CODEWITHSUNDEEP
pythondjango
Jonas Grumann
Jonas Grumann

Reputation: 10786

Grouping events by year and by month

In my Website I have a timeline view where the user can see all the organized events (upcoming and past), for this I created an Event Model that has a DateTimeField and now I'm trying to group the results to render them in the template. The desired output is:

- 2014
-- January
---- event1
---- event2
-- February
---- event1
---- event2
....
- 2015
-- January
....

My attempt at grouping by year:

        events = {}

        last_year = None
        current_year_events = []

        for event in ProofEvent.objects.all().order_by("date"):
            year = event.date.year

            if year != last_year:
                current_year_events.append(event)
                events[year] = current_year_events
                last_year = year
                current_year_events = []
                print event.title
            else:
                current_year_events.append(event)
                print event.title

        print events

Upvotes: 1

Views: 85

Answers (1)

catavaran
catavaran

Reputation: 45575

If you trying to group events only for template rendering then it is unnecessary. You can pass a flat list of events and use {% ifchanged %} template tag:

{% for event in events %}

    {% ifchanged %}<h2>{{ event.date|date:"Y" }}</h2>{% endifchanged %}

    {% ifchanged %}<h3>{{ event.date|date:"F" }}</h3>{% endifchanged %}

    <div>{{ event.title }}</div>

{% endfor %}

Upvotes: 3

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