Django-在"if"语句中检查日期时间 [英] Django - Checking datetime in an 'if' statement

问题描述

我有一个非常有想象力的模型，叫做" model "，其中有一个字段" datefinish "；用户可以在此处以MM/DD/YYYY格式输入日期.在我的模板中，当所述模型的 datefinish (日期)等于当前日期时，我需要显示一些文本.

I have a model very imaginatively called 'model' which has a field 'datefinish' in it; users can input a date here in the format MM/DD/YYYY. In my template I need some text displayed when said model has a datefinish (date) that is equal to the current day.

HTML:

{% if model.datefinish == datetime.today %}
   <h5>It ends today</h5>
{% else %}
   <h5>It does not end today</h5>
{% endif %}

如何做到这一点?我正在使用Django 1.10 ...谢谢！

How might one achieve this? I'm using Django 1.10...thanks!

推荐答案

根据丹尼尔(Daniel)的建议，该模型选项是我的首选，因为当您加载该模型时，它始终可用

The model option as per Daniel's suggestion, which I prefer as then you have it always available whenever you load that model

在以下模式下:

@property
def is_today(self):
  return self.datefinish == datetime.today().date()

这假定'datefinish'是一个DateField，而不是DateTimeField，对于DateTimeField，您可以 self.datefinish.date()== ...

this assumes that the 'datefinish' is a DateField, not a DateTimeField, for DateTimeField you would do self.datefinish.date() == ...

您还可以查看其是否在某个范围内，即

you can also see if its within a range, i.e.

return self.start_date <= datetime.today().date() <= self.end_date

如果模型中有两个日期.

if you have two dates in a model.

或创建一个模板标签，例如:

or create a template tag like:

@register.filter
def is_today(dt):
  if isinstance(dt, datetime):
    return dt.date() == datetime.today().date():
  if isinstance(dt, date):
    return dt == datetime.today().date():

然后您可以在模板中完成

then in the template you can do

{% if model.datetime_field|is_today %}

过滤器可以处理DateField和DateTimeField

The filter can handle DateField and DateTimeField

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