import copy import json import os import string from datetime import datetime, time, timedelta from decimal import Decimal from typing import Any, Dict, List, Union import dateutil import pytz from django.conf import settings from django.db import models from django.db.models import F, Sum from django.db.models.signals import post_delete from django.dispatch import receiver from django.urls import reverse from django.utils.crypto import get_random_string from django.utils.encoding import escape_uri_path from django.utils.formats import date_format from django.utils.functional import cached_property from django.utils.timezone import make_aware, now from django.utils.translation import pgettext_lazy, ugettext_lazy as _ from django_countries.fields import CountryField from i18nfield.strings import LazyI18nString from pretix.base.i18n import language from pretix.base.models import User from pretix.base.reldate import RelativeDateWrapper from .base import LoggedModel from .event import Event, SubEvent from .items import Item, ItemVariation, Question, QuestionOption, Quota def generate_secret(): return get_random_string(length=16, allowed_chars=string.ascii_lowercase + string.digits) def generate_position_secret(): # Exclude o,0,1,i,l to avoid confusion with bad fonts/printers return get_random_string(length=settings.ENTROPY['ticket_secret'], allowed_chars='abcdefghjkmnpqrstuvwxyz23456789') class Order(LoggedModel): """ An order is created when a user clicks 'buy' on his cart. It holds several OrderPositions and is connected to a user. It has an expiration date: If items run out of capacity, orders which are over their expiration date might be canceled. An order -- like all objects -- has an ID, which is globally unique, but also a code, which is shorter and easier to memorize, but only unique within a single conference. :param code: In addition to the ID, which is globally unique, every order has an order code, which is shorter and easier to memorize, but is only unique within a single conference. :type code: str :param status: The status of this order. One of: * ``STATUS_PENDING`` * ``STATUS_PAID`` * ``STATUS_EXPIRED`` * ``STATUS_CANCELED`` * ``STATUS_REFUNDED`` :param event: The event this order belongs to :type event: Event :param email: The email of the person who ordered this :type email: str :param locale: The locale of this order :type locale: str :param secret: A secret string that is required to modify the order :type secret: str :param datetime: The datetime of the order placement :type datetime: datetime :param expires: The date until this order has to be paid to guarantee the fulfillment :type expires: datetime :param payment_date: The date of the payment completion (null if not yet paid) :type payment_date: datetime :param payment_provider: The payment provider selected by the user :type payment_provider: str :param payment_info: Arbitrary information stored by the payment provider :type payment_info: str :param total: The total amount of the order, including the payment fee :type total: decimal.Decimal :param comment: An internal comment that will only be visible to staff, and never displayed to the user :type comment: str :param download_reminder_sent: A field to indicate whether a download reminder has been sent. :type download_reminder_sent: boolean :param meta_info: Additional meta information on the order, JSON-encoded. :type meta_info: str """ STATUS_PENDING = "n" STATUS_PAID = "p" STATUS_EXPIRED = "e" STATUS_CANCELED = "c" STATUS_REFUNDED = "r" STATUS_CHOICE = ( (STATUS_PENDING, _("pending")), (STATUS_PAID, _("paid")), (STATUS_EXPIRED, _("expired")), (STATUS_CANCELED, _("canceled")), (STATUS_REFUNDED, _("refunded")) ) code = models.CharField( max_length=16, verbose_name=_("Order code"), db_index=True ) status = models.CharField( max_length=3, choices=STATUS_CHOICE, verbose_name=_("Status"), db_index=True ) event = models.ForeignKey( Event, verbose_name=_("Event"), related_name="orders" ) email = models.EmailField( null=True, blank=True, verbose_name=_('E-mail') ) locale = models.CharField( null=True, blank=True, max_length=32, verbose_name=_('Locale') ) secret = models.CharField(max_length=32, default=generate_secret) datetime = models.DateTimeField( verbose_name=_("Date") ) expires = models.DateTimeField( verbose_name=_("Expiration date") ) payment_date = models.DateTimeField( verbose_name=_("Payment date"), null=True, blank=True ) payment_provider = models.CharField( null=True, blank=True, max_length=255, verbose_name=_("Payment provider") ) payment_info = models.TextField( verbose_name=_("Payment information"), null=True, blank=True ) payment_manual = models.BooleanField( verbose_name=_("Payment state was manually modified"), default=False ) total = models.DecimalField( decimal_places=2, max_digits=10, verbose_name=_("Total amount") ) comment = models.TextField( blank=True, verbose_name=_("Comment"), help_text=_("The text entered in this field will not be visible to the user and is available for your " "convenience.") ) checkin_attention = models.BooleanField( verbose_name=_('Requires special attention'), default=False, help_text=_('If you set this, the check-in app will show a visible warning that tickets of this order require ' 'special attention. This will not show any details or custom message, so you need to brief your ' 'check-in staff how to handle these cases.') ) expiry_reminder_sent = models.BooleanField( default=False ) download_reminder_sent = models.BooleanField( default=False ) meta_info = models.TextField( verbose_name=_("Meta information"), null=True, blank=True ) last_modified = models.DateTimeField( auto_now=True, db_index=True ) class Meta: verbose_name = _("Order") verbose_name_plural = _("Orders") ordering = ("-datetime",) def __str__(self): return self.full_code @cached_property def meta_info_data(self): try: return json.loads(self.meta_info) except TypeError: return None @property def full_code(self): """ An order code which is unique among all events of a single organizer, built by concatenating the event slug and the order code. """ return '{event}-{code}'.format(event=self.event.slug.upper(), code=self.code) @property def changable(self): return self.status in (Order.STATUS_PAID, Order.STATUS_PENDING) def save(self, **kwargs): if 'update_fields' in kwargs and 'last_modified' not in kwargs['update_fields']: kwargs['update_fields'] = list(kwargs['update_fields']) + ['last_modified'] if not self.code: self.assign_code() if not self.datetime: self.datetime = now() if not self.expires: self.set_expires() super().save(**kwargs) def touch(self): self.save(update_fields=['last_modified']) def set_expires(self, now_dt=None, subevents=None): now_dt = now_dt or now() tz = pytz.timezone(self.event.settings.timezone) exp_by_date = now_dt.astimezone(tz) + timedelta(days=self.event.settings.get('payment_term_days', as_type=int)) exp_by_date = exp_by_date.astimezone(tz).replace(hour=23, minute=59, second=59, microsecond=0) if self.event.settings.get('payment_term_weekdays'): if exp_by_date.weekday() == 5: exp_by_date += timedelta(days=2) elif exp_by_date.weekday() == 6: exp_by_date += timedelta(days=1) self.expires = exp_by_date term_last = self.event.settings.get('payment_term_last', as_type=RelativeDateWrapper) if term_last: if self.event.has_subevents and subevents: term_last = min([ term_last.datetime(se).date() for se in subevents ]) else: term_last = term_last.datetime(self.event).date() term_last = make_aware(datetime.combine( term_last, time(hour=23, minute=59, second=59) ), tz) if term_last < self.expires: self.expires = term_last @cached_property def tax_total(self): return (self.positions.aggregate(s=Sum('tax_value'))['s'] or 0) + (self.fees.aggregate(s=Sum('tax_value'))['s'] or 0) @property def net_total(self): return self.total - self.tax_total def cancel_allowed(self): return ( self.status == Order.STATUS_PENDING or (self.status == Order.STATUS_PAID and self.total == Decimal('0.00')) ) @staticmethod def normalize_code(code): tr = str.maketrans({ '2': 'Z', '4': 'A', '5': 'S', '6': 'G', }) return code.upper().translate(tr) def assign_code(self): # This omits some character pairs completely because they are hard to read even on screens (1/I and O/0) # and includes only one of two characters for some pairs because they are sometimes hard to distinguish in # handwriting (2/Z, 4/A, 5/S, 6/G). This allows for better detection e.g. in incoming wire transfers that # might include OCR'd handwritten text charset = list('ABCDEFGHJKLMNPQRSTUVWXYZ3789') while True: code = get_random_string(length=settings.ENTROPY['order_code'], allowed_chars=charset) if not Order.objects.filter(event__organizer=self.event.organizer, code=code).exists(): self.code = code return @property def can_modify_answers(self) -> bool: """ ``True`` if the user can change the question answers / attendee names that are related to the order. This checks order status and modification deadlines. It also returns ``False`` if there are no questions that can be answered. """ if self.status not in (Order.STATUS_PENDING, Order.STATUS_PAID, Order.STATUS_EXPIRED): return False modify_deadline = self.event.settings.get('last_order_modification_date', as_type=RelativeDateWrapper) if self.event.has_subevents and modify_deadline: modify_deadline = min([ modify_deadline.datetime(se) for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True)) ]) elif modify_deadline: modify_deadline = modify_deadline.datetime(self.event) if modify_deadline is not None and now() > modify_deadline: return False if self.event.settings.get('invoice_address_asked', as_type=bool): return True ask_names = self.event.settings.get('attendee_names_asked', as_type=bool) for cp in self.positions.all().prefetch_related('item__questions'): if (cp.item.admission and ask_names) or cp.item.questions.all(): return True return False # nothing there to modify @property def can_user_cancel(self) -> bool: """ Returns whether or not this order can be canceled by the user. """ positions = self.positions.all().select_related('item') cancelable = all([op.item.allow_cancel for op in positions]) return self.cancel_allowed() and self.event.settings.cancel_allow_user and cancelable @property def is_expired_by_time(self): return ( self.status == Order.STATUS_PENDING and self.expires < now() and not self.event.settings.get('payment_term_expire_automatically') ) @property def ticket_download_date(self): """ Returns the first date the tickets for this order can be downloaded or ``None`` if there is no restriction. """ dl_date = self.event.settings.get('ticket_download_date', as_type=RelativeDateWrapper) if dl_date: if self.event.has_subevents: dl_date = min([ dl_date.datetime(se) for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True)) ]) else: dl_date = dl_date.datetime(self.event) return dl_date @property def payment_term_last(self): tz = pytz.timezone(self.event.settings.timezone) term_last = self.event.settings.get('payment_term_last', as_type=RelativeDateWrapper) if term_last: if self.event.has_subevents: term_last = min([ term_last.datetime(se).date() for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True)) ]) else: term_last = term_last.datetime(self.event).date() term_last = make_aware(datetime.combine( term_last, time(hour=23, minute=59, second=59) ), tz) return term_last def _can_be_paid(self, count_waitinglist=True) -> Union[bool, str]: error_messages = { 'late_lastdate': _("The payment can not be accepted as the last date of payments configured in the " "payment settings is over."), 'late': _("The payment can not be accepted as it the order is expired and you configured that no late " "payments should be accepted in the payment settings."), } term_last = self.payment_term_last if term_last: if now() > term_last: return error_messages['late_lastdate'] if self.status == self.STATUS_PENDING: return True if not self.event.settings.get('payment_term_accept_late'): return error_messages['late'] return self._is_still_available(count_waitinglist=count_waitinglist) def _is_still_available(self, now_dt: datetime=None, count_waitinglist=True) -> Union[bool, str]: error_messages = { 'unavailable': _('The ordered product "{item}" is no longer available.'), } now_dt = now_dt or now() positions = self.positions.all().select_related('item', 'variation') quota_cache = {} try: for i, op in enumerate(positions): quotas = list(op.quotas) if len(quotas) == 0: raise Quota.QuotaExceededException(error_messages['unavailable'].format( item=str(op.item) + (' - ' + str(op.variation) if op.variation else '') )) for quota in quotas: if quota.id not in quota_cache: quota_cache[quota.id] = quota quota.cached_availability = quota.availability(now_dt, count_waitinglist=count_waitinglist)[1] else: # Use cached version quota = quota_cache[quota.id] if quota.cached_availability is not None: quota.cached_availability -= 1 if quota.cached_availability < 0: # This quota is sold out/currently unavailable, so do not sell this at all raise Quota.QuotaExceededException(error_messages['unavailable'].format( item=str(op.item) + (' - ' + str(op.variation) if op.variation else '') )) except Quota.QuotaExceededException as e: return str(e) return True def send_mail(self, subject: str, template: Union[str, LazyI18nString], context: Dict[str, Any]=None, log_entry_type: str='pretix.event.order.email.sent', user: User=None, headers: dict=None, sender: str=None, invoices: list=None): """ Sends an email to the user that placed this order. Basically, this method does two things: * Call ``pretix.base.services.mail.mail`` with useful values for the ``event``, ``locale``, ``recipient`` and ``order`` parameters. * Create a ``LogEntry`` with the email contents. :param subject: Subject of the email :param template: LazyI18nString or template filename, see ``pretix.base.services.mail.mail`` for more details :param context: Dictionary to use for rendering the template :param log_entry_type: Key to be used for the log entry :param user: Administrative user who triggered this mail to be sent :param headers: Dictionary with additional mail headers :param sender: Custom email sender. """ from pretix.base.services.mail import SendMailException, mail, render_mail if not self.email: return with language(self.locale): recipient = self.email try: email_content = render_mail(template, context)[0] mail( recipient, subject, template, context, self.event, self.locale, self, headers, sender, invoices=invoices ) except SendMailException: raise else: self.log_action( log_entry_type, user=user, data={ 'subject': subject, 'message': email_content, 'recipient': recipient, 'invoices': [i.pk for i in invoices] if invoices else [] } ) def answerfile_name(instance, filename: str) -> str: secret = get_random_string(length=32, allowed_chars=string.ascii_letters + string.digits) event = (instance.cartposition if instance.cartposition else instance.orderposition.order).event return 'cachedfiles/answers/{org}/{ev}/{secret}.{filename}'.format( org=event.organizer.slug, ev=event.slug, secret=secret, filename=escape_uri_path(filename), ) class QuestionAnswer(models.Model): """ The answer to a Question, connected to an OrderPosition or CartPosition. :param orderposition: The order position this is related to, or null if this is related to a cart position. :type orderposition: OrderPosition :param cartposition: The cart position this is related to, or null if this is related to an order position. :type cartposition: CartPosition :param question: The question this is an answer for :type question: Question :param answer: The actual answer data :type answer: str """ orderposition = models.ForeignKey( 'OrderPosition', null=True, blank=True, related_name='answers' ) cartposition = models.ForeignKey( 'CartPosition', null=True, blank=True, related_name='answers' ) question = models.ForeignKey( Question, related_name='answers' ) options = models.ManyToManyField( QuestionOption, related_name='answers', blank=True ) answer = models.TextField() file = models.FileField( null=True, blank=True, upload_to=answerfile_name, max_length=255 ) @property def backend_file_url(self): if self.file: if self.orderposition: return reverse('control:event.order.download.answer', kwargs={ 'code': self.orderposition.order.code, 'event': self.orderposition.order.event.slug, 'organizer': self.orderposition.order.event.organizer.slug, 'answer': self.pk, }) return "" @property def frontend_file_url(self): from pretix.multidomain.urlreverse import eventreverse if self.file: if self.orderposition: url = eventreverse(self.orderposition.order.event, 'presale:event.order.download.answer', kwargs={ 'order': self.orderposition.order.code, 'secret': self.orderposition.order.secret, 'answer': self.pk, }) else: url = eventreverse(self.cartposition.event, 'presale:event.cart.download.answer', kwargs={ 'answer': self.pk, }) return url return "" @property def file_name(self): return self.file.name.split('.', 1)[-1] def __str__(self): if self.question.type == Question.TYPE_BOOLEAN and self.answer == "True": return str(_("Yes")) elif self.question.type == Question.TYPE_BOOLEAN and self.answer == "False": return str(_("No")) elif self.question.type == Question.TYPE_FILE: return str(_("")) elif self.question.type == Question.TYPE_DATETIME and self.answer: try: d = dateutil.parser.parse(self.answer) if self.orderposition: tz = pytz.timezone(self.orderposition.order.event.settings.timezone) d = d.astimezone(tz) return date_format(d, "SHORT_DATETIME_FORMAT") except ValueError: return self.answer elif self.question.type == Question.TYPE_DATE and self.answer: try: d = dateutil.parser.parse(self.answer) return date_format(d, "SHORT_DATE_FORMAT") except ValueError: return self.answer elif self.question.type == Question.TYPE_TIME and self.answer: try: d = dateutil.parser.parse(self.answer) return date_format(d, "TIME_FORMAT") except ValueError: return self.answer else: return self.answer def save(self, *args, **kwargs): if self.orderposition and self.cartposition: raise ValueError('QuestionAnswer cannot be linked to an order and a cart position at the same time.') if self.orderposition: self.orderposition.order.touch() super().save(*args, **kwargs) def delete(self, **kwargs): if self.orderposition: self.orderposition.order.touch() super().delete(**kwargs) class AbstractPosition(models.Model): """ A position can either be one line of an order or an item placed in a cart. :param subevent: The date in the event series, if event series are enabled :type subevent: SubEvent :param item: The selected item :type item: Item :param variation: The selected ItemVariation or null, if the item has no variations :type variation: ItemVariation :param datetime: The datetime this item was put into the cart :type datetime: datetime :param expires: The date until this item is guaranteed to be reserved :type expires: datetime :param price: The price of this item :type price: decimal.Decimal :param attendee_name: The attendee's name, if entered. :type attendee_name: str :param attendee_email: The attendee's email, if entered. :type attendee_email: str :param voucher: A voucher that has been applied to this sale :type voucher: Voucher :param meta_info: Additional meta information on the position, JSON-encoded. :type meta_info: str """ subevent = models.ForeignKey( SubEvent, null=True, blank=True, on_delete=models.CASCADE, verbose_name=pgettext_lazy("subevent", "Date"), ) item = models.ForeignKey( Item, verbose_name=_("Item"), on_delete=models.PROTECT ) variation = models.ForeignKey( ItemVariation, null=True, blank=True, verbose_name=_("Variation"), on_delete=models.PROTECT ) price = models.DecimalField( decimal_places=2, max_digits=10, verbose_name=_("Price") ) attendee_name = models.CharField( max_length=255, verbose_name=_("Attendee name"), blank=True, null=True, help_text=_("Empty, if this product is not an admission ticket") ) attendee_email = models.EmailField( verbose_name=_("Attendee email"), blank=True, null=True, help_text=_("Empty, if this product is not an admission ticket") ) voucher = models.ForeignKey( 'Voucher', null=True, blank=True ) addon_to = models.ForeignKey( 'self', null=True, blank=True, on_delete=models.CASCADE, related_name='addons' ) meta_info = models.TextField( verbose_name=_("Meta information"), null=True, blank=True ) class Meta: abstract = True @property def meta_info_data(self): if self.meta_info: return json.loads(self.meta_info) else: return {} def cache_answers(self, all=True): """ Creates two properties on the object. (1) answ: a dictionary of question.id → answer string (2) questions: a list of Question objects, extended by an 'answer' property """ self.answ = {} for a in self.answers.all(): self.answ[a.question_id] = a # We need to clone our question objects, otherwise we will override the cached # answers of other items in the same cart if the question objects have been # selected via prefetch_related if not all: if hasattr(self.item, 'questions_to_ask'): self.questions = list(copy.copy(q) for q in self.item.questions_to_ask) else: self.questions = list(copy.copy(q) for q in self.item.questions.filter(ask_during_checkin=False)) else: self.questions = list(copy.copy(q) for q in self.item.questions.all()) for q in self.questions: if q.id in self.answ: q.answer = self.answ[q.id] else: q.answer = "" @property def net_price(self): return self.price - self.tax_value @property def quotas(self): return (self.item.quotas.filter(subevent=self.subevent) if self.variation is None else self.variation.quotas.filter(subevent=self.subevent)) class OrderFee(models.Model): """ An OrderFee objet represents a fee that is added to the order total independently of the actual positions. This might for example be a payment or a shipping fee. """ FEE_TYPE_PAYMENT = "payment" FEE_TYPE_SHIPPING = "shipping" FEE_TYPE_SERVICE = "service" FEE_TYPE_OTHER = "other" FEE_TYPE_GIFTCARD = "giftcard" FEE_TYPES = ( (FEE_TYPE_PAYMENT, _("Payment fee")), (FEE_TYPE_SHIPPING, _("Shipping fee")), (FEE_TYPE_SERVICE, _("Service fee")), (FEE_TYPE_OTHER, _("Other fees")), (FEE_TYPE_GIFTCARD, _("Gift card")), ) value = models.DecimalField( decimal_places=2, max_digits=10, verbose_name=_("Value") ) order = models.ForeignKey( Order, verbose_name=_("Order"), related_name='fees', on_delete=models.PROTECT ) fee_type = models.CharField( max_length=100, choices=FEE_TYPES ) description = models.CharField(max_length=190, blank=True) internal_type = models.CharField(max_length=255, blank=True) tax_rate = models.DecimalField( max_digits=7, decimal_places=2, verbose_name=_('Tax rate') ) tax_rule = models.ForeignKey( 'TaxRule', on_delete=models.PROTECT, null=True, blank=True ) tax_value = models.DecimalField( max_digits=10, decimal_places=2, verbose_name=_('Tax value') ) @property def net_value(self): return self.value - self.tax_value def __str__(self): if self.description: return '{} - {}'.format(self.get_fee_type_display(), self.description) else: return self.get_fee_type_display() def __repr__(self): return '' % ( self.fee_type, self.value ) def _calculate_tax(self): try: ia = self.order.invoice_address except InvoiceAddress.DoesNotExist: ia = None if not self.tax_rule and self.fee_type == "payment" and self.order.event.settings.tax_rate_default: self.tax_rule = self.order.event.settings.tax_rate_default if self.tax_rule: if self.tax_rule.tax_applicable(ia): tax = self.tax_rule.tax(self.value, base_price_is='gross') self.tax_rate = tax.rate self.tax_value = tax.tax else: self.tax_value = Decimal('0.00') self.tax_rate = Decimal('0.00') else: self.tax_value = Decimal('0.00') self.tax_rate = Decimal('0.00') def save(self, *args, **kwargs): if self.tax_rate is None: self._calculate_tax() self.order.touch() return super().save(*args, **kwargs) def delete(self, **kwargs): self.order.touch() super().delete(**kwargs) class OrderPosition(AbstractPosition): """ An OrderPosition is one line of an order, representing one ordered item of a specified type (or variation). This has all properties of AbstractPosition. :param order: The order this position is a part of :type order: Order """ positionid = models.PositiveIntegerField(default=1) order = models.ForeignKey( Order, verbose_name=_("Order"), related_name='positions', on_delete=models.PROTECT ) tax_rate = models.DecimalField( max_digits=7, decimal_places=2, verbose_name=_('Tax rate') ) tax_rule = models.ForeignKey( 'TaxRule', on_delete=models.PROTECT, null=True, blank=True ) tax_value = models.DecimalField( max_digits=10, decimal_places=2, verbose_name=_('Tax value') ) secret = models.CharField(max_length=64, default=generate_position_secret, db_index=True) pseudonymization_id = models.CharField( max_length=16, unique=True, db_index=True ) class Meta: verbose_name = _("Order position") verbose_name_plural = _("Order positions") ordering = ("positionid", "id") @cached_property def sort_key(self): return self.addon_to.positionid if self.addon_to else self.positionid, self.addon_to_id or 0 @classmethod def transform_cart_positions(cls, cp: List, order) -> list: from . import Voucher ops = [] cp_mapping = {} # The sorting key ensures that all addons come directly after the position they refer to for i, cartpos in enumerate(sorted(cp, key=lambda c: (c.addon_to_id or c.pk, c.addon_to_id or 0))): op = OrderPosition(order=order) for f in AbstractPosition._meta.fields: if f.name == 'addon_to': setattr(op, f.name, cp_mapping.get(cartpos.addon_to_id)) else: setattr(op, f.name, getattr(cartpos, f.name)) op._calculate_tax() op.positionid = i + 1 op.save() cp_mapping[cartpos.pk] = op for answ in cartpos.answers.all(): answ.orderposition = op answ.cartposition = None answ.save() if cartpos.voucher: Voucher.objects.filter(pk=cartpos.voucher.pk).update(redeemed=F('redeemed') + 1) cartpos.voucher.log_action('pretix.voucher.redeemed', { 'order_code': order.code }) # Delete afterwards. Deleting in between might cause deletion of things related to add-ons # due to the deletion cascade. for cartpos in cp: cartpos.delete() return ops def __str__(self): if self.variation: return '#{} – {} – {}'.format( self.positionid, str(self.item), str(self.variation) ) return '#{} – {}'.format(self.positionid, str(self.item)) def __repr__(self): return '' % ( self.item.id, self.variation.id if self.variation else 0, self.order_id ) def _calculate_tax(self): self.tax_rule = self.item.tax_rule try: ia = self.order.invoice_address except InvoiceAddress.DoesNotExist: ia = None if self.tax_rule: if self.tax_rule.tax_applicable(ia): tax = self.tax_rule.tax(self.price, base_price_is='gross') self.tax_rate = tax.rate self.tax_value = tax.tax else: self.tax_value = Decimal('0.00') self.tax_rate = Decimal('0.00') else: self.tax_value = Decimal('0.00') self.tax_rate = Decimal('0.00') def save(self, *args, **kwargs): if self.tax_rate is None: self._calculate_tax() self.order.touch() if self.pk is None: while OrderPosition.objects.filter(secret=self.secret).exists(): self.secret = generate_position_secret() if not self.pseudonymization_id: self.assign_pseudonymization_id() return super().save(*args, **kwargs) def assign_pseudonymization_id(self): # This omits some character pairs completely because they are hard to read even on screens (1/I and O/0) # and includes only one of two characters for some pairs because they are sometimes hard to distinguish in # handwriting (2/Z, 4/A, 5/S, 6/G). This allows for better detection e.g. in incoming wire transfers that # might include OCR'd handwritten text charset = list('ABCDEFGHJKLMNPQRSTUVWXYZ3789') while True: code = get_random_string(length=10, allowed_chars=charset) if not OrderPosition.objects.filter(pseudonymization_id=code).exists(): self.pseudonymization_id = code return class CartPosition(AbstractPosition): """ A cart position is similar to an order line, except that it is not yet part of a binding order but just placed by some user in his or her cart. It therefore normally has a much shorter expiration time than an ordered position, but still blocks an item in the quota pool as we do not want to throw out users while they're clicking through the checkout process. This has all properties of AbstractPosition. :param event: The event this belongs to :type event: Event :param cart_id: The user session that contains this cart position :type cart_id: str """ event = models.ForeignKey( Event, verbose_name=_("Event") ) cart_id = models.CharField( max_length=255, null=True, blank=True, db_index=True, verbose_name=_("Cart ID (e.g. session key)") ) datetime = models.DateTimeField( verbose_name=_("Date"), auto_now_add=True ) expires = models.DateTimeField( verbose_name=_("Expiration date"), db_index=True ) includes_tax = models.BooleanField( default=True ) class Meta: verbose_name = _("Cart position") verbose_name_plural = _("Cart positions") def __repr__(self): return '' % ( self.item.id, self.variation.id if self.variation else 0, self.cart_id ) @property def tax_rate(self): if self.includes_tax: return self.item.tax(self.price, base_price_is='gross').rate else: return Decimal('0.00') @property def tax_value(self): if self.includes_tax: return self.item.tax(self.price, base_price_is='gross').tax else: return Decimal('0.00') class InvoiceAddress(models.Model): last_modified = models.DateTimeField(auto_now=True) order = models.OneToOneField(Order, null=True, blank=True, related_name='invoice_address') is_business = models.BooleanField(default=False, verbose_name=_('Business customer')) company = models.CharField(max_length=255, blank=True, verbose_name=_('Company name')) name = models.CharField(max_length=255, verbose_name=_('Full name'), blank=True) street = models.TextField(verbose_name=_('Address'), blank=False) zipcode = models.CharField(max_length=30, verbose_name=_('ZIP code'), blank=False) city = models.CharField(max_length=255, verbose_name=_('City'), blank=False) country_old = models.CharField(max_length=255, verbose_name=_('Country'), blank=False) country = CountryField(verbose_name=_('Country'), blank=False, blank_label=_('Select country')) vat_id = models.CharField(max_length=255, blank=True, verbose_name=_('VAT ID'), help_text=_('Only for business customers within the EU.')) vat_id_validated = models.BooleanField(default=False) internal_reference = models.TextField( verbose_name=_('Internal reference'), help_text=_('This reference will be printed on your invoice for your convenience.'), blank=True ) def save(self, **kwargs): if self.order: self.order.touch() super().save(**kwargs) def cachedticket_name(instance, filename: str) -> str: secret = get_random_string(length=16, allowed_chars=string.ascii_letters + string.digits) return 'tickets/{org}/{ev}/{code}-{no}-{prov}-{secret}.dat'.format( org=instance.order_position.order.event.organizer.slug, ev=instance.order_position.order.event.slug, prov=instance.provider, no=instance.order_position.positionid, code=instance.order_position.order.code, secret=secret, ext=os.path.splitext(filename)[1] ) def cachedcombinedticket_name(instance, filename: str) -> str: secret = get_random_string(length=16, allowed_chars=string.ascii_letters + string.digits) return 'tickets/{org}/{ev}/{code}-{prov}-{secret}.dat'.format( org=instance.order.event.organizer.slug, ev=instance.order.event.slug, prov=instance.provider, code=instance.order.code, secret=secret ) class CachedTicket(models.Model): order_position = models.ForeignKey(OrderPosition, on_delete=models.CASCADE) provider = models.CharField(max_length=255) type = models.CharField(max_length=255) extension = models.CharField(max_length=255) file = models.FileField(null=True, blank=True, upload_to=cachedticket_name, max_length=255) created = models.DateTimeField(auto_now_add=True) class CachedCombinedTicket(models.Model): order = models.ForeignKey(Order, on_delete=models.CASCADE) provider = models.CharField(max_length=255) type = models.CharField(max_length=255) extension = models.CharField(max_length=255) file = models.FileField(null=True, blank=True, upload_to=cachedcombinedticket_name, max_length=255) created = models.DateTimeField(auto_now_add=True) @receiver(post_delete, sender=CachedTicket) def cachedticket_delete(sender, instance, **kwargs): if instance.file: # Pass false so FileField doesn't save the model. instance.file.delete(False) @receiver(post_delete, sender=CachedCombinedTicket) def cachedcombinedticket_delete(sender, instance, **kwargs): if instance.file: # Pass false so FileField doesn't save the model. instance.file.delete(False) @receiver(post_delete, sender=QuestionAnswer) def answer_delete(sender, instance, **kwargs): if instance.file: # Pass false so FileField doesn't save the model. instance.file.delete(False)