0

我得到了以下模型：

class currency(models.Model):
    currency = models.CharField(max_length=50)
    dollaramount = models.DecimalField(max_digits=10, decimal_places=2)
    def __unicode__(self):
        return self.currency

该模型包含 2 个带有货币值“$”和“€”的条目

货币模型与以下表单中的 ModelChoiceField 相关，该表单具有用户定义的验证“clean_amount”，用于检查金额，具体取决于从 from 本身在货币字段中实际选择的货币。

如果所选对象的值为“$”或“€”，我如何在 userdef-validation“clean_amount”中进行比较？

from django import forms
from currencies.models import currency

class createform(forms.Form):
    currency = forms.ModelChoiceField(queryset = currency.objects.all())
    amount = forms.DecimalField(initial = 0)

    def clean_amount(self):
        currencyfield = self.cleaned_data['currency']
        amount = self.cleaned_data['amount']
        if amount < 0:
            raise forms.ValidationError("Amount must be at least 0.")

        #HERE I WANT TO CHECK
        choosencurrency = currencyfield.??????

        if choosencurrency == "$" :
           #check $amount
        if choosencurrency == "€" :
           #check €amount

    return amount
4

1 回答 1

1

你应该这样做clean()，而不是clean_amount()。从clean您可以访问self.cleaned_data['amount']和self.cleaned_data['currency']。

于 2013-06-02T11:51:13.667 回答