英文:
How to create a submit button with multiple options that can alter a csv file and post it back
问题
我试图创建一个提交按钮，列出特定用户的文件，并为每个下拉列表添加相关操作。我可以下载CSV文件并修改它，保存为新文件，但似乎无法重新发布文件并将其添加到列表中。
我卡在如何将newFile.csv添加到DocumentForm(request.POST, request.FILES)上。
models.py
class Document(models.Model):
user = models.ForeignKey(User, blank=True, null=True, on_delete=models.CASCADE)
description = models.CharField(max_length=255, blank=False)
document = models.FileField(upload_to=fileLocation)
uploaded_at = models.DateTimeField(auto_now_add=True)
forms.py
class DocumentForm(forms.ModelForm):
class Meta:
model = Document
fields = ('description', 'document')
html
{% for file in files %}
<form id="file" action="{% url 'process' %}" method="post" enctype="multipart/form-data">
{% csrf_token %}
<select name="selectedOption">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<input type="submit" value="Submit" class="btn btn-sm">
</form>
{% endfor %}
views.py
def process(request):
selected_option = request.POST.get('selectedOption')
form = DocumentForm(request.POST, request.FILES)
current_client = request.user
files = Document.objects.filter(user=current_client)
fileResponse = s3_client.get_object(Bucket=settings.AWS_STORAGE_BUCKET_NAME, Key=document)
df = pd.read_csv(fileResponse.get("Body"), encoding='utf-8', dtype=str)
df.to_csv('temp/temp.csv', index=False, header=True, encoding='utf-8-sig')
newFile = 'temp/temp.csv'
if request.method == 'POST':
form = DocumentForm(request.POST, request.FILES)
if form.is_valid():
instance = form.save(commit=False)
instance.user = request.user
instance.save()
return redirect('/filelist')
else:
form = DocumentForm()
return render(request, 'accounts/filelist.html', {'selected_option': selected_option, 'form': form, 'files': files})
请注意，这是您的代码的翻译部分，不包括代码块中的具体细节和操作。
<details>
<summary>英文:</summary>
I'm trying to create a submit button that lists files for a particular user that has actions associated to each drop down. I can download the csv file and alter it, save it as a new file but I can not seem to repost the file and add it to the list.
I am stuck how to add the newFile.csv to the DocumentForm(request.POST, request.FILES)
models.py
class Document(models.Model):
user = models.ForeignKey(User, blank=True, null=True, on_delete=models.CASCADE)
description = models.CharField(max_length=255, blank=False)
document = models.FileField(upload_to=fileLocation)
uploaded_at = models.DateTimeField(auto_now_add=True)
forms.py
class DocumentForm(forms.ModelForm):
class Meta:
model = Document
fields = ('description', 'document')
html
{% for file in files %}
<form id="file" action= "{% url 'process' %}" method="post" enctype="multipart/form-data">
{% csrf_token %}
<select name="selectedOption">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<input type="submit" value="Submit" class="btn btn-sm">
</form>
{% endfor %}
views.py
def process(request):
selected_option = request.POST.get('selectedOption')
form = DocumentForm(request.POST, request.FILES)
current_client = request.user
files = Document.objects.filter(user=current_client)
fileResponse = s3_client.get_object(Bucket=settings.AWS_STORAGE_BUCKET_NAME, Key=document)
df = pd.read_csv(fileResponse.get("Body"), encoding='utf-8', dtype=str)
df.to_csv('temp/temp.csv', index=False, header=True, encoding='utf-8-sig')
newFile = 'temp/temp.csv'
if request.method == 'POST':
form = DocumentForm(request.POST, request.FILES)
if form.is_valid():
instance = form.save(commit=False)
instance.user = request.user
instance.save()
return redirect('/filelist')
else:
form = DocumentForm()
return render(request, 'accounts/filelist.html', {'selected_option':selected_option, 'form': form, 'files': files})
[![enter image description here][1]][1]
[1]: https://i.stack.imgur.com/PX51M.png
</details>
# 答案1
**得分**: 0
更改了views.py中的post如下。
```python
if request.method == 'POST':
file_path = newFile
with open(file_path, 'rb') as file:
document_instance = Document(
user_id=request.user.id,
description="新文件"
)
document_instance.document.save(os.path.basename(file_path), file)
document_instance.save()
英文:
changed the views.py post to the below.
if request.method == 'POST':
file_path = newFile
with open(file_path, 'rb') as file:
document_instance = Document(
user_id = request.user.id,
description = "new file"
)
document_instance.document.save(os.path.basename(file_path), file)
document_instance.save()
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