsorted, so sort again by category
context['cart'] = self.get_cart()
return context