Django框架文件上传与自定义图片上传路径、上传文件名操作分析

MEDIA_ROOT=os.path.join(BASE_DIR,r'static/uploads')

<form action="{% url 'app:do_upload' %}" 
method="post" enctype="multipart/form-data">

<form method='post' action='x' enctype='multipart/form-data'>
 {% csrf_token %}
 <input type='file' name='icon'>
 <input type='submit' value='上传'>
<form>

def savefIcon(request):
if request.method == 'POST'
 f = request.FILES['icon']
 filePath = os.path.join(settings.MEDIA_ROOT,f.name)
 with open(filePath,'wb') as fp:
  for part in f.chunks():
   fp.write(part)

def generate_filename(self, instance, filename):
 """
 Apply (if callable) or prepend (if a string) upload_to to the filename,
 then delegate further processing of the name to the storage backend.
 Until the storage layer, all file paths are expected to be Unix style
 (with forward slashes).
 """
 if callable(self.upload_to):
  filename = self.upload_to(instance, filename)
 else:
  dirname = datetime.datetime.now().strftime(self.upload_to)
  filename = posixpath.join(dirname, filename)
 return self.storage.generate_filename(filename)

import uuid
from django.db import models
def image_upload_to(instance, filename):
 return 'original_image/{uuid}/{filename}'.format(uuid=uuid.uuid4().hex, filename=filename)
class TestImageUpload(models.Model):
 image = models.ImageField(upload_to=image_upload_to)