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API: Writeable methods for vouchers (#639)

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This commit is contained in:
Raphael Michel
2017-10-12 14:09:44 +02:00
committed by GitHub
parent de086a2b07
commit be6496e569
11 changed files with 1029 additions and 109 deletions
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114
src/pretix/control/forms/vouchers.py
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@@ -2,9 +2,7 @@ import copy
from django import forms
from django.core.exceptions import ValidationError
from django.db.models import Q
from django.utils.timezone import now
from django.utils.translation import pgettext_lazy, ugettext_lazy as _
from django.utils.translation import ugettext_lazy as _
from pretix.base.forms import I18nModelForm
from pretix.base.models import Item, ItemVariation, Quota, Voucher
@@ -92,113 +90,41 @@ class VoucherForm(I18nModelForm):
self.instance.variation = None
self.instance.quota = None
if self.instance.item.category and self.instance.item.category.is_addon:
raise ValidationError(_('It is currently not possible to create vouchers for add-on products.'))
else:
self.instance.quota = Quota.objects.get(pk=quotaid, event=self.instance.event)
self.instance.item = None
self.instance.variation = None
if data.get('max_usages', 0) < self.instance.redeemed:
raise ValidationError(
_('This voucher has already been redeemed %(redeemed)s times. You cannot reduce the maximum number of '
'usages below this number.'),
params={
'redeemed': self.instance.redeemed
}
)
if 'codes' in data:
data['codes'] = [a.strip() for a in data.get('codes', '').strip().split("\n") if a]
cnt = len(data['codes']) * data['max_usages']
else:
cnt = data['max_usages']
if self.instance.event.has_subevents and data['block_quota'] and not data.get('subevent'):
raise ValidationError(pgettext_lazy(
'subevent',
'If you want this voucher to block quota, you need to select a specific date.'
))
if self._clean_quota_needs_checking(data):
self._clean_quota_check(data, cnt)
if 'code' in data and Voucher.objects.filter(Q(code=data['code']) & Q(event=self.instance.event) & ~Q(pk=self.instance.pk)).exists():
raise ValidationError(_('A voucher with this code already exists.'))
Voucher.clean_item_properties(
data, self.instance.event,
self.instance.quota, self.instance.item, self.instance.variation
)
Voucher.clean_subevent(
data, self.instance.event
)
Voucher.clean_max_usages(data, self.instance.redeemed)
check_quota = Voucher.clean_quota_needs_checking(
data, self.initial_instance_data,
item_changed=data.get('itemvar') != self.initial.get('itemvar'),
creating=not self.instance.pk
)
if check_quota:
Voucher.clean_quota_check(
data, cnt, self.initial_instance_data, self.instance.event,
self.instance.quota, self.instance.item, self.instance.variation
)
Voucher.clean_voucher_code(data, self.instance.event, self.instance.pk)
voucher_form_validation.send(sender=self.instance.event, form=self, data=data)
return data
def _clean_quota_needs_checking(self, data):
# We only need to check for quota on vouchers that are now blocking quota and haven't
# before (or have blocked a different quota before)
if data.get('block_quota', False):
is_valid = data.get('valid_until') is None or data.get('valid_until') >= now()
if not is_valid:
# If the voucher is not valid, it won't block any quota
return False
if not self.instance.pk:
# This is a new voucher
return True
if not self.initial_instance_data.block_quota:
# Change from nonblocking to blocking
return True
if not self._clean_was_valid():
# This voucher has been expired and is now valid again and therefore blocks quota again
return True
if data.get('itemvar') != self.initial.get('itemvar'):
# The voucher has been reassigned to a different item, variation or quota
return True
if data.get('subevent') != self.initial.get('subevent'):
# The voucher has been reassigned to a different subevent
return True
return False
def _clean_was_valid(self):
return self.initial_instance_data.valid_until is None or self.initial_instance_data.valid_until >= now()
def _clean_quota_get_ignored(self):
quotas = set()
if self.initial_instance_data and self.initial_instance_data.block_quota and self._clean_was_valid():
if self.initial_instance_data.quota:
quotas.add(self.initial_instance_data.quota)
elif self.initial_instance_data.variation:
quotas |= set(self.initial_instance_data.variation.quotas.filter(
subevent=self.initial_instance_data.subevent))
elif self.initial_instance_data.item:
quotas |= set(self.initial_instance_data.item.quotas.filter(
subevent=self.initial_instance_data.subevent))
return quotas
def _clean_quota_check(self, data, cnt):
old_quotas = self._clean_quota_get_ignored()
if self.instance.quota:
if self.instance.quota in old_quotas:
return
else:
avail = self.instance.quota.availability(count_waitinglist=False)
elif self.instance.item and self.instance.item.has_variations and not self.instance.variation:
raise ValidationError(_('You can only block quota if you specify a specific product variation. '
'Otherwise it might be unclear which quotas to block.'))
elif self.instance.item and self.instance.variation:
avail = self.instance.variation.check_quotas(ignored_quotas=old_quotas, subevent=data.get('subevent'))
elif self.instance.item and not self.instance.item.has_variations:
avail = self.instance.item.check_quotas(ignored_quotas=old_quotas, subevent=data.get('subevent'))
else:
raise ValidationError(_('You need to specify either a quota or a product.'))
if avail[0] != Quota.AVAILABILITY_OK or (avail[1] is not None and avail[1] < cnt):
raise ValidationError(_('You cannot create a voucher that blocks quota as the selected product or '
'quota is currently sold out or completely reserved.'))
def save(self, commit=True):
super().save(commit)