以Django/Python格式上载特定文件

我在django项目中有一个上传文件表单（我使用的是1.10）。实际上，一切都很好，但由于人们将向服务器上传csv文件，我需要将我的逻辑限制为仅请求具有特定名称和格式的文件

这是我的代码：

视图.py

def list(request):
    # Handle file upload
    if request.method == 'POST':
        form = DocumentForm(request.POST, request.FILES)
        if form.is_valid():
            newdoc = Document(docfile = request.FILES['docfile'])
            newdoc.save()

            # Redirect to the document list after POST
            return HttpResponseRedirect(reverse('action'))
    else:
        messages.add_message(request, messages.ERROR,
                             'Something went wrong with files! Please contact the system administrator')
        return render(request, 'upaction-report.html')

    # Load documents for the list page

    # Render list page with the documents and the form
    return render(request, 'upaction-report.html', {'form': form})

class DocumentForm(forms.Form):
    docfile = forms.FileField(
        label='File format should be under the following format:',
        help_text='- .csv format and under the name "Action_Report"',
    )

forms.py

def list(request):
    # Handle file upload
    if request.method == 'POST':
        form = DocumentForm(request.POST, request.FILES)
        if form.is_valid():
            newdoc = Document(docfile = request.FILES['docfile'])
            newdoc.save()

            # Redirect to the document list after POST
            return HttpResponseRedirect(reverse('action'))
    else:
        messages.add_message(request, messages.ERROR,
                             'Something went wrong with files! Please contact the system administrator')
        return render(request, 'upaction-report.html')

    # Load documents for the list page

    # Render list page with the documents and the form
    return render(request, 'upaction-report.html', {'form': form})

class DocumentForm(forms.Form):
    docfile = forms.FileField(
        label='File format should be under the following format:',
        help_text='- .csv format and under the name "Action_Report"',
    )

模板html

<form action="{% url "list" %}" method="post" enctype="multipart/form-data">
    {% csrf_token %}
    <p>{{ form.non_field_errors }}</p>

    <p>{{ form.docfile.label_tag }}</p>
    <p> {{ form.docfile.help_text }}</p>


    <p>

        {{ form.docfile }}
    </p>

    <p><input type="submit" value="Upload File"/></p>
</form>

{%csrf_令牌%}
{{form.non_field_errors}}

{{form.docfile.label_tag}}

{{form.docfile.help_text}


{{form.docfile}

---

你猜怎么应用这个限制吗？如果文件不正确，只需弹出一条消息，告诉您再试一次，直到它具有正确的格式和名称。谢谢您的时间，如果您需要更多详细信息，请告诉我。

您可以在DocumentForm

clean

方法中验证文件名，如下所示：

class DocumentForm(forms.Form):
    docfile = forms.FileField(
        label='File format should be under the following format:',
        help_text='- .csv format and under the name "Action_Report"',
    )

    def clean(self):
        docfile = self.cleaned_data.get('docfile')
        if not docfile:
            raise forms.ValidationError('file is required')  
        if not docfile.name.startswith('filename'):
            raise forms.ValidationError('incorrect file name')
        if not docfile.name.endswith('fileformat'):
            raise forms.ValidationError('incorrect file format')
        return super(DocumentForm, self).clean()

---

嗨，别担心，谢谢你抽出时间。我到底该怎么办？进入我的视图。py？@Deluq不，你应该在DocumentForm类中尝试。我更新了我的答案。哦，好的，知道了。我得到一个错误AttributeError:“非类型”对象没有属性“名称”。我应该在某处设置文件名和文件格式吗？@Deluq您选择了任何文件吗？我想您看到这个错误是因为没有选择任何文件。您需要做的是验证docfile是否为None。请参阅更新的答案。@Deluq是的，没错。只需将文件名和csv作为格式插入即可。