DRF(Django-Rest-FrameWork)非主外键自关联

model.py

class SysPermission(models.Model):
    id = models.CharField(db_column='Id', primary_key=True, max_length=50)  # Field name made lowercase.
    parentid = models.CharField(db_column='ParentId', max_length=50, blank=True, null=True)  # Field name made lowercase.
    layer = models.IntegerField(db_column='Layer', blank=True, null=True)  # Field name made lowercase.
    encode = models.CharField(db_column='EnCode', max_length=50, blank=True, null=True)  # Field name made lowercase.
    name = models.CharField(db_column='Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    jsevent = models.CharField(db_column='JsEvent', max_length=50, blank=True, null=True)  # Field name made lowercase.
    icon = models.CharField(db_column='Icon', max_length=50, blank=True, null=True)  # Field name made lowercase.
    url = models.CharField(db_column='Url', max_length=255, blank=True, null=True)  # Field name made lowercase.
    remark = models.CharField(db_column='Remark', max_length=255, blank=True, null=True)  # Field name made lowercase.
    type = models.IntegerField(db_column='Type', blank=True, null=True)  # Field name made lowercase.
    sortcode = models.IntegerField(db_column='SortCode', blank=True, null=True)  # Field name made lowercase.
    ispublic = models.IntegerField(db_column='IsPublic', blank=True, null=True)  # Field name made lowercase.
    isenable = models.IntegerField(db_column='IsEnable', blank=True, null=True)  # Field name made lowercase.
    isedit = models.IntegerField(db_column='IsEdit', blank=True, null=True)  # Field name made lowercase.
    deletemark = models.IntegerField(db_column='DeleteMark', blank=True, null=True)  # Field name made lowercase.
    createuser = models.CharField(db_column='CreateUser', max_length=50, blank=True, null=True)  # Field name made lowercase.
    createtime = models.DateTimeField(db_column='CreateTime', max_length=50, blank=True, null=True, auto_now_add=True)  # Field name made lowercase.
    modifyuser = models.CharField(db_column='ModifyUser', max_length=50, blank=True, null=True)  # Field name made lowercase.
    modifytime = models.DateTimeField(db_column='ModifyTime', max_length=50, blank=True, null=True, auto_now=True)  # Field name made lowercase.

    class Meta:
        db_table = 'sys_permission'

序列器

class sysPermissionSerializer(serializers.ModelSerializer):
    modifytime = serializers.DateTimeField(format="%Y-%m-%d %H:%M:%S",  read_only=True)
    children = serializers.SerializerMethodField()
    def get_children(self, data):
        queryset = SysPermission.objects.filter(parentid=data.id).all()
        children = sysPermissionSerializer(queryset,many=True).data
        if children:
            return children
        else:
            return ""

    class Meta:
        model = SysPermission
        fields = ('id', 'parentid', 'name', 'icon',  'type', 'url', 'sortcode', 'isenable', 'jsevent', 'modifytime', 'children')
        read_only_fields = ('id',)

views.py

class sysPermissionViewSet(viewsets.ModelViewSet):
    """
    菜单接口
    """
    queryset = SysPermission.objects.all()
    serializer_class = sysPermissionSerializer
    # filter_fields = ('id',)
    # pagination_class = sysUserSetPagination

    def get(self, request:Response, *args, **kwargs):
        code = Response.status_code
        queryset = SysPermission.objects.filter(parentid__in='0').all()
        serializer = self.get_serializer(instance=queryset, many=True)
        json = returnJson(code, serializer.data) #returnJson是我自己封装的返回方法
        return Response(json)

urls.py

path('sysPermission', sysPermissionViewSet.as_view({'get':'get'})),

最后效果: