Graphene Django文件字段获取绝对路径

from django.db import models

class MyModel(models.Model):
    file_field = models.FileField(upload_to='uploads/')

import graphene
from graphene_django import DjangoObjectType
from myapp.models import MyModel

class MyModelType(DjangoObjectType):
    class Meta:
        model = MyModel

from django.contrib.staticfiles.templatetags.staticfiles import static
from django.conf import settings

class Query(graphene.ObjectType):
    file_field_absolute_path = graphene.String()

    def resolve_file_field_absolute_path(self, info):
        my_model_instance = MyModel.objects.first()
        file_field_path = my_model_instance.file_field.path
        absolute_path = info.context.build_absolute_uri(static(file_field_path))
        return absolute_path