如何建立多个提交按钮Django的形式？

问题描述

我有形式的电子邮件一个输入和两个提交按钮订阅和取消订阅：

I have form with one input for email and two submit buttons to subscribe and unsubscribe from newsletter:

<form action="" method="post">
{{ form_newsletter }}
<input type="submit" name="newsletter_sub" value="Subscribe" />
<input type="submit" name="newsletter_unsub" value="Unsubscribe" />
</form>

我也有类形式：

class NewsletterForm(forms.ModelForm):
    class Meta:
        model = Newsletter
        fields = ('email',)

我必须写我自己的clean_email方法，我需要知道哪个按钮被形式submited。但值提交按钮在 self.cleaned_data 字典。
我能得到的按钮值，否则？

I must write my own clean_email method and I need to know by which button was form submited. But the value of submit buttons aren't in self.cleaned_data dictionary.Could I get values of buttons otherwise?

推荐答案

您可以使用 self.data这样在 clean_email 的方法来验证之前访问POST数据。它应该包含一个名为键 newsletter_sub 或 newsletter_unsub 取决于哪个按钮被pressed。

You can use self.data in the clean_email method to access the POST data before validation. It should contain a key called newsletter_sub or newsletter_unsub depending on which button was pressed.

# in the context of a django.forms form

def clean(self):
    if 'newsletter_sub' in self.data:
        # do subscribe
    elif 'newsletter_unsub' in self.data:
        # do unsubscribe

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