Question

我有一个与ManyToMany关系的模型。

class File(models.Model):
    name = models.CharField(max_length=64)

    def __str__(self):
        return self.name


class Folder(models.Model):
    name = models.CharField(max_length=64)
    files = models.ManyToManyField(File, related_name='folders', default=None)

    def __str__(self):
        return self.name

串行器：

class FileSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.File
        fields = '__all__'


class FolderSerializer(serializers.ModelSerializer):
    files = FileSerializer(many=True, read_only=True)
    file = serializers.PrimaryKeyRelatedField(queryset=models.File.objects.all(),
                                          write_only=True, label='File Name')

    class Meta:
        model = models.Folder
        fields = ('id', 'name', 'files', 'file')

我可以将文件对象添加到该文件夹中。我也可以更新文件夹的名称。但是如何从文件夹中删除文件对象？

Answer 1

如果您从文件中访问

file = File.objects.get（query）

然后你可以做

file.folders.remove（folder_object）

编辑：您应用的网址文件：

urls.py：

from django.conf.urls import include, url
from .views import folder
urlpatterns = [
    url(r'remove-folder/', folder, name='remove_folder'),
]

您的应用视图views.py：

def folder(request):
    file = File.objects.get(query)
    file.folders.remove(folder_object)
    # return appropriate data

如何从Django Rest Framework中的ManyToMany关系中删除对象

1 个答案: