python - Django 模板中的时区感知日期时间对象

Question

我无法理解如何在 Django 数据库中使用日期时间对象。

我将 datetime.now() 存储在 DateTimeField 中，但无法以可读的方式显示它。目前它显示 UTC 时间。

我应该使用日期时间字段存储时区，还是应该在查询和模板 View 期间始终将其转换为我的时区？

这太复杂了，我一定是完全错了。

如果是这种情况，我将如何在模板中显示太平洋时区时间？

谢谢。

<tbody>
  {% for session in session_list %}
      <tr></tr><td>{{session.date}}</td><td>{{session.email}}</td><td>{{session.userData}}</td></tr>
  {% endfor %}

</tbody>

Answer 1

*) 您可以使用模板标签启用或禁用感知日期时间对象的转换:

{% load tz %}

{% localtime on %}
    {{ value }}
{% endlocaltime %}

{% localtime off %}
    {{ value }}
{% endlocaltime %}

*) 在setting.py中，可以配置TIME_ZONE和USE_TZ

以 UTC 时间存储日期时间很好(下面引用 Django 网站):

it’s still good practice to store data in UTC in your database. The main reason is Daylight Saving Time (DST). Many countries have a system of DST, where clocks are moved forward in spring and backward in autumn. If you’re working in local time, you’re likely to encounter errors twice a year, when the transitions happen. (The pytz documentation discusses these issues in greater detail.) This probably doesn’t matter for your blog, but it’s a problem if you over-bill or under-bill your customers by one hour, twice a year, every year. The solution to this problem is to use UTC in the code and use local time only when interacting with end users.

从 official Django Site 中阅读更多内容