324 lines
10 KiB
Python
324 lines
10 KiB
Python
"""Models to solitary events, events series with an location and photos."""
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import os
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from ckeditor.fields import RichTextField
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from django.conf import settings
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from django.core.exceptions import ValidationError
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from django.urls import reverse
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from django.db import models
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from django.db.models import Q
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from django.template.defaultfilters import slugify
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from django.utils.timezone import now
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from django.utils.translation import ugettext as _
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from easy_thumbnails.fields import ThumbnailerImageField
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from utils import COUNTRIES, OverwriteStorage
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from .managers import EventManager
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def get_upload_path(instance, filename):
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"""
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Generates the desired file path and filename for an uploaded Image.
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With this function Django can save the uploaded images to subfolders that
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also have a meaning for humans.
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@param instance: an Django Object for which the Image has been uploaded.
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@type instance: a instace of an models.Model sub-class.
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@param filename: The filename of the uploaded image.
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@type filename: String
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"""
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filename, extension = os.path.splitext(filename.lower())
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if isinstance(instance, Event):
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return "events/{date:%Y-%m-%d}/{name}{ext}".format(
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date=instance.start,
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name=slugify(instance.name),
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ext=extension
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)
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elif isinstance(instance, Location):
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return "events/locations/{name}{ext}".format(
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name=slugify(instance.name),
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ext=extension
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)
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elif isinstance(instance, Photo):
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return "events/{date:%Y-%m-%d}/{name}{ext}".format(
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date=instance.event.start,
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name=filename,
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ext=extension
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)
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class Event(models.Model):
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"""An Event that could be a tournament, a game session, or an convention."""
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name = models.CharField(_('Name'), max_length=255)
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description = RichTextField(_("Description"), blank=True)
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location = models.ForeignKey('Location')
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start = models.DateTimeField(_('Start'))
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end = models.DateTimeField(_('End'), blank=True, null=True)
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url = models.URLField(_('Homepage'), blank=True)
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image = ThumbnailerImageField(
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_("Image"),
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upload_to=get_upload_path,
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storage=OverwriteStorage(),
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blank=True,
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null=True
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)
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mahjong_tournament = models.BooleanField(
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_('Mahjong Tournament'),
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default=False,
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help_text=_(u'This event is a tournament, different rules apply for \
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the kyu ranking.')
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)
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mahjong_season = models.PositiveSmallIntegerField(
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_('Mahjong Season'),
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blank=True,
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null=True
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)
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photo_count = models.PositiveIntegerField(default=0, editable=False)
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event_series = models.ForeignKey(
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'Event',
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blank=True,
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null=True,
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on_delete=models.SET_NULL, editable=True,
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verbose_name=_('Event Series'),
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help_text=_(u'Wenn dieser Event zu einer Veranstaltungsreihe gehört \
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werden Ort, Beschreibung, Bild und Homepage von dem hier angegebenen \
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Event übernommen.')
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)
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date_created = models.DateTimeField(
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auto_now_add=True,
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null=True,
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db_index=True,
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editable=False,
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verbose_name=_('first created at'),
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)
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date_modified = models.DateTimeField(
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auto_now=True,
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editable=False,
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verbose_name=_('latest updated at'),
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)
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objects = EventManager()
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class Meta(object):
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"""order the events by start date."""
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verbose_name = _('Event')
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verbose_name_plural = _('Events')
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ordering = ('start', 'end',)
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def __str__(self):
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try:
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return "%(name)s (%(date)s)" % {'name': self.name,
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'date': self.start.date()}
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except:
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return "New Event Model"
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def clean(self):
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if self.end and self.end < self.start:
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raise ValidationError({
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'end': _("A event can't end before it had started")
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})
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def get_absolute_url(self):
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kwargs = {
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'pk': self.id,
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'year': self.start.strftime('%Y'),
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'month': self.start.strftime('%m')
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}
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return reverse('event-detail', kwargs=kwargs)
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def get_eventseries_form_url(self):
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kwargs = {
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'pk': self.id,
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'year': self.start.strftime('%Y'),
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'month': self.start.strftime('%m')
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}
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return reverse('eventseries-form', kwargs=kwargs)
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def get_edit_url(self):
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kwargs = {
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'pk': self.id,
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'year': self.start.strftime('%Y'),
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'month': self.start.strftime('%m')
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}
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return reverse('event-form', kwargs=kwargs)
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def get_image(self):
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if self.image:
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return self.image
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elif self.photo_count:
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return self.photo_set.all().order_by('?')[0].image
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elif self.location.image:
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return self.location.image
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else:
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return None
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@property
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def is_future_event(self):
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return self.start > now()
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def save(self, **kwargs):
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# Fülle fehlende Felder mit den Angaben der Hauptveranstaltung aus.
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if self.event_series:
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master_event = self.event_series
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self.name = self.name or master_event.name
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self.description = self.description or master_event.description
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self.location = master_event.location
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self.url = master_event.url
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self.image = self.image or master_event.image
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self.photo_count = self.photo_set.count()
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super(Event, self).save(**kwargs)
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# Update the Hanchans if necesery:
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for hanchan in self.hanchan_set.all():
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hanchan.save()
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class Location(models.Model):
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name = models.CharField(_("Name"), max_length=200)
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description = RichTextField(_("Description"), blank=True)
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image = ThumbnailerImageField(
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_("Image"),
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upload_to=get_upload_path,
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storage=OverwriteStorage(),
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blank=True,
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null=True
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)
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url = models.URLField(_('Homepage'), blank=True)
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postal_code = models.CharField(_('Postal Code'), max_length=6)
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street_address = models.CharField(_('Street Address'), max_length=127)
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locality = models.CharField(_('Locality'), max_length=127)
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country = models.CharField(_('Country'), max_length=2, choices=COUNTRIES)
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date_created = models.DateTimeField(
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auto_now_add=True,
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db_index=True,
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editable=False,
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null=True,
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verbose_name=_('first created at'),
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)
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date_modified = models.DateTimeField(
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auto_now=True,
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editable=False,
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verbose_name=_('latest updated at'),
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)
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class Meta(object):
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verbose_name = _('Venue')
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verbose_name_plural = _('Venues')
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def __str__(self):
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return self.name
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@property
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def address(self):
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address = (self.street_address, self.locality, self.country,)
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return ','.join(address)
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class Photo(models.Model):
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name = models.CharField(_("Name"), max_length=100, blank=True)
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image = ThumbnailerImageField(
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_("Image"),
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upload_to=get_upload_path,
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storage=OverwriteStorage()
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)
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event = models.ForeignKey('events.Event')
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description = models.TextField(
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_("Description"),
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max_length=300,
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blank=True
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)
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photographer = models.ForeignKey(settings.AUTH_USER_MODEL)
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on_startpage = models.BooleanField(
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_("Startpage"),
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default=False,
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db_index=True,
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help_text=_('Display this Photo on the Startpage Teaser')
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)
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created_date = models.DateTimeField(_("Published on"))
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views = models.PositiveIntegerField(
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_("Number of views"),
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editable=False,
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default=0
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)
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date_created = models.DateTimeField(
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auto_now_add=True,
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db_index=True,
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editable=False,
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null=True,
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verbose_name=_('first created at'),
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)
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date_modified = models.DateTimeField(
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auto_now=True,
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editable=False,
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verbose_name=_('latest updated at'),
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)
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metadata = None
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orientation = 1
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class Meta:
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get_latest_by = "created_date"
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ordering = ["created_date"]
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db_table = 'events_photo'
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verbose_name = _('Event Image')
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verbose_name_plural = _('Event Images')
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def __str__(self):
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return os.path.basename(self.image.name)
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def rotate(self, rotate):
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# TODO: Eine vernüftigte Methode ohne viele Abhängigkeiten finden um
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# die Bilder bei Bedarf zu drehen.
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if rotate == 'clockwise':
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pass
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elif rotate == 'counter-clockwise':
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pass
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self.save()
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def save(self, **kwargs):
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super(Photo, self).save(**kwargs)
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self.event.save()
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def get_absolute_url(self):
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return reverse(
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'event-photo',
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kwargs={'event': self.event.id, 'pk': self.id}
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)
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@property
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def next_photo(self):
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queryset = Photo.objects.filter(created_date__gt=self.created_date)
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queryset = queryset.order_by('created_date')
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try:
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if self.event.event_series:
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return queryset.filter(
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Q(event=self.event) |
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Q(event=self.event.event_series) |
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Q(event__event_series=self.event.event_series)
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)[0]
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else:
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return queryset.filter(
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Q(event=self.event) |
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Q(event__event_series=self.event)
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)[0]
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except IndexError:
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return None
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@property
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def previous_photo(self):
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queryset = Photo.objects.filter(created_date__lt=self.created_date)
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queryset = queryset.order_by('-created_date')
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try:
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if self.event.event_series:
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return queryset.filter(
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Q(event=self.event) |
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Q(event=self.event.event_series) |
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Q(event__event_series=self.event.event_series)
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)[0]
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else:
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return queryset.filter(
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Q(event=self.event) |
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Q(event__event_series=self.event)
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)[0]
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except IndexError:
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return None
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