Question

每一个，我有一个模板，它可以编辑我的数据到数据库，但是，当我尝试从模板上传图像时，只是失败，任何人都可以告诉我如何编码和工作好的，谢谢你

models.py

from django.db import models
from django.contrib.auth.models import User
from PIL import Image
from django.utils import timezone



def get_imagep_Product(instance, filename):
    return '/'.join(['products', instance.slug, filename])


class ProductsTbl(models.Model):
    model_number = models.CharField(max_length=255, blank=True, null=True)
    name = models.CharField(max_length=255, blank=True, null=True)
    material = models.TextField(blank=True, null=True)
    feature = models.TextField(blank=True, null=True)
    created = models.DateTimeField(editable=False)
    modified = models.DateTimeField(auto_now=True)
    release = models.DateTimeField(blank=True, null=True)
    submit_date = models.DateTimeField(blank=True, null=True)
    slug = models.SlugField(unique=True)
    user = models.ForeignKey(User, blank=True, null=True)
    image = models.ImageField(upload_to=get_imagep_Product, blank=True) #try to upload this image from templates

    def __unicode__(self):
        return self.name
    def save(self, *args, **kwargs):
        ''' On save, update timestamps '''

        if not self.id:
            self.created = timezone.now()
        return super(ProductsTbl, self).save(*args, **kwargs)

....

views.py

from django.shortcuts import render,redirect
from .forms import ProductsTblForm,ProductsTblUploadForm
from .models import ProductsTbl,Upload
from django.template.defaultfilters import slugify
from django.contrib.auth.decorators import login_required
from django.http import Http404,HttpResponse
import datetime
....
@login_required
def edit_thing(request, slug):
# grab the object...
    thing = ProductsTbl.objects.get(slug=slug)
    if thing.user != request.user:
        raise Http404
# set the form we're using...
    form_class = ProductsTblForm
    if request.method == 'POST':
# grab the data from the submitted form
        form = form_class(data=request.POST,instance=thing)
        if form.is_valid():
            # save the new data
            form.save()
            return redirect('thing_detail', slug=thing.slug)
# otherwise just create the form
    else:
        form = form_class(instance=thing)
# and render the template
    return render(request, 'things/edit_thing.html', {
        'thing': thing,
        'form': form,
    })
....

urls.py

from django.conf.urls import patterns, url,include
from django.contrib import admin
from django.views.generic import TemplateView
from designer import views
from designer.backends import MyRegistrationView
from django.conf import settings

urlpatterns = [
    ....
    url(r'^things/(?P<slug>[-\w]+)/edit/$', views.edit_thing, name='edit_thing'),
    ....
]

if settings.DEBUG:
    urlpatterns += [
        url(r'^media/(?P<path>.*)$', 'django.views.static.serve', {
            'document_root': settings.MEDIA_ROOT,
        }),
    ]

forms.py

from django.forms import ModelForm
from .models import ProductsTbl,Upload


class ProductsTblForm(ModelForm):
    class Meta:
        model = ProductsTbl
        fields = ('model_number','name','feature', 'material','release','image',)
....

edit_thing.html

....
{% extends 'base.html' %} {% block title %}
Edit {{ thing.name }} - {{ block.super }} {% endblock title %}
{% block content %}
<h1>Edit "{{ thing.name }}"</h1>
<form role="form" action="" method="post" enctype="multipart/form-data" >
{% csrf_token %}
{{ form.as_p }}

<br>
<button type="submit">Submit</button>

<a href="{% url 'edit_thing_uploads' slug=thing.slug %}"> Edit images</a>
</form>
{% endblock %}

当我创建内容时，我可以像link here I asked yesterday

一样上传图片

然而，当我尝试编辑表单并上传图片时失败，我不知道为什么？谢谢

Answer 1

我在views.py中解决了问题：

通过更改以下内容：

form = form_class(data=request.POST, instance=thing)

为：

form = form_class(data=request.POST, files=request.FILES, instance=thing)

django编辑并从模板上传图像

1 个答案: