django写一个日历，包含日历图形模板和views代码

日历图形模板 calendar.html：

{% extends "base.html" %}

{% block content %}
  <h2>{{ month_name }} {{ year }}</h2>
  <table>
    <thead>
      <tr>
        <th>周日</th>
        <th>周一</th>
        <th>周二</th>
        <th>周三</th>
        <th>周四</th>
        <th>周五</th>
        <th>周六</th>
      </tr>
    </thead>
    <tbody>
      {% for week in weeks %}
        <tr>
          {% for day in week %}
            {% if day %}
              <td>
                <a href="{% url 'event_detail' day.year day.month day.day %}">
                  {{ day.day }}
                  {% for event in day.events %}
                    <br>{{ event.title }}
                  {% endfor %}
                </a>
              </td>
            {% else %}
              <td></td>
            {% endif %}
          {% endfor %}
        </tr>
      {% endfor %}
    </tbody>
  </table>
{% endblock %}

views.py代码：

from django.shortcuts import render, get_object_or_404, redirect
from django.utils.safestring import mark_safe
from django.urls import reverse
from datetime import datetime, timedelta
from calendar import HTMLCalendar
from .models import Event

class Calendar(HTMLCalendar):
    def __init__(self, events):
        super(Calendar, self).__init__()
        self.events = events

    def formatday(self, day, weekday):
        if day != 0:
            cssclass = self.cssclasses[weekday]
            if datetime.now().date() == datetime(self.year, self.month, day).date():
                cssclass += ' today'
            if datetime.now().date() > datetime(self.year, self.month, day).date():
                cssclass += ' past'
            if datetime.now().date() < datetime(self.year, self.month, day).date():
                cssclass += ' future'
            events_per_day = self.events.filter(start_time__day=day)
            d = ''
            for event in events_per_day:
                d += f'<li> {event.get_html_url} </li>'
            if d != '':
                return f"<td class='{cssclass}'><span class='date'>{day}</span><ul> {d} </ul></td>"
            return f"<td class='{cssclass}'><span class='date'>{day}</span></td>"
        return '<td></td>'

    def formatweek(self, theweek):
        week = ''
        for d, weekday in theweek:
            week += self.formatday(d, weekday)
        return f'<tr> {week} </tr>'

    def formatmonth(self, year, month):
        self.year, self.month = year, month
        events = Event.objects.filter(start_time__year=year, start_time__month=month)
        cal = f'<table border="0" cellpadding="0" cellspacing="0" class="calendar">\n'
        cal += f'{self.formatmonthname(year, month, withyear=True)}\n'
        cal += f'{self.formatweekheader()}\n'
        for week in self.monthdays2calendar(year, month):
            cal += f'{self.formatweek(week)}\n'
        cal += f'</table>'
        return mark_safe(cal)

def calendar_view(request, year, month):
    events = Event.objects.filter(start_time__year=year, start_time__month=month)
    cal = Calendar(events).formatmonth(int(year), int(month))
    return render(request, 'calendar.html', {'calendar': cal, 'month_name': datetime.strptime(str(month), '%m').strftime('%B'), 'year': year, 'weeks': events})

def event_detail(request, year, month, day):
    event = get_object_or_404(Event, start_time__year=year, start_time__month=month, start_time__day=day)
    context = {'event': event}
    return render(request, 'event_detail.html', context)