它可能会帮助你: 在models.py中创建一个文件字段

上传文件(在admin.py中):

def save_model(self, request, obj, form, change):
    url = "http://img.youtube.com/vi/%s/hqdefault.jpg" %(obj.video)
    url = str(url)

    if url:
        temp_img = NamedTemporaryFile(delete=True)
        temp_img.write(urllib2.urlopen(url).read())
        temp_img.flush()
        filename_img = urlparse(url).path.split('/')[-1]
        obj.image.save(filename_img,File(temp_img)

并在模板中使用该字段。

你可以参考Fine Uploader中的服务器示例，它有django版本。 https://github.com/FineUploader/server-examples/tree/master/python/django-fine-uploader

它非常优雅，最重要的是，它提供了特色的js lib。Template不包含在服务器示例中，但是你可以在它的网站上找到demo。 精美上传:http://fineuploader.com/demos.html

django-fine-uploader

views.py

UploadView将post和delete请求分派给各自的处理程序。

class UploadView(View):

    @csrf_exempt
    def dispatch(self, *args, **kwargs):
        return super(UploadView, self).dispatch(*args, **kwargs)

    def post(self, request, *args, **kwargs):
        """A POST request. Validate the form and then handle the upload
        based ont the POSTed data. Does not handle extra parameters yet.
        """
        form = UploadFileForm(request.POST, request.FILES)
        if form.is_valid():
            handle_upload(request.FILES['qqfile'], form.cleaned_data)
            return make_response(content=json.dumps({ 'success': True }))
        else:
            return make_response(status=400,
                content=json.dumps({
                    'success': False,
                    'error': '%s' % repr(form.errors)
                }))

    def delete(self, request, *args, **kwargs):
        """A DELETE request. If found, deletes a file with the corresponding
        UUID from the server's filesystem.
        """
        qquuid = kwargs.get('qquuid', '')
        if qquuid:
            try:
                handle_deleted_file(qquuid)
                return make_response(content=json.dumps({ 'success': True }))
            except Exception, e:
                return make_response(status=400,
                    content=json.dumps({
                        'success': False,
                        'error': '%s' % repr(e)
                    }))
        return make_response(status=404,
            content=json.dumps({
                'success': False,
                'error': 'File not present'
            }))

forms.py

class UploadFileForm(forms.Form):

    """ This form represents a basic request from Fine Uploader.
    The required fields will **always** be sent, the other fields are optional
    based on your setup.
    Edit this if you want to add custom parameters in the body of the POST
    request.
    """
    qqfile = forms.FileField()
    qquuid = forms.CharField()
    qqfilename = forms.CharField()
    qqpartindex = forms.IntegerField(required=False)
    qqchunksize = forms.IntegerField(required=False)
    qqpartbyteoffset = forms.IntegerField(required=False)
    qqtotalfilesize = forms.IntegerField(required=False)
    qqtotalparts = forms.IntegerField(required=False)

我也有类似的要求。网上的大多数例子都要求创建模型和表单，我不想使用。这是我的最终代码。

if request.method == 'POST':
    file1 = request.FILES['file']
    contentOfFile = file1.read()
    if file1:
        return render(request, 'blogapp/Statistics.html', {'file': file1, 'contentOfFile': contentOfFile})

在HTML中我写了:

{% block content %}
    <h1>File content</h1>
    <form action="{% url 'blogapp:uploadComplete'%}" method="post" enctype="multipart/form-data">
         {% csrf_token %}
        <input id="uploadbutton" type="file" value="Browse" name="file" accept="text/csv" />
        <input type="submit" value="Upload" />
    </form>
    {% endblock %}

下面是显示文件内容的HTML:

{% block content %}
    <h3>File uploaded successfully</h3>
    {{file.name}}
    </br>content = {{contentOfFile}}
{% endblock %}

Demo

参见github repo，适用于Django 3

一个简单的Django文件上传示例

1. 创建一个django项目

运行startproject::

$ django-admin.py startproject sample

现在创建了一个文件夹(示例)。

2. 创建应用程序

创建一个应用::

$ cd sample
$ python manage.py startapp uploader

现在创建一个包含这些文件的文件夹(uploader):

uploader/
  __init__.py
  admin.py
  app.py
  models.py
  tests.py
  views.py
  migrations/
    __init__.py

3.更新settings.py

在sample/settings.py中添加'uploader'到INSTALLED_APPS，并添加MEDIA_ROOT和MEDIA_URL，即::

INSTALLED_APPS = [
    'uploader',
    ...<other apps>...      
]

MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'

4. 更新urls . py

在sample/urls.py中添加::

...<other imports>...
from django.conf import settings
from django.conf.urls.static import static
from uploader import views as uploader_views

urlpatterns = [
    ...<other url patterns>...
    path('', uploader_views.UploadView.as_view(), name='fileupload'),
]+ static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

5. 更新models.py

更新上传/ models.py::

from django.db import models
class Upload(models.Model):
    upload_file = models.FileField()    
    upload_date = models.DateTimeField(auto_now_add =True)

6. 更新views.py

更新上传/ views.py::

from django.views.generic.edit import CreateView
from django.urls import reverse_lazy
from .models import Upload
class UploadView(CreateView):
    model = Upload
    fields = ['upload_file', ]
    success_url = reverse_lazy('fileupload')
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['documents'] = Upload.objects.all()
        return context

7. 创建模板

创建文件夹sample/uploader/templates/uploader

创建文件upload_form.html ie sample/uploader/templates/uploader/upload_form.html::

<div style="padding:40px;margin:40px;border:1px solid #ccc">
    <h1>Django File Upload</h1>
    <form method="post" enctype="multipart/form-data">
      {% csrf_token %}
      {{ form.as_p }}
      <button type="submit">Submit</button>
    </form><hr>
    <ul>
    {% for document in documents %}
        <li>
            <a href="{{ document.upload_file.url }}">{{ document.upload_file.name }}</a>
            <small>({{ document.upload_file.size|filesizeformat }}) - {{document.upload_date}}</small>
        </li>
    {% endfor %}
    </ul>
</div>

8. Syncronize数据库

同步数据库和runserver::

$ python manage.py makemigrations
$ python manage.py migrate
$ python manage.py runserver

访问http://localhost: 8000 /

我也遇到过类似的问题，由django管理站点解决了。

# models
class Document(models.Model):
    docfile = models.FileField(upload_to='documents/Temp/%Y/%m/%d')

    def doc_name(self):
        return self.docfile.name.split('/')[-1] # only the name, not full path

# admin
from myapp.models import Document
class DocumentAdmin(admin.ModelAdmin):
    list_display = ('doc_name',)
admin.site.register(Document, DocumentAdmin)

它可能会帮助你: 在models.py中创建一个文件字段

上传文件(在admin.py中):

def save_model(self, request, obj, form, change):
    url = "http://img.youtube.com/vi/%s/hqdefault.jpg" %(obj.video)
    url = str(url)

    if url:
        temp_img = NamedTemporaryFile(delete=True)
        temp_img.write(urllib2.urlopen(url).read())
        temp_img.flush()
        filename_img = urlparse(url).path.split('/')[-1]
        obj.image.save(filename_img,File(temp_img)

并在模板中使用该字段。