有人可以帮我在django rest api中用POST方法上传文件, 例如,当我启动时
curl -X POST 127.0.0.1:8000/api/v1/assets/ -d '{"name" = "my image ","source"="/root/images/my_image2.jpg"}' -H "Content-Type: application/json"
我想上传my_image2.jpg
serializers.py:
from django.forms import widgets
from rest_framework import serializers
from .models import Asset
class AssetSerializer(serializers.ModelSerializer):
class Meta:
model = Asset
views.py:
from .serializers import AssetSerializer
from django.http import Http404
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework import status
from rest_framework.decorators import api_view
class AssetAdd(APIView):
def post(self, request, format=None):
serializer = AssetSerializer(data=request.DATA)
print serializer.data
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
models.py
class Asset(models.Model):
key = models.CharField(max_length=8, unique=True, editable=False)
name = models.CharField(_('name'), max_length=200)
source = models.FileField(_('file'), upload_to=upload_to, storage=default_storage)
ext = models.CharField(max_length=15, editable=False)
type = models.PositiveIntegerField(choices=ASSET_TYPE, max_length=15, editable=False)
size = models.PositiveIntegerField(max_length=32, default=0, editable=False)
_file_meta = models.TextField(editable=False, null=True, blank=True)
public = models.BooleanField(default=False)
position = models.PositiveIntegerField(default=1)
object_id = models.PositiveIntegerField(default=1)
content_type = models.ForeignKey(ContentType, blank=True, null=True)
content_object = generic.GenericForeignKey('content_type', 'object_id')
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now_add=True, auto_now=True)
我是Django REST API中的新手,我阅读了文档http://www.django-rest-framework.org/api-guide/parsers.html#fileuploadparser,但仍然没有找到如何做到这一点
答案 0 :(得分:21)
首先,您需要在视图中定义解析器。这是因为API需要知道要查找哪些标头。浏览器将文件作为表单数据传输,因此您需要同时使用MultiPartParser和FormParser。您也可以使用FileUploadParser,但需要确保客户端正在发送正确的HTTP标头。
from rest_framework.parsers import MultiPartParser, FormParser
class AssetAdd(APIView):
parser_classes = (MultiPartParser, FormParser,)
然后,在post方法中,您的文件将出现在FILES QueryDict中:
def post(self, request, format=None):
my_file = request.FILES['file_field_name']
filename = '/tmp/myfile'
with open(filename, 'wb+') as temp_file:
for chunk in my_file.chunks():
temp_file.write(chunk)
my_saved_file = open(filename) #there you go
答案 1 :(得分:0)
这样编写模型:
from django.db import models
class PicModel(models.Model):
file_to_be_uploaded = models.FileField(upload_to='/directory/where/you/what/to/upload/to')
如果您上传图像,则使用ImageField,但要按pip install pillow
安装枕头。
在您serializers.py
中,假设您正在使用rest_framework
:
from rest_framework import serializers
from app_name.models import PicModel
class PicSerializer(serializers.ModelSerializer):
class Meta:
model = PicModel
fields = '__all__' #or any way you may like to display you fields
在您views.py
中,假设您要使用基于类的视图:
from app_name.models import PicModel
from app_name.serializers import PicModelSerializer
#other necessary imports
class PicList(APIView):
def post(self, request, format=None):#or format can be json or api
serializer = PicModelSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
............more code
要在json数据中进行测试,请输入以下内容:
{
"file_to_be_uploaded":"//path//to//file//on//local//machine"
}