Django Datetime Choice 字段问题

Question

所以，我对 Django 很陌生，我正在尝试将以下想法付诸实践：在我的对象创建表单中，我希望用户填写日期字段以便在对象上放置各种时间戳。问题是我只想让两天可供选择——今天和明天。我不想使用 DateTime 字段并让用户手动输入日期，因为它看起来很丑而且使用起来不太方便。我决定尝试实现一个选择字段。它呈现得很好，但到目前为止我还没有弄清楚如何使我的表单数据通过有效。我仔细研究了 pdb，结果阅读了 cleaning/validating 方法，但我仍然不知道如何让它工作。我已经尝试过的：添加函数 return 今天和明天作为日期对象和字符串（这里是后者）错误文本是： select 一个有效的选择，不是可用的选择之一我认为它在 clean() 方法期间以某种方式失败。或者，如果这不是一个合理的想法（它可能不是），那么可能有什么替代方案？

models.py:

def get_today():
    return datetime.date.strftime( datetime.datetime.now().date(), format="%Y-%m-%d")

def get_tomorrow():
    return datetime.date.strftime(((datetime.datetime.now() + datetime.timedelta(days=1)).date()), format="%Y-%m-%d") 

class User(AbstractUser):

    slug = models.SlugField(max_length=100, unique=True)

    def save(self, *args, **kwargs):
        self.slug = slugify(self.username)
        super(User, self).save(*args, **kwargs)


class Task(models.Model):
    TODAY = get_today
    TOMORROW = get_tomorrow
    DATE_SELECTION = (
            (TODAY, "Today"),
            (TOMORROW, "Tomorrow"),
        )
    task_title = models.CharField(verbose_name="Название задачи: ", max_length=150)
    task_description = models.TextField(verbose_name="Описание: ", max_length=1000)
    task_user = models.ForeignKey('User', on_delete=models.CASCADE)
    task_date = models.DateField(choices=DATE_SELECTION)

    def __str__(self):
        return self.task_title

我用来处理表单的 views.py 基于 class 的视图：

class CreateTask(CreateView):
    model = Task
    form_class = TaskForm
    success_url = '/{user}'

    def get(self, request, *args, **kwargs):
        form = TaskForm()
        return render(request, 'create_task.html', {'form': form})

    def post(self, request, *args, **kwargs):
        form = TaskForm(request.POST)
        if form.is_valid():
            task = form.save(commit=False)
            task = Task(**form.cleaned_data)
            task.task_user = request.user
            task.save()
            messages.add_message(request, messages.INFO, "Task %s was successfully created!" % task.task_title)
            return redirect('tasks:user_home', user=request.user)
        else:
            return render(request, 'create_task.html', {'form': form, 'errors':form.errors})

forms.py

class TaskForm(forms.ModelForm):    
    task_date=forms.DateField(input_formats="%Y-%m-%d")
    class Meta:
        model = Task
        fields = ['task_title', 'task_description']

更新： 经过大量实验和研究，我创建了以下解决方案：

models.py

class Task(models.Model):
    task_title = models.CharField(verbose_name="Название задачи: ", max_length=150)
    task_description = models.TextField(verbose_name="Описание: ", max_length=1000)
    task_user = models.ForeignKey('User', on_delete=models.CASCADE)
    task_date = models.DateField()

    def __str__(self):
        return self.task_title

(^^^注意缺少select离子场) 和 forms.py:

def get_today():
    return datetime.datetime.now().date()

def get_tomorrow():
    return (datetime.datetime.now() + datetime.timedelta(days=1)).date() 

TODAY = get_today
TOMORROW = get_tomorrow
DATE_SELECTION = (
        (TODAY, "Today"),
        (TOMORROW, "Tomorrow"),
    )

class TaskForm(forms.ModelForm):    
    task_date = forms.DateField(input_formats=["%Y-%m-%d"], widget=forms.Select(choices=DATE_SELECTION))
    class Meta:
        model = Task
        fields = ['task_title', 'task_description']

（^^^注意 select 小部件，input_formats，它必须始终是一个列表）

Answer 1

更新：经过大量实验和研究，我创建了以下解决方案：

models.py

class Task(models.Model):
    task_title = models.CharField(verbose_name="Название задачи: ", max_length=150)
    task_description = models.TextField(verbose_name="Описание: ", max_length=1000)
    task_user = models.ForeignKey('User', on_delete=models.CASCADE)
    task_date = models.DateField()

    def __str__(self):
        return self.task_title

（^^^注意缺少select离子场）和forms.py：

def get_today():
    return datetime.datetime.now().date()

def get_tomorrow():
    return (datetime.datetime.now() + datetime.timedelta(days=1)).date() 

TODAY = get_today
TOMORROW = get_tomorrow
DATE_SELECTION = (
        (TODAY, "Today"),
        (TOMORROW, "Tomorrow"),
    )

class TaskForm(forms.ModelForm):    
    task_date = forms.DateField(input_formats=["%Y-%m-%d"], widget=forms.Select(choices=DATE_SELECTION))
    class Meta:
        model = Task
        fields = ['task_title', 'task_description']

（^^^注意 select 小部件，input_formats，它必须始终是一个列表）

Django Datetime Choice 字段问题

Django Datetime Choice field issue

django

django-models

django-validation