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recalculate_discounts now uses the available_discounts function from controllers.discount.
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d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 | from __future__ import unicode_literals
import datetime
from django.core.exceptions import ValidationError
from django.core.exceptions import ObjectDoesNotExist
from django.contrib.auth.models import User
from django.db import models
from django.db.models import F, Q
from django.utils import timezone
from django.utils.encoding import python_2_unicode_compatible
from django.utils.translation import ugettext_lazy as _
from model_utils.managers import InheritanceManager
# User models
@python_2_unicode_compatible
class Attendee(models.Model):
''' Miscellaneous user-related data. '''
def __str__(self):
return "%s" % self.user
@staticmethod
def get_instance(user):
''' Returns the instance of attendee for the given user, or creates
a new one. '''
attendees = Attendee.objects.filter(user=user)
if len(attendees) > 0:
return attendees[0]
else:
attendee = Attendee(user=user)
attendee.save()
return attendee
user = models.OneToOneField(User, on_delete=models.CASCADE)
# Badge/profile is linked
completed_registration = models.BooleanField(default=False)
highest_complete_category = models.IntegerField(default=0)
@python_2_unicode_compatible
class BadgeAndProfile(models.Model):
''' Information for an attendee's badge and related preferences '''
def __str__(self):
return "Badge for: %s of %s" % (self.name, self.company)
@staticmethod
def get_instance(attendee):
''' Returns either None, or the instance that belongs
to this attendee. '''
try:
return BadgeAndProfile.objects.get(attendee=attendee)
except ObjectDoesNotExist:
return None
attendee = models.OneToOneField(Attendee, on_delete=models.CASCADE)
# Things that appear on badge
name = models.CharField(
verbose_name="Your name (for your conference nametag)",
max_length=64,
help_text="Your name, as you'd like it to appear on your badge. ",
)
company = models.CharField(
max_length=64,
help_text="The name of your company, as you'd like it on your badge",
blank=True,
)
free_text_1 = models.CharField(
max_length=64,
verbose_name="Free text line 1",
help_text="A line of free text that will appear on your badge. Use "
"this for your Twitter handle, IRC nick, your preferred "
"pronouns or anything else you'd like people to see on "
"your badge.",
blank=True,
)
free_text_2 = models.CharField(
max_length=64,
verbose_name="Free text line 2",
blank=True,
)
# Other important Information
name_per_invoice = models.CharField(
verbose_name="Your legal name (for invoicing purposes)",
max_length=64,
help_text="If your legal name is different to the name on your badge, "
"fill this in, and we'll put it on your invoice. Otherwise, "
"leave it blank.",
blank=True,
)
of_legal_age = models.BooleanField(
default=False,
verbose_name="18+?",
blank=True,
)
dietary_requirements = models.CharField(
max_length=256,
blank=True,
)
accessibility_requirements = models.CharField(
max_length=256,
blank=True,
)
gender = models.CharField(
max_length=64,
blank=True,
)
# Inventory Models
@python_2_unicode_compatible
class Category(models.Model):
''' Registration product categories '''
def __str__(self):
return self.name
RENDER_TYPE_RADIO = 1
RENDER_TYPE_QUANTITY = 2
CATEGORY_RENDER_TYPES = [
(RENDER_TYPE_RADIO, _("Radio button")),
(RENDER_TYPE_QUANTITY, _("Quantity boxes")),
]
name = models.CharField(max_length=65, verbose_name=_("Name"))
description = models.CharField(max_length=255,
verbose_name=_("Description"))
required = models.BooleanField(blank=True)
order = models.PositiveIntegerField(verbose_name=("Display order"))
render_type = models.IntegerField(choices=CATEGORY_RENDER_TYPES,
verbose_name=_("Render type"))
@python_2_unicode_compatible
class Product(models.Model):
''' Registration products '''
def __str__(self):
return self.name
name = models.CharField(max_length=65, verbose_name=_("Name"))
description = models.CharField(max_length=255,
verbose_name=_("Description"))
category = models.ForeignKey(Category, verbose_name=_("Product category"))
price = models.DecimalField(max_digits=8,
decimal_places=2,
verbose_name=_("Price"))
limit_per_user = models.PositiveIntegerField(
blank=True,
verbose_name=_("Limit per user"))
reservation_duration = models.DurationField(
default=datetime.timedelta(hours=1),
verbose_name=_("Reservation duration"))
order = models.PositiveIntegerField(verbose_name=("Display order"))
@python_2_unicode_compatible
class Voucher(models.Model):
''' Registration vouchers '''
# Vouchers reserve a cart for a fixed amount of time, so that
# items may be added without the voucher being swiped by someone else
RESERVATION_DURATION = datetime.timedelta(hours=1)
def __str__(self):
return "Voucher for %s" % self.recipient
def save(self, *a, **k):
''' Normalise the voucher code to be uppercase '''
self.code = self.code.upper()
super(Voucher, self).save(*a, **k)
recipient = models.CharField(max_length=64, verbose_name=_("Recipient"))
code = models.CharField(max_length=16,
unique=True,
verbose_name=_("Voucher code"))
limit = models.PositiveIntegerField(verbose_name=_("Voucher use limit"))
# Product Modifiers
@python_2_unicode_compatible
class DiscountBase(models.Model):
''' Base class for discounts. Each subclass has controller code that
determines whether or not the given discount is available to be added to
the current cart. '''
objects = InheritanceManager()
def __str__(self):
return "Discount: " + self.description
description = models.CharField(max_length=255,
verbose_name=_("Description"))
@python_2_unicode_compatible
class DiscountForProduct(models.Model):
''' Represents a discount on an individual product. Each Discount can
contain multiple products and categories. Discounts can either be a
percentage or a fixed amount, but not both. '''
def __str__(self):
if self.percentage:
return "%s%% off %s" % (self.percentage, self.product)
elif self.price:
return "$%s off %s" % (self.price, self.product)
def clean(self):
if self.percentage is None and self.price is None:
raise ValidationError(
_("Discount must have a percentage or a price."))
elif self.percentage is not None and self.price is not None:
raise ValidationError(
_("Discount may only have a percentage or only a price."))
prods = DiscountForProduct.objects.filter(
discount=self.discount,
product=self.product)
cats = DiscountForCategory.objects.filter(
discount=self.discount,
category=self.product.category)
if len(prods) > 1:
raise ValidationError(
_("You may only have one discount line per product"))
if len(cats) != 0:
raise ValidationError(
_("You may only have one discount for "
"a product or its category"))
discount = models.ForeignKey(DiscountBase, on_delete=models.CASCADE)
product = models.ForeignKey(Product, on_delete=models.CASCADE)
percentage = models.DecimalField(
max_digits=4, decimal_places=1, null=True, blank=True)
price = models.DecimalField(
max_digits=8, decimal_places=2, null=True, blank=True)
quantity = models.PositiveIntegerField()
@python_2_unicode_compatible
class DiscountForCategory(models.Model):
''' Represents a discount for a category of products. Each discount can
contain multiple products. Category discounts can only be a percentage. '''
def __str__(self):
return "%s%% off %s" % (self.percentage, self.category)
def clean(self):
prods = DiscountForProduct.objects.filter(
discount=self.discount,
product__category=self.category)
cats = DiscountForCategory.objects.filter(
discount=self.discount,
category=self.category)
if len(prods) != 0:
raise ValidationError(
_("You may only have one discount for "
"a product or its category"))
if len(cats) > 1:
raise ValidationError(
_("You may only have one discount line per category"))
discount = models.ForeignKey(DiscountBase, on_delete=models.CASCADE)
category = models.ForeignKey(Category, on_delete=models.CASCADE)
percentage = models.DecimalField(
max_digits=4,
decimal_places=1)
quantity = models.PositiveIntegerField()
class TimeOrStockLimitDiscount(DiscountBase):
''' Discounts that are generally available, but are limited by timespan or
usage count. This is for e.g. Early Bird discounts. '''
class Meta:
verbose_name = _("Promotional discount")
start_time = models.DateTimeField(
null=True, blank=True, verbose_name=_("Start time"))
end_time = models.DateTimeField(
null=True, blank=True, verbose_name=_("End time"))
limit = models.PositiveIntegerField(
null=True, blank=True, verbose_name=_("Limit"))
class VoucherDiscount(DiscountBase):
''' Discounts that are enabled when a voucher code is in the current
cart. '''
voucher = models.OneToOneField(
Voucher,
on_delete=models.CASCADE,
verbose_name=_("Voucher"))
class IncludedProductDiscount(DiscountBase):
''' Discounts that are enabled because another product has been purchased.
e.g. A conference ticket includes a free t-shirt. '''
class Meta:
verbose_name = _("Product inclusion")
enabling_products = models.ManyToManyField(
Product,
verbose_name=_("Including product"))
class RoleDiscount(object):
''' Discounts that are enabled because the active user has a specific
role. This is for e.g. volunteers who can get a discount ticket. '''
# TODO: implement RoleDiscount
pass
@python_2_unicode_compatible
class EnablingConditionBase(models.Model):
''' This defines a condition which allows products or categories to
be made visible. If there is at least one mandatory enabling condition
defined on a Product or Category, it will only be enabled if *all*
mandatory conditions are met, otherwise, if there is at least one enabling
condition defined on a Product or Category, it will only be enabled if at
least one condition is met. '''
objects = InheritanceManager()
def __str__(self):
return self.name
description = models.CharField(max_length=255)
mandatory = models.BooleanField(default=False)
products = models.ManyToManyField(Product, blank=True)
categories = models.ManyToManyField(Category, blank=True)
class TimeOrStockLimitEnablingCondition(EnablingConditionBase):
''' Registration product ceilings '''
start_time = models.DateTimeField(null=True, verbose_name=_("Start time"))
end_time = models.DateTimeField(null=True, verbose_name=_("End time"))
limit = models.PositiveIntegerField(null=True, verbose_name=_("Limit"))
@python_2_unicode_compatible
class ProductEnablingCondition(EnablingConditionBase):
''' The condition is met because a specific product is purchased. '''
def __str__(self):
return "Enabled by product: "
enabling_products = models.ManyToManyField(Product)
@python_2_unicode_compatible
class CategoryEnablingCondition(EnablingConditionBase):
''' The condition is met because a product in a particular product is
purchased. '''
def __str__(self):
return "Enabled by product in category: "
enabling_category = models.ForeignKey(Category)
@python_2_unicode_compatible
class VoucherEnablingCondition(EnablingConditionBase):
''' The condition is met because a Voucher is present. This is for e.g.
enabling sponsor tickets. '''
def __str__(self):
return "Enabled by voucher: %s" % self.voucher
voucher = models.OneToOneField(Voucher)
# @python_2_unicode_compatible
class RoleEnablingCondition(object):
''' The condition is met because the active user has a particular Role.
This is for e.g. enabling Team tickets. '''
# TODO: implement RoleEnablingCondition
pass
# Commerce Models
@python_2_unicode_compatible
class Cart(models.Model):
''' Represents a set of product items that have been purchased, or are
pending purchase. '''
def __str__(self):
return "%d rev #%d" % (self.id, self.revision)
user = models.ForeignKey(User)
# ProductItems (foreign key)
vouchers = models.ManyToManyField(Voucher, blank=True)
time_last_updated = models.DateTimeField()
reservation_duration = models.DurationField()
revision = models.PositiveIntegerField(default=1)
active = models.BooleanField(default=True)
@classmethod
def reserved_carts(cls):
''' Gets all carts that are 'reserved' '''
return Cart.objects.filter(
(Q(active=True) &
Q(time_last_updated__gt=(
timezone.now()-F('reservation_duration')
))) |
Q(active=False)
)
@python_2_unicode_compatible
class ProductItem(models.Model):
''' Represents a product-quantity pair in a Cart. '''
def __str__(self):
return "product: %s * %d in Cart: %s" % (
self.product, self.quantity, self.cart)
cart = models.ForeignKey(Cart)
product = models.ForeignKey(Product)
quantity = models.PositiveIntegerField()
@python_2_unicode_compatible
class DiscountItem(models.Model):
''' Represents a discount-product-quantity relation in a Cart. '''
def __str__(self):
return "%s: %s * %d in Cart: %s" % (
self.discount, self.product, self.quantity, self.cart)
cart = models.ForeignKey(Cart)
product = models.ForeignKey(Product)
discount = models.ForeignKey(DiscountBase)
quantity = models.PositiveIntegerField()
@python_2_unicode_compatible
class Invoice(models.Model):
''' An invoice. Invoices can be automatically generated when checking out
a Cart, in which case, it is attached to a given revision of a Cart. '''
def __str__(self):
return "Invoice #%d" % self.id
def clean(self):
if self.cart is not None and self.cart_revision is None:
raise ValidationError(
"If this is a cart invoice, it must have a revision")
# Invoice Number
user = models.ForeignKey(User)
cart = models.ForeignKey(Cart, null=True)
cart_revision = models.IntegerField(null=True)
# Line Items (foreign key)
void = models.BooleanField(default=False)
paid = models.BooleanField(default=False)
value = models.DecimalField(max_digits=8, decimal_places=2)
@python_2_unicode_compatible
class LineItem(models.Model):
''' Line items for an invoice. These are denormalised from the ProductItems
and DiscountItems that belong to a cart (for consistency), but also allow
for arbitrary line items when required. '''
def __str__(self):
return "Line: %s * %d @ %s" % (
self.description, self.quantity, self.price)
invoice = models.ForeignKey(Invoice)
description = models.CharField(max_length=255)
quantity = models.PositiveIntegerField()
price = models.DecimalField(max_digits=8, decimal_places=2)
@python_2_unicode_compatible
class Payment(models.Model):
''' A payment for an invoice. Each invoice can have multiple payments
attached to it.'''
def __str__(self):
return "Payment: ref=%s amount=%s" % (self.reference, self.amount)
invoice = models.ForeignKey(Invoice)
time = models.DateTimeField(default=timezone.now)
reference = models.CharField(max_length=64)
amount = models.DecimalField(max_digits=8, decimal_places=2)
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