Django输入值列表ForeignKey

Question

对于M2O关系，我应该在表单中使用哪个字段

型号.py

class Studio(models.Model):
    name = models.SlugField(max_length=100)
    rating = models.CharField(max_length=10, default=None)

    def __str__(self):
        return self.name

class AnimeDetail(models.Model):
    title_japanese = models.CharField(max_length=250)
    studio = models.ForeignKey(Studio, on_delete=models.CASCADE, default=None)
    ...

forms.py

from .models import AnimeDetail

class AnimeDetailForm(forms.ModelForm):

    class Meta:
        model = AnimeDetail
        fields = ['icon', 'image', 'title_japanese', 'title_english', 'studio', 'genre', 'total_episodes', 'posted_episodes', 'season', 'date_started', 'date_finished', 'status', 'type_anime', 'age', 'source']

        widgets = {
            'title_japanese': forms.TextInput(attrs={'class': 'form-control'}),
            'studio':forms.Select(attrs={'class': 'form-control'}),
            ...
        }

'studio':forms.Select(attrs={'class': 'form-control'})->；选择在这种情况下不能正常工作，但在其他项目中工作没有问题

错误：

怎么了

Answer 1

M2M使用SelectMultiple而不是Select小部件

替换

'studio':forms.SelectMultiple(attrs={'class': 'form-control'}),