How to get the label of a choice in a Django forms ChoiceField?

匆匆过客 提交于 2019-11-29 19:25:41

This may help:

reason = form.cleaned_data['reason']
reason = dict(form.fields['reason'].choices)[reason]

See the docs on Model.get_FOO_display(). So, should be something like :

ContactForm.get_reason_display()

In a template, use like this:

{{ OBJNAME.get_FIELDNAME_display }}
Kumar

This the easiest way to do this: Model instance reference: Model.get_FOO_display()

You can use this function which will return the display name: ObjectName.get_FieldName_display()

Replace ObjectName with your class name and FieldName with the field of which you need to fetch the display name of.

If the form instance is bound, you can use

chosen_label = form.instance.get_FOO_display()

Here is a way I came up with. There may be an easier way. I tested it using python manage.py shell:

>>> cf = ContactForm({'reason': 'feature'})
>>> cf.is_valid()
True
>>> cf.fields['reason'].choices
[('feature', 'A feature')]
>>> for val in cf.fields['reason'].choices:
...     if val[0] == cf.cleaned_data['reason']:
...             print val[1]
...             break
...
A feature

Note: This probably isn't very Pythonic, but it demonstrates where the data you need can be found.

You can have your form like this:

#forms.py
CHOICES = [('feature', "A feature"), (order", "An order")]
class ContactForm(forms.Form):
     reason = forms.ChoiceField(choices=CHOICES,
                                widget=forms.RadioSelect)

Then this would give you what you want:

reason = dict(CHOICES)[form.cleaned_data["reason"]]

I think maybe @webjunkie is right.

If you're reading from the form from a POST then you would do

def contact_view(request):
    if request.method == 'POST':
        form = ContactForm(request.POST)
        if form.is_valid():
            contact = form.save()
            contact.reason = form.cleaned_data['reason']
            contact.save()

Im using @Andrés Torres Marroquín way, and I want share my implementation.

GOOD_CATEGORY_CHOICES = (
    ('paper', 'this is paper'),
    ('glass', 'this is glass'),
    ...
)

class Good(models.Model):
    ...
    good_category = models.CharField(max_length=255, null=True, blank=False)
    ....

class GoodForm(ModelForm):
    class Meta:
        model = Good
        ...

    good_category = forms.ChoiceField(required=True, choices=GOOD_CATEGORY_CHOICES)
    ...


    def clean_good_category(self):
        value = self.cleaned_data.get('good_category')

        return dict(self.fields['good_category'].choices)[value]

And the result is this is paper instead of paper. Hope this help

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!