如何在Django下拉菜单中设置文本？

Question

Is it possible to set a label for each item of drop down menu? It shows __str__ outputs from the module instances - items from table.

class LanguageDropDownForm(forms.Form):
    languages = forms.ModelChoiceField(queryset=Languages.objects.all().order_by('language_shortcut'))

Models.py:

class Languages(models.Model):
    language = models.CharField(max_length=100)
    language_shortcut = models.CharField(max_length=3)
    price_per_word = models.FloatField()

    def __str__(self):
        return 'SC: {} Lang: {} PPW: {}'.format(self.language_shortcut,self.language,self.price_per_word)

Could you give me an advice?

I want for example just model.language or model.name instead of __str__ method which is useful for example in admin .

Answer 1

Yea. Just use unicode instead of what you got there.

def __unicode__(self):

Answer 2

As the doc says, you should inherit the default ModelChoiceField for languages field and override label_from_instance method:

class LanguageModelChoiceField(forms.ModelChoiceField):
    def label_from_instance(self, obj):
        return 'SC: {} Lang: {} PPW: {}'.format(obj.language_shortcut,
                                                obj.language,
                                                obj.price_per_word)

Then in your form you do:

class LanguageDropDownForm(forms.Form):
    languages = LanguageModelChoiceField(queryset=Languages.objects.all().order_by('language_shortcut'))