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我想实现一个选择框，用户可以在其中选择适当的选项并在保存之前将它们“转移”到“选定框”。Django 有这个用于管理界面，就像在这篇文章中一样，但是如何在普通网站中实现它呢？欢迎任何指向相关教程或基于以下示例的示例的链接。

这是我的many2many关系托管表模型。

# models.py
class Container(models.Model):
    container_id = models.AutoField(primary_key=True)
    location_id = models.ForeignKey(Location, db_column='location_id', on_delete = models.PROTECT)
    icon_desc = models.ForeignKey(Icon, db_column='icon_desc', null=True, blank=True, default='Box',on_delete = models.PROTECT)
    container_name = models.CharField(max_length=50, blank=True, null=True)

class Sample(models.Model):
    sample_id = models.AutoField(primary_key=True)
    containers = models.ManyToManyField(Container, through='JoinSampleContainer', through_fields=('sample_id', 'container_id'), related_name='sample')

class JoinSampleContainer(models.Model):
    id = models.AutoField(primary_key=True)
    sample_number = models.IntegerField()
    container_id = models.ForeignKey(Container, db_column='container_id', on_delete = models.PROTECT)
    sample_id = models.ForeignKey(Sample, db_column='sample_id', on_delete = models.PROTECT)

在我的 Views.py 中，我有一个正常的表单设置：

def assignsample(request):
    if request.method == "POST":
        form = AssignForm(request.POST)
        if form.is_valid():
            post = form.save(commit=False)
            post.save()
            return redirect('alldepotsamples')
    else:
        form = AssignForm()
    return render(request, 'depotsample/assignsample.html', {'form': form})

和形式：

class AssignForm(forms.ModelForm):
    class Meta:
        model = Sample
        fields = (
        'sample_id',
        'containers'
        )

这是使用占位符在 html 中呈现的：

{{ form.sample_id}}
{{ form.containers}}
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