[英]TastyPie: is it possible to post multiple files in a bulk request
我想發表大量帖子。 問題在於每個項目都需要一張圖像(甚至可能只有幾張)。 是否可以通過批量請求執行此操作?
該模型:
class CollageItem(models.Model):
url = models.URLField(null = True)
image = models.FileField(upload_to = 'i')
thumbnail = models.FileField(upload_to = 't')
和TastyPie對象:
class CollageItemResource(ModelResource):
image = fields.FileField(attribute = 'image', null = True, blank = true)
thumbnail = fields.FileField(attribute = 'thumbnail', null = True, blank = true)
class Meta:
queryset = CollageItem.objects.all(
resource_name = "collage_item"
我可以使用批量請求發布多張圖片,還是應該回復到單個帖子?
我走了自定義序列化器之路:
class FormPostSerializer(Serializer):
formats = ['form']
content_types = {
'form': 'multipart/form-data',
}
def from_form(self, content):
try:
dict = cgi.parse_multipart(StringIO(content), self.form_boundary)
except Exception, e:
raise e
for key, value in dict.iteritems():
dict[key] = value[0] if len(value) > 0 else None
return dict
並且是需要發布多個文件的所有資源的基類:
class FormResource(ModelResource):
class Meta:
serializer = FormPostSerializer()
def dispatch(self, request_type, request, **kwargs):
cth = request.META.get('CONTENT_TYPE') or \
request.META.get('Content-type') or \
self._meta.serializer.content_types['json']
self.Meta.serializer.form_boundary = self.parse_content_type_header(cth)
return super(FormResource, self).dispatch(request_type, request, **kwargs)
def parse_content_type_header(self, content_type_header):
parts = cgi.parse_header(content_type_header)
rv = {}
for p in parts:
if isinstance(p, dict):
rv = dict(rv.items() + p.items())
return rv
當然,序列化程序需要一些其他處理(例如,UTF8字段),我從答案中省略了這些處理。
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