68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
from datetime import datetime
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from math import floor
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from django.core.cache import cache
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.db.models import Sum
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from django.db.models.signals import post_save
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from django.dispatch import receiver
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from django.templatetags.static import static
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from django.urls import reverse
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from django.utils.text import slugify
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from gallery.models.location import Location
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class Album(models.Model):
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name = models.CharField(max_length=150, unique=True, verbose_name="Album")
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slug = models.SlugField(max_length=150, unique=True, verbose_name="Slug")
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location = models.ForeignKey(Location, blank=True, null=True, on_delete=models.SET_NULL, related_name='albums', verbose_name="Location")
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album_date = models.DateField(default=datetime.now, verbose_name="Album Date")
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cover = models.ForeignKey("Photo", blank=True, null=True, on_delete=models.SET_NULL, related_name='cover_to', verbose_name="Album cover")
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is_public = models.BooleanField(default=False, verbose_name="Published")
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def _cache_key(self, suffix):
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return f'album_{self.pk}_{suffix}'
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@property
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def photos_in_album(self):
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key = self._cache_key('photo_count')
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count = cache.get(key)
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if count is None:
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count = self.photos.count()
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cache.set(key, count, 60 * 60 * 24) # Cache 24 h
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return count
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@property
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def photos_views(self):
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key = self._cache_key('photo_views')
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views = cache.get(key)
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if views is None:
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views = self.photos.aggregate(total_views=Sum('views'))['total_views'] or 0
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cache.set(key, views, 60 * 5) # Cache 5 min
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return views
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def save(self, *args, **kwargs):
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if not self.slug:
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self.slug = slugify(self.name)
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super(Album, self).save(*args, **kwargs)
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def get_absolute_url(self):
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return reverse('gallery:album_url', kwargs={'album_slug': self.slug})
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class Meta:
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verbose_name_plural = "Albums"
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ordering = ('album_date',)
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def __str__(self):
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return '{}'.format(self.name)
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@receiver(post_save, sender=Album)
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def delete_album_cover_cache(sender, instance, **kwargs):
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cache.delete(f'photo_md_image_data_{instance.pk}')
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