Django接受AM/PM作为表单输入 [英] Django Accepting AM/PM As Form Input

问题描述

我试图弄清楚如何使用DateTime字段在Django中接受am/pm作为时间格式，但是遇到了一些麻烦.我试图在我的forms.py文件中设置像这样

I am trying to figure out how to accept am/pm as a time format in Django using a DateTime field, but I am having some trouble. I have tried setting it like this in my forms.py file

pickup_date_time_from = DateTimeField(input_formats=["%m/%d/%Y %I:%M %p"])

具有以下数据:

12/31/2017 02:40 pm

但是，提交表单时出现验证错误:

However, I get a validation error when submitting the form:

(Hidden field pickup_date_time_from) Enter a valid date/time.

我还尝试按照文档说明在settings.py中设置全局变量:

I have also tried setting a global variable in settings.py as the documentation states:

DATETIME_INPUT_FORMATS = ['%m/%d/%y %I:%M %p']

什么是有效的，如果我在没有am/pm的情况下提交数据，但输出为

What does work is if I submit the data without the am/pm, but the output is

2017-12-31 02:40:00+00:00

还有其他选择吗?

推荐答案

DATETIME_INPUT_FORMATS不适用于包含％p 的格式. input_formats kwarg都不会.

DATETIME_INPUT_FORMATS doesn't work for formats containg %p. Neither do input_formats kwarg.

作为快速解决方法，您可以在 Form 的 __ init __ DateTimeField 的 input_formats 属性>方法.例如:

As a quick work around, you can alter the input_formats attribute of DateTimeField in the Form's __init__ method. For example:

class DateTimeForm(forms.Form):
    CUSTOM_FORMAT = '%m/%d/%y %I:%M %p'

    date_input = forms.DateTimeField(widget=forms.HiddenInput)

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        if self.CUSTOM_FORMAT not in self.fields['date_input'].input_formats:
            self.fields['date_input'].input_formats.append(self.CUSTOM_FORMAT)

Django文档是说％p不能用于解析日期字段.

Django documentation does say that %p cannot be used in parsing date fields.

但是，如果您浏览源代码，DateTimeField的to_python方法并没有真正执行类似的操作.

But if you go through the source code, the to_python method of DateTimeField doesn't really enforce anything like that.

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