170 lines
5.0 KiB
Python
170 lines
5.0 KiB
Python
from enum import IntEnum
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import re
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from django.db import models
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from django.urls import reverse
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from django.utils import timezone as tz
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from django.utils.text import slugify
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from django.utils.html import format_html
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from django.utils.translation import ugettext_lazy as _
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from django.utils.functional import cached_property
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from ckeditor.fields import RichTextField
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from filer.fields.image import FilerImageField
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from model_utils.managers import InheritanceQuerySet
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from .station import Station
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__all__ = ['Category', 'PageQuerySet', 'Page', 'NavItem']
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headline_re = re.compile(r'(<p>)?'
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r'(?P<headline>[^\n]{1,140}(\n|[^\.]*?\.))'
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r'(</p>)?')
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class Category(models.Model):
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title = models.CharField(_('title'), max_length=64)
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slug = models.SlugField(_('slug'), max_length=64, db_index=True)
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class Meta:
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verbose_name = _('Category')
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verbose_name_plural = _('Categories')
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def __str__(self):
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return self.title
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class PageQuerySet(InheritanceQuerySet):
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def draft(self):
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return self.filter(status=Page.STATUS.draft)
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def published(self):
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return self.filter(status=Page.STATUS.published)
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def trash(self):
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return self.filter(status=Page.STATUS.trash)
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class Page(models.Model):
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""" Base class for publishable content """
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class STATUS(IntEnum):
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draft = 0x00
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published = 0x10
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trash = 0x20
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title = models.CharField(max_length=128)
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slug = models.SlugField(_('slug'), blank=True, unique=True)
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status = models.PositiveSmallIntegerField(
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_('status'),
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default=STATUS.draft,
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choices=[(int(y), _(x)) for x, y in STATUS.__members__.items()],
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)
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category = models.ForeignKey(
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Category, models.SET_NULL,
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verbose_name=_('category'), blank=True, null=True, db_index=True
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)
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cover = FilerImageField(
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on_delete=models.SET_NULL,
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verbose_name=_('Cover'), null=True, blank=True,
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)
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content = RichTextField(
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_('content'), blank=True, null=True,
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)
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date = models.DateTimeField(default=tz.now)
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featured = models.BooleanField(
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_('featured'), default=False,
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)
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allow_comments = models.BooleanField(
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_('allow comments'), default=True,
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)
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objects = PageQuerySet.as_manager()
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detail_url_name = None
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class Meta:
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abstract = True
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def __str__(self):
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return '{}: {}'.format(self._meta.verbose_name,
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self.title or self.pk)
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def save(self, *args, **kwargs):
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# TODO: ensure unique slug
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if not self.slug:
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self.slug = slugify(self.title)
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print(self.title, '--', self.slug)
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super().save(*args, **kwargs)
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def get_absolute_url(self):
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return reverse(self.detail_url_name, kwargs={'slug': self.slug}) \
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if self.is_published else '#'
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@property
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def is_draft(self):
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return self.status == self.STATUS.draft
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@property
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def is_published(self):
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return self.status == self.STATUS.published
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@property
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def is_trash(self):
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return self.status == self.STATUS.trash
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@cached_property
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def headline(self):
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if not self.content:
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return ''
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headline = headline_re.search(self.content)
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return headline.groupdict()['headline'] if headline else ''
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@classmethod
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def get_init_kwargs_from(cls, page, **kwargs):
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kwargs.setdefault('cover', page.cover)
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kwargs.setdefault('category', page.category)
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return kwargs
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@classmethod
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def from_page(cls, page, **kwargs):
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return cls(**cls.get_init_kwargs_from(page, **kwargs))
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class NavItem(models.Model):
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""" Navigation menu items """
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station = models.ForeignKey(
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Station, models.CASCADE, verbose_name=_('station'))
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menu = models.SlugField(_('menu'), max_length=24)
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order = models.PositiveSmallIntegerField(_('order'))
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text = models.CharField(_('title'), max_length=64)
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url = models.CharField(_('url'), max_length=256, blank=True, null=True)
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#target_type = models.ForeignKey(
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# ContentType, models.CASCADE, blank=True, null=True)
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#target_id = models.PositiveSmallIntegerField(blank=True, null=True)
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#target = GenericForeignKey('target_type', 'target_id')
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class Meta:
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verbose_name = _('Menu item')
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ordering = ('order', 'pk')
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is_active = False
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def get_is_active(self, url):
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""" Return True if navigation item is active for this url. """
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return self.url and url.startswith(self.url)
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def render(self, request, css_class='', active_class=''):
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if active_class and request.path.startswith(self.url):
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css_class += ' ' + active_class
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if not self.url:
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return self.text
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elif not css_class:
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return format_html('<a href="{}">{}</a>', self.url, self.text)
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else:
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return format_html('<a href="{}" class="{}">{}</a>', self.url,
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css_class, self.text)
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