247 lines
8.9 KiB
Python
247 lines
8.9 KiB
Python
"""News app models."""
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from django.contrib.contenttypes import fields as generic
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from django.db import models
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from django.utils import timezone
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from django.utils.translation import gettext_lazy as _
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from rest_framework.reverse import reverse
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from rating.models import Rating
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from utils.models import BaseAttributes, TJSONField, TranslatedFieldsMixin, ProjectBaseMixin
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from utils.querysets import TranslationQuerysetMixin
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class NewsType(models.Model):
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"""NewsType model."""
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name = models.CharField(_('name'), max_length=250)
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tag_categories = models.ManyToManyField('tag.TagCategory',
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related_name='news_types')
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class Meta:
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"""Meta class."""
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verbose_name_plural = _('news types')
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verbose_name = _('news type')
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def __str__(self):
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"""Overrided __str__ method."""
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return self.name
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class NewsQuerySet(TranslationQuerysetMixin):
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"""QuerySet for model News"""
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def rating_value(self):
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return self.annotate(rating=models.Count('ratings__ip', distinct=True))
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def with_base_related(self):
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"""Return qs with related objects."""
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return self.select_related('news_type', 'country').prefetch_related('tags')
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def with_extended_related(self):
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"""Return qs with related objects."""
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return self.select_related('created_by', 'agenda', 'banner')
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def by_type(self, news_type):
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"""Filter News by type"""
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return self.filter(news_type__name=news_type)
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def by_tags(self, tags):
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return self.filter(tags__in=tags)
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def by_country_code(self, code):
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"""Filter collection by country code."""
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return self.filter(country__code=code)
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def recipe_news(self):
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"""Returns news with tag 'cook' qs."""
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return self.filter(tags__value=News.RECIPES_TAG_VALUE)
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def published(self):
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"""Return only published news"""
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now = timezone.now()
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return self.filter(models.Q(models.Q(end__gte=now) |
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models.Q(end__isnull=True)),
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state__in=self.model.PUBLISHED_STATES, start__lte=now)
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# todo: filter by best score
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# todo: filter by country?
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def should_read(self, news):
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return self.model.objects.exclude(pk=news.pk).published(). \
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with_base_related().by_type(news.news_type).distinct().order_by('?')
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def same_theme(self, news):
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return self.model.objects.exclude(pk=news.pk).published(). \
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with_base_related().by_type(news.news_type). \
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by_tags(news.tags.all()).distinct().order_by('-start')
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class Agenda(ProjectBaseMixin, TranslatedFieldsMixin):
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"""News agenda model"""
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event_datetime = models.DateTimeField(default=timezone.now, editable=False,
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verbose_name=_('Event datetime'))
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address = models.ForeignKey('location.Address', blank=True, null=True,
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default=None, verbose_name=_('address'),
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on_delete=models.SET_NULL)
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content = TJSONField(blank=True, null=True, default=None,
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verbose_name=_('content'),
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help_text='{"en-GB":"some text"}')
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class NewsBanner(ProjectBaseMixin, TranslatedFieldsMixin):
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"""News banner model"""
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title = TJSONField(blank=True, null=True, default=None,
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verbose_name=_('title'),
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help_text='{"en-GB":"some text"}')
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image_url = models.URLField(verbose_name=_('Image URL path'),
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blank=True, null=True, default=None)
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content_url = models.URLField(verbose_name=_('Content URL path'),
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blank=True, null=True, default=None)
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class News(BaseAttributes, TranslatedFieldsMixin):
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"""News model."""
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STR_FIELD_NAME = 'title'
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# TEMPLATE CHOICES
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NEWSPAPER = 0
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MAIN_PDF_ERB = 1
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MAIN = 2
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TEMPLATE_CHOICES = (
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(NEWSPAPER, 'newspaper'),
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(MAIN_PDF_ERB, 'main.pdf.erb'),
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(MAIN, 'main'),
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)
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# STATE CHOICES
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WAITING = 0
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HIDDEN = 1
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PUBLISHED = 2
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PUBLISHED_EXCLUSIVE = 3
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PUBLISHED_STATES = [PUBLISHED, PUBLISHED_EXCLUSIVE]
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STATE_CHOICES = (
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(WAITING, _('Waiting')),
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(HIDDEN, _('Hidden')),
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(PUBLISHED, _('Published')),
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(PUBLISHED_EXCLUSIVE, _('Published exclusive')),
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)
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RECIPES_TAG_VALUE = 'cook'
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old_id = models.PositiveIntegerField(_('old id'), blank=True, null=True, default=None)
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news_type = models.ForeignKey(NewsType, on_delete=models.PROTECT,
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verbose_name=_('news type'))
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title = TJSONField(blank=True, null=True, default=None,
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verbose_name=_('title'),
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help_text='{"en-GB":"some text"}')
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subtitle = TJSONField(blank=True, null=True, default=None,
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verbose_name=_('subtitle'),
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help_text='{"en-GB":"some text"}')
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description = TJSONField(blank=True, null=True, default=None,
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verbose_name=_('description'),
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help_text='{"en-GB":"some text"}')
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start = models.DateTimeField(verbose_name=_('Start'))
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end = models.DateTimeField(blank=True, null=True, default=None,
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verbose_name=_('End'))
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slug = models.SlugField(unique=True, max_length=255,
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verbose_name=_('News slug'))
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state = models.PositiveSmallIntegerField(default=WAITING, choices=STATE_CHOICES,
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verbose_name=_('State'))
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is_highlighted = models.BooleanField(default=False,
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verbose_name=_('Is highlighted'))
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template = models.PositiveIntegerField(choices=TEMPLATE_CHOICES, default=NEWSPAPER)
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address = models.ForeignKey('location.Address', blank=True, null=True,
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default=None, verbose_name=_('address'),
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on_delete=models.SET_NULL)
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country = models.ForeignKey('location.Country', blank=True, null=True,
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on_delete=models.SET_NULL,
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verbose_name=_('country'))
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tags = models.ManyToManyField('tag.Tag', related_name='news',
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verbose_name=_('Tags'))
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gallery = models.ManyToManyField('gallery.Image', through='news.NewsGallery')
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ratings = generic.GenericRelation(Rating)
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favorites = generic.GenericRelation(to='favorites.Favorites')
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agenda = models.ForeignKey('news.Agenda', blank=True, null=True,
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on_delete=models.SET_NULL,
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verbose_name=_('agenda'))
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banner = models.ForeignKey('news.NewsBanner', blank=True, null=True,
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on_delete=models.SET_NULL,
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verbose_name=_('banner'))
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objects = NewsQuerySet.as_manager()
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class Meta:
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"""Meta class."""
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verbose_name = _('news')
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verbose_name_plural = _('news')
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def __str__(self):
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return f'news: {self.slug}'
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@property
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def is_publish(self):
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return self.state in self.PUBLISHED_STATES
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@property
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def web_url(self):
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return reverse('web:news:rud', kwargs={'slug': self.slug})
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@property
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def should_read(self):
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return self.__class__.objects.should_read(self)[:3]
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@property
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def same_theme(self):
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return self.__class__.objects.same_theme(self)[:3]
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@property
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def main_image(self):
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qs = self.news_gallery.main_image()
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if qs.exists():
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return qs.first().image
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@property
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def image_url(self):
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return self.main_image.image.url if self.main_image else None
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@property
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def preview_image_url(self):
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if self.main_image:
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return self.main_image.get_image_url(thumbnail_key='news_preview')
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class NewsGalleryQuerySet(models.QuerySet):
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"""QuerySet for model News"""
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def main_image(self):
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"""Return objects with flag is_main is True"""
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return self.filter(is_main=True)
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class NewsGallery(models.Model):
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news = models.ForeignKey(News, null=True,
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related_name='news_gallery',
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on_delete=models.CASCADE,
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verbose_name=_('news'))
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image = models.ForeignKey('gallery.Image', null=True,
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related_name='news_gallery',
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on_delete=models.CASCADE,
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verbose_name=_('gallery'))
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is_main = models.BooleanField(default=False,
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verbose_name=_('Is the main image'))
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objects = NewsGalleryQuerySet.as_manager()
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class Meta:
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"""NewsGallery meta class."""
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verbose_name = _('news gallery')
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verbose_name_plural = _('news galleries')
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unique_together = (('news', 'is_main'), ('news', 'image'))
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