Files
@ eb5dd5903697
Branch filter:
Location: symposion_app/registrasion/models.py - annotation
eb5dd5903697
17.8 KiB
text/x-python
Merge branch 'fix_cart'
Resolves #13.
Resolves #13.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 | d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 236c61eefa0d d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 05923a9a8f58 d9e433659d01 236c61eefa0d d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 be277c17d22d be277c17d22d be277c17d22d be277c17d22d be277c17d22d d2d2a1b0ecdd 3a6b4125e974 3a6b4125e974 89cba55807c1 89cba55807c1 89cba55807c1 89cba55807c1 89cba55807c1 89cba55807c1 236c61eefa0d 236c61eefa0d d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 0d458bea068e 0d458bea068e 0d458bea068e ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 224878a10ce3 0d458bea068e 224878a10ce3 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 b13e6f7ce2c2 b13e6f7ce2c2 b13e6f7ce2c2 b13e6f7ce2c2 cc4249083219 cc4249083219 b13e6f7ce2c2 cc4249083219 cc4249083219 d9e433659d01 224878a10ce3 224878a10ce3 224878a10ce3 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 224878a10ce3 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 99f4b8dfe09a 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 1b7d8a60c119 2e89bc48871f d9e433659d01 d9e433659d01 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 2e89bc48871f 1b7d8a60c119 99f4b8dfe09a 2e89bc48871f 2e89bc48871f 2e89bc48871f d9e433659d01 d9e433659d01 224878a10ce3 224878a10ce3 2e89bc48871f d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 2e89bc48871f ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 2e89bc48871f ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 2e89bc48871f ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 224878a10ce3 224878a10ce3 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 224878a10ce3 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 eebf9e81f5b7 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 eebf9e81f5b7 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 eebf9e81f5b7 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 ba0682a5f932 d9e433659d01 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 ba0682a5f932 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 b65223aaa1ea d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 d9e433659d01 224878a10ce3 224878a10ce3 224878a10ce3 cf85af771983 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 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 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 d9e433659d01 d9e433659d01 d9e433659d01 | from __future__ import unicode_literals
import datetime
import itertools
from django.core.exceptions import ValidationError
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)
class AttendeeProfileBase(models.Model):
''' Information for an attendee's badge and related preferences.
Subclass this in your Django site to ask for attendee information in your
registration progess.
'''
objects = InheritanceManager()
@classmethod
def name_field(cls):
''' This is used to pre-fill the attendee's name from the
speaker profile. If it's None, that functionality is disabled. '''
return None
attendee = models.OneToOneField(Attendee, on_delete=models.CASCADE)
# Inventory Models
@python_2_unicode_compatible
class Category(models.Model):
''' Registration product categories '''
class Meta:
verbose_name_plural = _("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"),
)
limit_per_user = models.PositiveIntegerField(
null=True,
blank=True,
verbose_name=_("Limit per user"),
help_text=_("The total number of items from this category one "
"attendee may purchase."),
)
required = models.BooleanField(
blank=True,
help_text=_("If enabled, a user must select an "
"item from this category."),
)
order = models.PositiveIntegerField(
verbose_name=("Display order"),
)
render_type = models.IntegerField(
choices=CATEGORY_RENDER_TYPES,
verbose_name=_("Render type"),
help_text=_("The registration form will render this category in this "
"style."),
)
@python_2_unicode_compatible
class Product(models.Model):
''' Registration products '''
def __str__(self):
return "%s - %s" % (self.category.name, self.name)
name = models.CharField(
max_length=65,
verbose_name=_("Name"),
)
description = models.CharField(
max_length=255,
verbose_name=_("Description"),
null=True,
blank=True,
)
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(
null=True,
blank=True,
verbose_name=_("Limit per user"),
)
reservation_duration = models.DurationField(
default=datetime.timedelta(hours=1),
verbose_name=_("Reservation duration"),
help_text=_("The length of time this product will be reserved before "
"it is released for someone else to purchase."),
)
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
@classmethod
def normalise_code(cls, code):
return code.upper()
def save(self, *a, **k):
''' Normalise the voucher code to be uppercase '''
self.code = self.normalise_code(self.code)
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
def effects(self):
''' Returns all of the effects of this discount. '''
products = self.discountforproduct_set.all()
categories = self.discountforcategory_set.all()
return itertools.chain(products, categories)
description = models.CharField(
max_length=255,
verbose_name=_("Description"),
help_text=_("A description of this discount. This will be included on "
"invoices where this discount is applied."),
)
@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"),
help_text=_("This discount will only be available after this time."),
)
end_time = models.DateTimeField(
null=True,
blank=True,
verbose_name=_("End time"),
help_text=_("This discount will only be available before this time."),
)
limit = models.PositiveIntegerField(
null=True,
blank=True,
verbose_name=_("Limit"),
help_text=_("This discount may only be applied this many times."),
)
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"),
help_text=_("If one of these products are purchased, the discounts "
"below will be enabled."),
)
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.description
def effects(self):
''' Returns all of the items enabled by this condition. '''
return itertools.chain(self.products.all(), self.categories.all())
description = models.CharField(max_length=255)
mandatory = models.BooleanField(
default=False,
help_text=_("If there is at least one mandatory condition defined on "
"a product or category, all such conditions must be met. "
"Otherwise, at least one non-mandatory condition must be "
"met."),
)
products = models.ManyToManyField(
Product,
blank=True,
help_text=_("Products that are enabled if this condition is met."),
)
categories = models.ManyToManyField(
Category,
blank=True,
help_text=_("Categories whose products are enabled if this condition "
"is met."),
)
class TimeOrStockLimitEnablingCondition(EnablingConditionBase):
''' Registration product ceilings '''
class Meta:
verbose_name = _("ceiling")
start_time = models.DateTimeField(
null=True,
blank=True,
help_text=_("Products included in this condition will only be "
"available after this time."),
)
end_time = models.DateTimeField(
null=True,
blank=True,
help_text=_("Products included in this condition will only be "
"available before this time."),
)
limit = models.PositiveIntegerField(
null=True,
blank=True,
help_text=_("The number of items under this grouping that can be "
"purchased."),
)
@python_2_unicode_compatible
class ProductEnablingCondition(EnablingConditionBase):
''' The condition is met because a specific product is purchased. '''
def __str__(self):
return "Enabled by products: " + str(self.enabling_products.all())
enabling_products = models.ManyToManyField(
Product,
help_text=_("If one of these products are purchased, this condition "
"is met."),
)
@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: " + str(self.enabling_category)
enabling_category = models.ForeignKey(
Category,
help_text=_("If a product from this category is purchased, this "
"condition is met."),
)
@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)
released = models.BooleanField(default=False) # Refunds etc
@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) & Q(released=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)
|