Question

我创建了一个运行平稳的表单，但是当我添加DateTimeField时，该表单将不再有效。我收到输入错误的日期/时间的错误；但是，我尝试了每种日期输入格式，但仍然没有用。我觉得问题可能出在我的DateTimeField的表单字段中，但不确定确切的问题是什么。我将不胜感激。

class Lesson(models.Model):
    user = models.ForeignKey(User, null=True, default=None, related_name='lessons', on_delete=models.CASCADE)
    lesson_instrument = models.CharField(max_length=255, choices=instrument_list, blank=True)
    lesson_level = models.CharField(max_length=255, choices=level_list, blank=True)
    lesson_length = models.CharField(max_length=255, choices=length_list, blank=True)
    lesson_datetime = models.DateTimeField(null=True, blank=True)
    lesson_weekly = models.BooleanField(default=False, blank=True)

    def __str__(self):
        return self.lessons

    @receiver(post_save, sender=User)
    def create_user_lessons(sender, instance, created, **kwargs):
        if created:
            Lesson.objects.create(user=instance)

    @receiver(post_save, sender=User)
    def save_user_lessons(sender, instance, **kwargs):
        for lesson in instance.lessons.all():
            lesson.save()

forms.py

class LessonForm(forms.ModelForm):
    lesson_instrument = forms.ChoiceField(choices=instrument_list, widget=forms.Select(attrs={'class' : 'form-control', 'required' : 'True'}))
    lesson_level = forms.ChoiceField(choices=level_list, widget=forms.Select(attrs={'class' : 'form-control', 'required' : 'True'}))
    lesson_length = forms.ChoiceField(choices=length_list, widget=forms.Select(attrs={'class' : 'form-control', 'required' : 'True'}))
    lesson_datetime = forms.DateTimeField(widget=forms.DateTimeInput(attrs={'class': 'form-control', 'type':'datetime-local'}))
    lesson_weekly = forms.BooleanField(required=False)

    class Meta:
        model = Lesson
        fields = ('lesson_instrument', 'lesson_level', 'lesson_length', 'lesson_datetime', 'lesson_weekly')

views.py

def new_lesson(request):
    if request.method == 'POST':
        form = LessonForm(request.POST)

        if form.is_valid():
            lessons = form.save(commit=False)
            lessons.user = request.user
            lessons.save()
            messages.success(request,'Lesson successfully created')
            return redirect('/teacher/schedule')

        else:
            messages.error(request, 'Information entered was invalid')

    else:
        form = LessonForm()

    form = LessonForm()
    lessons = Lesson.objects.filter(user=request.user)
    context = {'form' : form, 'lessons': lessons}
    return render(request, 'teacher/new_lesson.html', context)

Answer 1

在设置文件中选中DATETIME_INPUT_FORMATS。如果未指定，则默认为here所示的值。

然后，将format=参数添加到DateTimeInput小部件（请参阅Django docs）以获取有关如何执行此操作的更多信息），并确保其与一种格式对齐DATETIME_INPUT_FORMATS设置支持。

DateTimeField一直说无效的日期/时间

1 个答案: