简单的Django图像上传 - 图像文件不保存 [英] Simple Django Image Upload - Image file not saving

问题描述

正确我正在学习如何做一个简单的图像上传表单将图像上传到MEDIA_ROOT。该表单呈现良好，我没有错误，但该文件没有显示在MEDIA_ROOT目录中。如果遵循文档示例，不能让它工作，我知道这是因为我没有理解django文件正确上传。所以这里是我的代码：

Right I'm learning how to do a simple image upload form to upload an image to MEDIA_ROOT. The form renders fine, I get no errors, but the file is not showing up in the MEDIA_ROOT directory. If followed the documentation example and can't get it to work and I know it is because I have not understood django file upload handeling properly. So here is my code:

forms.py

from django import forms

class UploadImageForm(forms.Form):
    image = forms.ImageField()

views.py

def merchant_image_upload(request):
    if request.method == 'POST':
        form = UploadImageForm(request.POST, request.FILES)
        if form.is_valid():
            FileUploadHandler(request.FILES['image'])
            return HttpResponseRedirect('/dashboard/gallery')
    else:
        form = UploadImageForm()
    return render_to_response('gallery.html', RequestContext(request, {'form': form}))

模板文件

{% extends 'base.html' %}
{% block main %}
    <form action="{% url scvd.views.merchant_image_upload %}" method="post">{% csrf_token %}
        {{ form.image }}
        <input type="submit" value="Upload" />
    </form>
{% endblock %}

希望这是足够的信息来获得帮助。请让我知道我还能提供什么谢谢，我非常感谢帮助。

Hopefully that's sufficient info to get some help. Please let me know what else I can provide. Thank you, I really appreciate the help.

推荐答案

你不需要把它附加到一个模型中，Matt S说，请求.FILES具有图像的所有数据，如果您的表单设置正确。

You don't need to attach it to a model as Matt S states, request.FILES has all the data for the image if your form is set up correctly.

您需要确保使用 enctype =multipart / form-data在您的元素中，文档状态为： https://docs.djangoproject.com/en/dev/ref/forms/api/#binding-uploaded-files-to-a-form

You need to make sure use enctype="multipart/form-data" in your element, as the docs state here: https://docs.djangoproject.com/en/dev/ref/forms/api/#binding-uploaded-files-to-a-form

除此之外，请阅读有关文件上传的文档： https://docs.djangoproject.com/en/dev/topics/http/file-uploads/

Aside from that, read the docs about file uploads: https://docs.djangoproject.com/en/dev/topics/http/file-uploads/

您需要的所有文件都记录在案。希望这有帮助！

All you need is well documented there. Hope this helps!

EDIT OP请求有关文件上传的更多信息

从文档：

大多数时候，您只需将请求中的文件数据传递到
中的表单，如将上传的文件绑定到表单。这将
看起来像：

Most of the time, you'll simply pass the file data from request into the form as described in Binding uploaded files to a form. This would look something like:

from django.http import HttpResponseRedirect
from django.shortcuts import render_to_response

# Imaginary function to handle an uploaded file.
from somewhere import handle_uploaded_file

def upload_file(request):
    if request.method == 'POST':
        form = UploadFileForm(request.POST, request.FILES)
        if form.is_valid():
            handle_uploaded_file(request.FILES['file'])
            return HttpResponseRedirect('/success/url/')
    else:
        form = UploadFileForm()
    return render_to_response('upload.html', {'form': form})

他们有一个例子，说明如何编写 handle_uploaded_file 函数：

And they have an example of how you could write the handle_uploaded_file function:

def handle_uploaded_file(f):
    destination = open('some/file/name.txt', 'wb+')
    for chunk in f.chunks():
        destination.write(chunk)
    destination.close()

这篇关于简单的Django图像上传 - 图像文件不保存的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！