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我正在尝试在 Django 1.11 中构建一个表单，其中我在监视列表上有一组复选框，以允许用户在他们希望稍后接收通知的项目上设置多个警报。但是，我不确定如何在这样的字段上表示多个选项。

这是我的模型代码：

class Watchlist(models.Model):

    CLOSES_IN_2_WEEKS, CLOSES_IN_1_WEEKS, CLOSES_IN_3_DAYS, CLOSES_TOMORROW = (
        "CLOSES_IN_2_WEEKS",
        "CLOSES_IN_1_WEEKS",
        "CLOSES_IN_3_DAYS",
        "CLOSES_TOMORROW"
    )

    ALERT_OPTIONS = (
        (CLOSES_IN_2_WEEKS, "Closes in 2 weeks",),
        (CLOSES_IN_1_WEEKS, "Closes in 1 weeks",),
        (CLOSES_IN_3_DAYS, "Closes in 3 days",),
        (CLOSES_TOMORROW, "Closes tomorrow",),
    )

    # I want to store more than one option
    alert_options = models.CharField(max_length=255, blank=True)


    def save(self):
        """
        If this is submitted create 1 alert:

        "CLOSES_IN_1_WEEKS"

        If this submitted, create 3 alerts:

        "CLOSES_IN_2_WEEKS",
        "CLOSES_IN_1_WEEKS",
        "CLOSES_IN_3_DAYS",

        """

        # split the submitted text values, to create them

        # yes, this should probably be a formset. I wasn't sure how I'd
        # handle the logic of showing 4 optional alerts, and only creating models
        # on the form submission, and remembering to delete them when a user
        # unchecked the choices in the form below

这是我正在使用的表格，如下所示。我正在__init__使用可能的选择预填充表单的方法。

class WatchlistForm(forms.ModelForm):

    alert_options = forms.ChoiceField(
        choices=[],
        label="Alert Options",
        required=False,
        widget=forms.CheckboxSelectMultiple(),
    )

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
            self.fields["alert_options"].choices = WatchlistForm.ALERT_OPTIONS

    def clean_alert_options(self):

        # I'm dropping into ipython to look around here
        import ipdb; ipdb.set_trace()

        return data["alert_options"]

    class Meta:
        model = WatchlistForm
        fields = ("alert_options")

这目前适用于单个选中的复选框，但是一旦我有多个复选框，只会选择最后一个选项，我无法弄清楚如何访问它。

我怎样才能在这里捕捉所有的选择，而不仅仅是一个？

我知道我可能应该在这里使用表单集。问题是我不清楚如何创建一组预填充的表单集选项来表示一些活动和一些非活动警报选择。

使用测试来显示我的目标

如果有帮助，我正在尝试保存信息，以便像这样存储它 - 我在测试套件中使用 pytest 添加了一些基于我的伪代码。

def test_form_accepts_multiple_alert_values(self, db, verified_user):

    form_data = {
        "user_id": verified_user.id,
        "alert_options": "CLOSES_IN_2_WEEKS CLOSES_IN_3_DAYS",
    }

    submission = forms.WatchlistForm(form_data)
    instance = submission.save()

    assert instance.alert_options == "CLOSES_IN_2_WEEKS CLOSES_IN_3_DAYS",
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