我在django中保存和上传文件时遇到了问题。我一直在阅读整个教程，以便开始运行。我一直坚持这个：
'tuple' does not support the buffer interface
问题似乎来自views.py，它在保存之间停止。我希望你能指出我正确的方向..
我的上传/ views.py
# -*- coding: utf-8 -*-
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from upload.models import Files
from upload.forms import DocumentForm
# import sys, traceback
def index(request):
# Handle file upload
if request.method == 'POST':
form = DocumentForm(request.POST, request.FILES)
if form.is_valid():
newdoc = Files(file_path = request.FILES['file_path'])
newdoc.save()
# print(request)
# Redirect to the document list after POST
return HttpResponseRedirect(reverse('upload.views.index'))
else:
form = DocumentForm() # A empty, unbound form
# Load documents for the list page
documents = Files.objects.all()
# print(form)
print(documents)
# Render list page with the documents and the form
return render_to_response(
'upload/index.html', {'documents': documents, 'form': form}, RequestContext(request)
)
我的上传/ models.py
from django.db import models
# Create your models here.
class Files(models.Model):
user_id = models.IntegerField()
project_id = models.IntegerField()
file_path = models.FileField(upload_to='documents/%Y/%m/%d')
file_name = models.CharField(max_length=255)
file_size = models.CharField(max_length=45)
file_type = models.CharField(max_length=45)
file_ext = models.CharField(max_length=10)
file_width = models.SmallIntegerField()
file_height = models.SmallIntegerField()
file_tag = models.CharField(max_length=45)
location = models.TextField()
approved = models.IntegerField()
archived = models.IntegerField()
restored = models.IntegerField()
backup = models.IntegerField()
date_upload = models.DateTimeField()
date_modified = models.DateTimeField()
def __str__(self):
return 'file_name:{0}'.format(self.file_name)
class Meta:
managed = False
db_table = 'files'
上传/ forms.py
# -*- coding: utf-8 -*-
from django import forms
class DocumentForm(forms.Form):
file_path = forms.FileField(
label='Select a file',
help_text='max. 42 megabytes'
)
以下是完整的追溯：
Environment:
Request Method: POST
Request URL: http://localhost:8000/upload/
Django Version: 1.9
Python Version: 3.4.3
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'gallery',
'upload']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\core\handlers\base.py" in get_response
149. response = self.process_exception_by_middleware(e, request)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\core\handlers\base.py" in get_response
147. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "G:\python\testify\upload\views.py" in index
18. newdoc.save()
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\base.py" in save
697. force_update=force_update, update_fields=update_fields)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\base.py" in save_base
725. updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\base.py" in _save_table
809. result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\base.py" in _do_insert
848. using=using, raw=raw)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\manager.py" in manager_method
122. return getattr(self.get_queryset(), name)(*args, **kwargs)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\query.py" in _insert
1037. return query.get_compiler(using=using).execute_sql(return_id)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\sql\compiler.py" in execute_sql
985. for sql, params in self.as_sql():
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\sql\compiler.py" in as_sql
943. for obj in self.query.objs
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\sql\compiler.py" in <listcomp>
943. for obj in self.query.objs
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\sql\compiler.py" in <listcomp>
941. ) for f in fields
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\fields\files.py" in pre_save
311. file.save(file.name, file, save=False)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\fields\files.py" in save
90. name = self.field.generate_filename(self.instance, name)
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\fields\files.py" in generate_filename
332. return os.path.join(self.get_directory_name(), self.get_filename(filename))
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\db\models\fields\files.py" in get_filename
322. return os.path.normpath(self.storage.get_valid_name(os.path.basename(filename)))
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\utils\functional.py" in inner
205. self._setup()
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\core\files\storage.py" in _setup
333. self._wrapped = get_storage_class()()
File "c:\python\lib\site-packages\django-1.9.dev20150917232253-py3.4.egg\django\core\files\storage.py" in __init__
185. self.location = abspathu(self.base_location)
File "c:\python\lib\ntpath.py" in abspath
547. path = _getfullpathname(path)
Exception Type: TypeError at /upload/
Exception Value: 'tuple' does not support the buffer interface
更新： 它现在保存在数据库中，我刚刚添加了newdoc中的所有字段。我的表不允许NULL值，但问题在于：
file_path = request.FILES['file_path']
答案 0 :(得分：3)
FileField表示上传的文件对象。所以你需要传递一个文件而不是路径。
def index(request):
# Handle file upload
if request.method == 'POST':
form = DocumentForm(request.POST, request.FILES)
if form.is_valid():
newdoc = Files(file_path = form.cleaned_data['file_path'])
newdoc.save()
# print(request)
答案 1 :(得分：0)
我想我已经解决了我的问题，我发布了这个解决方案，以防有其他新手试图让这项工作成功。注意：您最好将文件字段的名称从'file_path'重命名为'file'，该文件在我的DocumentForm中，以避免命名混淆
def index(request):
# Handle file upload
if request.method == 'POST':
form = DocumentForm(request.POST, request.FILES)
if form.is_valid():
# Upload the File
uploaded_file(request)
# Save in database
newdoc = Files(
file_path = 'media/'+request.FILES['file_path'].name,
file_name = request.FILES['file_path'].name,
file_size = request.FILES['file_path'].size,
file_type = request.FILES['file_path'].content_type,
# Other data fields here..
)
newdoc.save()
# Redirect to the document list after POST
return HttpResponseRedirect(reverse('upload.views.index'))
else:
form = DocumentForm() # A empty, unbound form
# Load documents for the list page
documents = Files.objects.all()
# Render list page with the documents and the form
return render_to_response(
'upload/index.html', {'documents': documents, 'form': form}, RequestContext(request)
)
def uploaded_file(request):
uploaded_filename = request.FILES['file_path'].name
# save the uploaded file inside that folder.
full_filename = 'media/'+uploaded_filename
fout = open(full_filename, 'wb+')
file_content = ContentFile( request.FILES['file_path'].read() )
# Iterate through the chunks.
for chunk in file_content.chunks():
fout.write(chunk)
fout.close()