模型：
class Photo(models.Model):
img = models.ImageField(upload_to='photos/',max_length=254)
text = models.CharField(max_length=254,blank=True)
串行：
class PhotoSerializer(serializers.ModelSerializer):
class Meta:
model = Photo
fields = ('img','text')
观点：
class PhotoViewSet(viewsets.ModelViewSet):
queryset = Photo.objects.all()
serializer_class = PhotoSerializer
photo_router = DefaultRouter()
photo_router.register(r'photo',PhotoViewSet)
网址：
urlpatterns = [
url(r'^admin/',admin.site.urls),url(r'^api/',include(photo_router.urls)),]
POST和GET在/ api / photo /中运行良好
我之前问过类似的问题,我当然肯定,问题出在前端,使用AngularJS,我也是第一次使用AngularJS.但我想现在,我的服务器应用可能有问题.
角度代码：
var app = angular.module('myApp',['ngRoute','angularFileUpload']);
app.config(function ($routeProvider) {
$routeProvider
.when('/',{
templateUrl: 'http://127.0.0.1:8000/static/js/angular/templates/home.html'
})
});
app.config(['$httpProvider',function($httpProvider) {
$httpProvider.defaults.xsrfCookieName = 'csrftoken';
$httpProvider.defaults.xsrfHeaderName = 'X-CSRFToken';
}]);
GET控制器运行良好,我收到了所有图像：
app.controller('getController',['$scope','$http',function($scope,$http){
$http.get('/api/photo/').success(function(data){
$scope.photos = data;
}).error(function(data) {
$scope.photos = data;
});
}]);
对于文件上传,我使用了this guide
以下是指南中的代码：
app.directive('fileModel',['$parse',function ($parse) {
return {
restrict: 'A',link: function(scope,element,attrs) {
var model = $parse(attrs.fileModel);
var modelSetter = model.assign;
element.bind('change',function(){
scope.$apply(function(){
modelSetter(scope,element[0].files[0]);
});
});
}
};
}]);
app.service('fileUpload',['$http',function ($http) {
this.uploadFileToUrl = function(file,uploadUrl){
var fd = new FormData();
fd.append('file',file);
$http.post(uploadUrl,fd,{
transformRequest: angular.identity,headers: {'Content-Type': undefined}
})
.success(function(){
})
.error(function(){
});
}
}]);
app.controller('myCtrl','fileUpload',fileUpload){
$scope.uploadFile = function(){
var file = $scope.myFile;
console.log('file is ' );
console.dir(file);
var uploadUrl = "/api/photo/";
fileUpload.uploadFileToUrl(file,uploadUrl);
};
}]);
<div ng-controller = "myCtrl">
<input type="file" file-model="myFile"/>
<button ng-click="uploadFile()">upload me</button>
</div>
POST 07001 400 (Bad Request)
in responce:
img: [“No file was submitted.”]
请至少帮助理解我的问题所在,在我的REST或Angular中.我怎么调试这个？我花了一整天时间来寻找解决方案.我想我显然不明白REST api需要看起来如何.
UPD
我正在尝试使用ng-file-upload,仍然有400个响应状态.
我决定是序列化程序的问题,我在视图中覆盖POST方法,但我认为我做错了：
class PhotoViewSet(viewsets.ModelViewSet):
queryset = Photo.objects.all()
serializer_class = PhotoSerializer
def post(self,request,format=None):
serializer = PhotoSerializer(data=request.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)
以下是来自Web工具的完整请求数据：
General
Request URL:07001
Request Method:POST
Status Code:400 Bad Request
Remote Address:127.0.0.1:8000
Response Headers
Allow:GET,POST,HEAD,OPTIONS
Content-Type:application/json
Date:Wed,09 Mar 2016 14:46:44 GMT
Server:WSGIServer/0.2 CPython/3.4.3
Vary:Accept,Cookie
X-Frame-Options:SAMEORIGIN
Request Headers
Accept:application/json,text/plain,/
Accept-Encoding:gzip,deflate
Accept-Language:ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4
Connection:keep-alive
Content-Length:16635
Content-Type:multipart/form-data; boundary=—- WebKitFormBoundarytci4JfMISlMXwzFw
Cookie:sessionid=f5nyqdclupgi44zyqbmo3gkenum9k0cj; csrftoken=E0DuVDs5KrV0rSMuD5wC86RPO0QP4AgT
Host:127.0.0.1:8000
Origin:07004
Referer:07005
User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/47.0.2526.106 Safari/537.36
X-CSRFToken:E0DuVDs5KrV0rSMuD5wC86RPO0QP4AgT
Request Payload
——WebKitFormBoundarytci4JfMISlMXwzFw
Content-Disposition: form-data; name=”file”; filename=”2.jpg”
Content-Type: image/jpeg
——WebKitFormBoundarytci4JfMISlMXwzFw–
解决方法
您需要在视图中添加相关的parser_classes,并覆盖perform_create函数以从POST数据中获取文件：
class PhotoViewSet(viewsets.ModelViewSet):
queryset = Photo.objects.all()
serializer_class = PhotoSerializer
parser_classes = (MultiPartParser,FormParser,)
def perform_create(self,serializer):
serializer.save(img=self.request.data.get('img'))
# do note that at this time `text` information is not available
因为,我们发布FormData,我们使用以下解析器(link)：
parser_classes = (MultiPartParser,)
另外,请注意serializer.is_valid()抛出错误,因为它没有获取post数据中的img字段.您需要设置img而不是文件字段：
fd.append('img',file);
