django fileup-load

文件上传

使用form表单类的上传

forms.py

from django import forms

class UploadFileForm(forms.Form):

    title = forms.CharField(max_length=50)

    file = forms.FileField()

view处理这个form将会从request.FILES中接收file data，它是一个包含所有表单中FileField、ImageField和其他FileField的子类的字典，获取某个文件用request.FILES['filename']

注：上传文件的form表单必须是POST method,并且enctyoe="ultipart/form-data"。否则request.FILES将为空。

大多数情况下，您只需将文件数据从请求传递到表单，就像绑定上传文件到表单中所描述的那样。例如：

views.py

from django.http import HttpResponseRedirect

from django.shortcuts import render

from .forms import UploadFileForm

# Imaginary function to handle an uploaded file.

from somewhere import handle_uploaded_file

def upload_file(request):

    if request.method == 'POST':

        form = UploadFileForm(request.POST, request.FILES)

        if form.is_valid():

            handle_uploaded_file(request.FILES['file'])

            return HttpResponseRedirect('/success/url/')

    else:

        form = UploadFileForm()

    return render(request, 'upload.html', {'form': form})

# 上传文件

def handle_uploaded_file(f):

with open('some/file/name.txt', 'wb+') as destination:

    for chunk in f.chunks():

        destination.write(chunk)

注：通过UploadedFile.chunks()进行循环而不是使用read()可以确保大文件不会淹没系统的内存。

Handling uploaded files with a model

# models.py

from django.contrib.auth.models import AbstractUser

class UserInfo(AbstractUser):

	nid = models.AutoField(primary_key=True)

    telephone = models.CharField(max_length=11, null=True, unique=True)

    avatar = models.FileField(upload_to='avatars/', default="avatars/default.png")

# forms.py

from django.http import HttpResponseRedirect

from django.shortcuts import render

from .forms import ModelFormWithFileField

def upload_file(request):

    if request.method == 'POST':

        form = ModelFormWithFileField(request.POST, request.FILES)

        if form.is_valid():

            # file is saved

            form.save()

            return HttpResponseRedirect('/success/url/')

    else:

        form = ModelFormWithFileField()

    return render(request, 'upload.html', {'form': form})

多文件上传

forms.py

from django import forms

class FileFieldForm(forms.Form):

    file_field = forms.FileField(widget=forms.ClearableFileInput(attrs={'multiple': True}))

重写FormView

# views.py

from django.views.generic.edit import FormView

from .forms import FileFieldForm

class FileFieldView(FormView):

    form_class = FileFieldForm

    template_name = 'upload.html'  # Replace with your template.

    success_url = '...'  # Replace with your URL or reverse().

    def post(self, request, *args, **kwargs):

        form_class = self.get_form_class()

        form = self.get_form(form_class)

        files = request.FILES.getlist('file_field')

        if form.is_valid():

            for f in files:

                ...  # Do something with each file.

            return self.form_valid(form)

        else:

            return self.form_invalid(form)

巴特西

django fileup-load

文件上传

使用form表单类的上传

Handling uploaded files with a model

多文件上传

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