224 lines
7.9 KiB
Python
224 lines
7.9 KiB
Python
import datetime
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from django.core.exceptions import ValidationError
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from django.core.urlresolvers import reverse
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from django.db import models
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from django.db.models.signals import post_init, post_save
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from django.utils.translation import ugettext_lazy as _
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from django.contrib.auth.models import User
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from symposion.conference.models import Conference
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from symposion.sponsorship.managers import SponsorManager
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class SponsorLevel(models.Model):
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conference = models.ForeignKey(Conference, verbose_name=_("conference"))
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name = models.CharField(_("name"), max_length=100)
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order = models.IntegerField(_("order"), default=0)
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cost = models.PositiveIntegerField(_("cost"))
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description = models.TextField(_("description"), blank=True, help_text=_("This is private."))
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class Meta:
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ordering = ["conference", "order"]
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verbose_name = _("sponsor level")
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verbose_name_plural = _("sponsor levels")
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def __unicode__(self):
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return self.name
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def sponsors(self):
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return self.sponsor_set.filter(active=True).order_by("added")
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class Sponsor(models.Model):
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applicant = models.ForeignKey(User, related_name="sponsorships", verbose_name=_("applicant"),
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null=True)
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name = models.CharField(_("Sponsor Name"), max_length=100)
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display_url = models.URLField(_("display URL"), blank=True)
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external_url = models.URLField(_("external URL"))
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annotation = models.TextField(_("annotation"), blank=True)
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contact_name = models.CharField(_("Contact Name"), max_length=100)
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contact_email = models.EmailField(_(u"Contact Email"))
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level = models.ForeignKey(SponsorLevel, verbose_name=_("level"))
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added = models.DateTimeField(_("added"), default=datetime.datetime.now)
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active = models.BooleanField(_("active"), default=False)
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# Denormalization (this assumes only one logo)
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sponsor_logo = models.ForeignKey("SponsorBenefit", related_name="+", null=True, blank=True,
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editable=False)
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objects = SponsorManager()
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def __unicode__(self):
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return self.name
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class Meta:
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verbose_name = _("sponsor")
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verbose_name_plural = _("sponsors")
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def get_absolute_url(self):
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if self.active:
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return reverse("sponsor_detail", kwargs={"pk": self.pk})
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return reverse("sponsor_list")
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def get_display_url(self):
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if self.display_url:
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return self.display_url
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else:
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return self.external_url
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@property
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def website_logo(self):
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if self.sponsor_logo is None:
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benefits = self.sponsor_benefits.filter(
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benefit__type="weblogo", upload__isnull=False)[:1]
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if benefits.count():
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if benefits[0].upload:
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self.sponsor_logo = benefits[0]
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self.save()
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return self.sponsor_logo.upload
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@property
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def listing_text(self):
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if not hasattr(self, "_listing_text"):
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self._listing_text = None
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# @@@ better than hard-coding a pk but still not good
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benefits = self.sponsor_benefits.filter(benefit__name="Sponsor Description")
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if benefits.count():
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self._listing_text = benefits[0].text
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return self._listing_text
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def reset_benefits(self):
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"""
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Reset all benefits for this sponsor to the defaults for their
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sponsorship level.
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"""
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level = None
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try:
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level = self.level
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except SponsorLevel.DoesNotExist:
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pass
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allowed_benefits = []
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if level:
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for benefit_level in level.benefit_levels.all():
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# Create all needed benefits if they don't exist already
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sponsor_benefit, created = SponsorBenefit.objects.get_or_create(
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sponsor=self, benefit=benefit_level.benefit)
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# and set to default limits for this level.
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sponsor_benefit.max_words = benefit_level.max_words
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sponsor_benefit.other_limits = benefit_level.other_limits
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# and set to active
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sponsor_benefit.active = True
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# @@@ We don't call sponsor_benefit.clean here. This means
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# that if the sponsorship level for a sponsor is adjusted
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# downwards, an existing too-long text entry can remain,
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# and won't raise a validation error until it's next
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# edited.
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sponsor_benefit.save()
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allowed_benefits.append(sponsor_benefit.pk)
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# Any remaining sponsor benefits that don't normally belong to
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# this level are set to inactive
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self.sponsor_benefits.exclude(pk__in=allowed_benefits)\
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.update(active=False, max_words=None, other_limits="")
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def send_coordinator_emails(self):
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pass # @@@ should this just be done centrally?
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def _store_initial_level(sender, instance, **kwargs):
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if instance:
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instance._initial_level_id = instance.level_id
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post_init.connect(_store_initial_level, sender=Sponsor)
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def _check_level_change(sender, instance, created, **kwargs):
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if instance and (created or instance.level_id != instance._initial_level_id):
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instance.reset_benefits()
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post_save.connect(_check_level_change, sender=Sponsor)
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BENEFIT_TYPE_CHOICES = [
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("text", "Text"),
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("file", "File"),
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("weblogo", "Web Logo"),
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("simple", "Simple")
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]
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class Benefit(models.Model):
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name = models.CharField(_("name"), max_length=100)
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description = models.TextField(_("description"), blank=True)
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type = models.CharField(_("type"), choices=BENEFIT_TYPE_CHOICES, max_length=10,
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default="simple")
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def __unicode__(self):
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return self.name
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class BenefitLevel(models.Model):
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benefit = models.ForeignKey(Benefit, related_name="benefit_levels", verbose_name=_("benefit"))
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level = models.ForeignKey(SponsorLevel, related_name="benefit_levels", verbose_name=_("level"))
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# default limits for this benefit at given level
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max_words = models.PositiveIntegerField(_("max words"), blank=True, null=True)
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other_limits = models.CharField(_("other limits"), max_length=200, blank=True)
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class Meta:
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ordering = ["level"]
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def __unicode__(self):
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return u"%s - %s" % (self.level, self.benefit)
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class SponsorBenefit(models.Model):
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sponsor = models.ForeignKey(Sponsor, related_name="sponsor_benefits", verbose_name=_("sponsor"))
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benefit = models.ForeignKey(Benefit, related_name="sponsor_benefits", verbose_name=_("benefit"))
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active = models.BooleanField(default=True)
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# Limits: will initially be set to defaults from corresponding BenefitLevel
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max_words = models.PositiveIntegerField(_("max words"), blank=True, null=True)
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other_limits = models.CharField(_("other limits"), max_length=200, blank=True)
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# Data: zero or one of these fields will be used, depending on the
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# type of the Benefit (text, file, or simple)
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text = models.TextField(_("text"), blank=True)
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upload = models.FileField(_("file"), blank=True, upload_to="sponsor_files")
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class Meta:
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ordering = ["-active"]
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def __unicode__(self):
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return u"%s - %s" % (self.sponsor, self.benefit)
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def clean(self):
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num_words = len(self.text.split())
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if self.max_words and num_words > self.max_words:
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raise ValidationError(
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"Sponsorship level only allows for %s words, you provided %d." % (
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self.max_words, num_words))
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def data_fields(self):
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"""
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Return list of data field names which should be editable for
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this ``SponsorBenefit``, depending on its ``Benefit`` type.
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"""
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if self.benefit.type == "file" or self.benefit.type == "weblogo":
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return ["upload"]
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elif self.benefit.type == "text":
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return ["text"]
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return []
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