event-timeline/app/event/views.py

import json

from django.shortcuts import render
from django.conf import settings

from .models import Event
from ..page.models import Page


def events(request, slug=''):
    context = {}
    context['settings'] = settings
    context['events'] = Event.objects.all().order_by('position')
    context['about'], c = Page.objects.get_or_create(slug='about')
    context['imprint'], c = Page.objects.get_or_create(slug='imprint')
    return render(request, 'events.html', context)


def timeline(request):
    context = {}
    context['settings'] = settings
    context['title'], c = Page.objects.get_or_create(slug='title')
    context['about'], c = Page.objects.get_or_create(slug='about')
    context['imprint'], c = Page.objects.get_or_create(slug='imprint')

    timeline = {'events': []}

    for event in Event.objects.all().order_by('position'):
        if not event.date:
            continue
        date = event.date.split(' ')
        start = date[0].split('-')
        if len(date) > 1:
            end = date[1].split('-')
        else:
            end = start
        while len(end) < 3:
            end.append(1)
        while len(start) < 3:
            start.append(1)

        timeline['events'].append({
            "start_date": {
                "year": start[0],
                "month": start[1],
                "day": start[2],
                "hour": "",
                "minute": "",
                "second": "",
                "millisecond": "",
                "format": ""
            },
            "end_date": {
                "year": end[0],
                "month": end[1],
                "day": end[2],
                "hour": "",
                "minute": "",
                "second": "",
                "millisecond": "",
                "format": ""
            },
            "display_date": event.display_date if timeline['events'] else '&nbsp;',
            "text": {
                "headline": event.title,
                "text": event.body
            },
            "group": event.type.lower().strip(),
            "unique_id": event.slug,
        })
        if event.media:
            timeline['events'][-1]['media'] = {
                "url": event.media,
                "caption": event.media_caption,
            }
    context['timeline_json'] = json.dumps(timeline)
    return render(request, 'timeline.html', context)