在django表单上更新forms.FileField [英] update forms.FileField on django forms

问题描述

我有一个带有FileField的模型：

I have a model with a FileField in it:

class DocumentUpload(models.Model):
    document_name = models.CharField(max_length=100, blank=True)
    document_path = models.FileField(upload_to='uploads')

和使用此模型的表单

class DocumentUploadForm(forms.ModelForm):
    class Meta:
        model = DocumentUpload

当我使用表单创建新的上传一切正常。

When I use the form to create a new upload everything works fine.

    if request.method == 'POST':
        form = DocumentUploadForm(request.POST, request.FILES)
        if form.is_valid():
            form.save()

但是，当我尝试更新/编辑条目时，会更新所有上传的文档以外的所有字段。这只是原始上传的一样。

However when I try and update/edit the entry it updates all the fields apart from the document which is uploaded. This just stays the same as the original upload.

d = get_object_or_404(DocumentUpload, pk=id)

if request.method == 'POST':
    form = DocumentUploadForm(data=request.POST, files=request.FILES, instance=d)
    if form.is_valid():
        u = form.save()

如何在编辑实例时更改上传文件

How do I get it to change the upload file when editing the instance?

谢谢

推荐答案

既然是我的想法，将其发布为答案（仅仅是为了冲动自己的自我和/或评级）...

Since it was my idea, I'll post it up as an answer (just to stroke my own ego and/or rating)...

将以下内容添加到表单的模板中：

Add the following to your form's template:

enctype="multipart/form-data"

随时随地查看一下...

feel free to check it off as an answer...

：）

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