event-timeline/app/event/models.py

from datetime import datetime
from django.db import models
from django.conf import settings

import ox

class Event(models.Model):

    class Meta:
        ordering = ('position', 'date')

    created = models.DateTimeField(auto_now_add=True)
    modified = models.DateTimeField(auto_now=True)

    slug = models.SlugField(blank=True, unique=True)

    position = models.IntegerField(default=0)
    title = models.TextField(blank=True)
    type = models.CharField(blank=True, default='', max_length=1024)
    date = models.CharField(blank=True, null=True, max_length=1024)
    body = models.TextField(blank=True, null=True)
    media = models.TextField(blank=True, null=True)
    media_caption = models.TextField(blank=True, null=True, default='')

    data = models.JSONField(default=dict, blank=True, editable=False)

    def __str__(self):
        return '%s (%s)' % (ox.strip_tags(self.title), self.slug)

    def get_absolute_url(self):
        return '/' + settings.URL_PREFIX + '#' + self.slug

    @property
    def display_date(self):
        if self.date:
            date = self.date.split(' ')
            start = date[0].split('-')
            if len(date) > 1:
                end = date[1].split('-')
            else:
                end = start
            end_only_month = False
            start_only_month = False
            while len(end) < 3:
                end.append(1)
                end_only_month = True
            while len(start) < 3:
                start.append(1)
                start_only_month = True
            start = [int(p) for p in start]
            end = [int(p) for p in end]

            display_date = datetime(*start).strftime('%e %B, %Y')
            if start_only_month:
                display_date = ' '.join(display_date.split(' ')[1:])
            if end != start:
                end_date = datetime(*end).strftime('%e %B, %Y')
                if end_only_month:
                    end_date = ' '.join(end_date.split(' ')[1:])
                display_date += ' — ' + end_date
        else:
            display_date = ''
        return display_date

    def media_html(self):
        html = ''
        if self.media and self.media.split('.')[-1] in ('jpg', 'png', 'gif'):
            html += '<img src="%s">' % self.media
        elif '<' in self.media:
            html = self.media
        else:
            url = self.media
            if 'youtube.com/watch' in url:
                url = url.replace('/watch?v=', '/embed/')
            elif 'twitter.com/' in url:
                url = url.replace('twitter.com', 'nitter.net')
            html += '<iframe src="%s" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>' % url
        if self.media_caption:
            html = '<figure>%s<figcaption>%s</figcaption></figure>' % (html, self.media_caption)
        return html