在Django 1.3中,用户上传一个“hello world”应用程序所需的最少示例代码是什么?


当前回答

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)

其他回答

不确定这种方法是否有任何缺点,但更小,在views.py中:

entry = form.save()

# save uploaded file
if request.FILES['myfile']:
    entry.myfile.save(request.FILES['myfile']._name, request.FILES['myfile'], True)

一般来说,当你试图“只是得到一个工作示例”时,最好是“开始写代码”。这里没有代码来帮助你,所以这使得回答问题对我们来说更加困难。

如果你想抓取一个文件,你需要在一个html文件中找到这样的东西:

<form method="post" enctype="multipart/form-data">
    <input type="file" name="myfile" />
    <input type="submit" name="submit" value="Upload" />
</form>

这将给你一个浏览按钮,一个上传按钮来开始操作(提交表单),并注意enctype以便Django知道给你请求。文件

在某个视图中,你可以访问该文件

def myview(request):
    request.FILES['myfile'] # this is my file

在文件上传文档中有大量的信息

我建议您彻底阅读该页面,然后开始编写代码——当它不起作用时,再返回示例和堆栈跟踪。

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 %}

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)

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。