+++ /dev/null
-# -*- coding: utf-8 -*-
-# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
-#
-from datetime import date, datetime
-from django.core.urlresolvers import reverse
-from django.db import models
-from django.utils.translation import ugettext_lazy as _, ugettext as __
-import getpaid
-from catalogue.models import Book
-from polls.models import Poll
-
-
-class Offer(models.Model):
- """ A fundraiser for a particular book. """
- author = models.CharField(_('author'), max_length=255)
- title = models.CharField(_('title'), max_length=255)
- slug = models.SlugField(_('slug'))
- description = models.TextField(_('description'), blank=True)
- target = models.DecimalField(_('target'), decimal_places=2, max_digits=10)
- start = models.DateField(_('start'), db_index=True)
- end = models.DateField(_('end'), db_index=True)
- due = models.DateField(_('due'),
- help_text=_('When will it be published if the money is raised.'))
- redakcja_url = models.URLField(_('redakcja URL'), blank=True)
- book = models.ForeignKey(Book, null=True, blank=True,
- help_text=_('Published book.'))
- cover = models.ImageField(_('Cover'), upload_to = 'funding/covers')
- poll = models.ForeignKey(Poll, help_text = _('Poll'), null = True, on_delete = models.SET_NULL)
-
- def cover_img_tag(self):
- return u'<img src="%s" />' % self.cover.url
- cover_img_tag.short_description = _('Cover preview')
- cover_img_tag.allow_tags = True
-
- class Meta:
- verbose_name = _('offer')
- verbose_name_plural = _('offers')
- ordering = ['-end']
-
- def __unicode__(self):
- return u"%s - %s" % (self.author, self.title)
-
- def get_absolute_url(self):
- return reverse('funding_offer', args=[self.slug])
-
- def is_current(self):
- return self.start <= date.today() <= self.end
-
- def is_win(self):
- return self.sum() >= self.target
-
- def remaining(self):
- if self.is_current():
- return None
- if self.is_win():
- return self.sum() - self.target
- else:
- return self.sum()
-
- @classmethod
- def current(cls):
- """ Returns current fundraiser or None. """
- today = date.today()
- objects = cls.objects.filter(start__lte=today, end__gte=today)
- try:
- return objects[0]
- except IndexError:
- return None
-
- @classmethod
- def past(cls):
- """ QuerySet for all current and past fundraisers. """
- today = date.today()
- return cls.objects.filter(end__lt=today)
-
- @classmethod
- def public(cls):
- """ QuerySet for all current and past fundraisers. """
- today = date.today()
- return cls.objects.filter(start__lte=today)
-
- def get_perks(self, amount=None):
- """ Finds all the perks for the offer.
-
- If amount is provided, returns the perks you get for it.
-
- """
- perks = Perk.objects.filter(
- models.Q(offer=self) | models.Q(offer=None)
- ).exclude(end_date__lt=date.today())
- if amount is not None:
- perks = perks.filter(price__lte=amount)
- return perks
-
- def funding_payed(self):
- """ QuerySet for all completed payments for the offer. """
- return Funding.payed().filter(offer=self)
-
- def sum(self):
- """ The money gathered. """
- return self.funding_payed().aggregate(s=models.Sum('amount'))['s'] or 0
-
-
-class Perk(models.Model):
- """ A perk offer.
-
- If no attached to a particular Offer, applies to all.
-
- """
- offer = models.ForeignKey(Offer, verbose_name=_('offer'), null=True, blank=True)
- price = models.DecimalField(_('price'), decimal_places=2, max_digits=10)
- name = models.CharField(_('name'), max_length=255)
- description = models.TextField(_('description'), blank=True)
- end_date = models.DateField(_('end date'), null=True, blank=True)
-
- class Meta:
- verbose_name = _('perk')
- verbose_name_plural = _('perks')
- ordering = ['-price']
-
- def __unicode__(self):
- return "%s (%s%s)" % (self.name, self.price, u" for %s" % self.offer if self.offer else "")
-
-
-class Funding(models.Model):
- """ A person paying in a fundraiser.
-
- The payment was completed if and only if payed_at is set.
-
- """
- offer = models.ForeignKey(Offer, verbose_name=_('offer'))
- name = models.CharField(_('name'), max_length=127, blank=True)
- email = models.EmailField(_('email'), blank=True)
- amount = models.DecimalField(_('amount'), decimal_places=2, max_digits=10)
- payed_at = models.DateTimeField(_('payed at'), null=True, blank=True, db_index=True)
- perks = models.ManyToManyField(Perk, verbose_name=_('perks'), blank=True)
-
- # Any additional info needed for perks?
-
- @classmethod
- def payed(cls):
- """ QuerySet for all completed payments. """
- return cls.objects.exclude(payed_at=None)
-
- class Meta:
- verbose_name = _('funding')
- verbose_name_plural = _('fundings')
- ordering = ['-payed_at']
-
- def __unicode__(self):
- return unicode(self.offer)
-
- def get_absolute_url(self):
- return reverse('funding_funding', args=[self.pk])
-
-# Register the Funding model with django-getpaid for payments.
-getpaid.register_to_payment(Funding, unique=False, related_name='payment')
-
-
-class Spent(models.Model):
- """ Some of the remaining money spent on a book. """
- book = models.ForeignKey(Book)
- amount = models.DecimalField(_('amount'), decimal_places=2, max_digits=10)
- timestamp = models.DateField(_('when'))
-
- class Meta:
- verbose_name = _('money spent on a book')
- verbose_name_plural = _('money spent on books')
- ordering = ['-timestamp']
-
- def __unicode__(self):
- return u"Spent: %s" % unicode(self.book)
-
-
-def new_payment_query_listener(sender, order=None, payment=None, **kwargs):
- """ Set payment details for getpaid. """
- payment.amount = order.amount
- payment.currency = 'PLN'
-getpaid.signals.new_payment_query.connect(new_payment_query_listener)
-
-
-def user_data_query_listener(sender, order, user_data, **kwargs):
- """ Set user data for payment. """
- user_data['email'] = order.email
-getpaid.signals.user_data_query.connect(user_data_query_listener)
-
-def payment_status_changed_listener(sender, instance, old_status, new_status, **kwargs):
- """ React to status changes from getpaid. """
- if old_status != 'paid' and new_status == 'paid':
- instance.order.payed_at = datetime.now()
- instance.order.save()
-getpaid.signals.payment_status_changed.connect(payment_status_changed_listener)
fnp / wolnelektury.git / blobdiff