如何在验证前更改表单字段的值？

I have an FloatField in my models.py that has to store (among other things) minutes, seconds and milliseconds. It's no biggie to store them in the format of ss.ms, but I have to provide a possibility to insert them via ModelForm in the format of mm.ss.ms.
Problem is, form validation disapproves of mm.ss.ms for FloatField and I'm struggling to find a workaround.

我的models.py中有一个FloatField，它必须存储（除其他外）分钟，秒和毫秒。以ss.ms的格式存储它们并不重要，但我必须提供通过ModelForm以mm.ss.ms格式插入它们的可能性。问题是，表单验证不支持FloatField的mm.ss.ms，我很难找到解决方法。

_clean functions are great, but run after the Django validations. How to clean data from form before it gets validated by Django?

_clean函数很棒，但是在Django验证之后运行。如何在Django验证之前清除表单中的数据？

EDIT:

models.py

from django.db import models

class Result(models.Model):
    date = models.DateField()
    result = models.FloatField()
    rank = models.IntegerField(blank=True, null=True)

forms.py

class AddResult(forms.ModelForm):
    class Meta:
        model = Result
        fields = ('result', 'rank', 'date')

    def __init__(self, *args, **kwargs):
        self.profile = kwargs.pop('profile', None)
        super(AddResult, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.label_class = 'form-label-div'
        self.helper.field_class = 'form-field-div'
        self.helper.label_class = 'col-xs-4'
        self.helper.field_class = 'col-xs-8'
        self.helper.layout = Layout(
            Div(
                Div(
                    'result',
                    css_class="col-xs-4",
                ),
                Div(
                    'rank',
                    css_class="col-xs-4",
                ),
                css_class="row",
            ),
            Div(
                Div(
                    'date',
                    css_class="col-xs-4",
                    css_id="date-picker"
                ),
                Div(
                    css_class="col-xs-4",
                    css_id="date-picker"
                ),
                css_class="row",
            )
        )

    def save(self, commit=True):
        result = super(AddResult, self).save(commit=False)
        if self.profile:
            result.profile = self.profile
        result.save()

PS! Originally I wrote that I had a problematic IntegerField, but that was some kind of a brain fart. We're talking about a FloatField of course. The main question remains the same.

PS！最初我写道我有一个有问题的IntegerField，但那是一种脑屁。我们当然在谈论FloatField。主要问题仍然是一样的。

1 个解决方案

#1

I would suggest you not to use models forms instead use a forms.form and in your view before the ** form.is_valid() ** try to retrieve the form fields with the help of REQUEST method. May be this helps.

我建议你不要使用模型表单而是使用forms.form并在** form.is_valid（）**之前的视图中尝试在REQUEST方法的帮助下检索表单字段。可能这有帮助。