表格和 Photologue 的问题

Question

我正在使用 Pinax 创建一个新项目。对于这个项目，我需要创建一个新的应用程序“业务”，它很像个人资料，但他们希望为企业保留所有内容。

我试图让管理员能够更改商家资料的徽标或“头像”。我使用 Photologue 中的 ImageModel 类来控制图像上传等，但我遇到了问题。当浏览表单时，表单会浏览并重定向，但图像实际上并未更新。当您通过 django admin 时，图像上传正常。

如果有人可以看一下是否缺少什么东西，我已经盯着它看了太久了，所以我需要一双新的眼睛。

Business Models.py

class Business(models.Model):
name = models.CharField(verbose_name="Name", max_length=140)
desc = models.TextField(verbose_name="Description", null=True, blank=True)
bus_type = models.CharField(verbose_name="Business Type", choices=BUSINESS_TYPES, max_length=20)
location = models.CharField(_("location"), null=True, blank=True, max_length=200)
website = models.URLField(_("website"), null=True, blank=True, verify_exists=False)
created_by = models.ForeignKey(User, related_name="Created By")
admin = models.ManyToManyField(User, related_name="Admin User", null=True, blank=True)
followers = models.ManyToManyField(User, related_name="Followed by", null=True, blank=True)
date_added = models.DateField(verbose_name="Date Added")

class Meta:
    verbose_name = "Business"
    verbose_name_plural = "Businesses"

def __unicode__(self):
    return self.name

class BusinessLogo(ImageModel):
business = models.ForeignKey(Business, related_name="Business Association")

我的views.py

@login_required
def changeLogo(request, bus_id):
user = request.user
b = get_object_or_404(Business, pk = bus_id)
if request.method == 'POST':
    form = ChangeLogoForm(request.POST, request.FILES, instance = b)
    if form.is_valid():
        biz_logo = form.save(commit=False)
        biz_logo.save()

        return HttpResponseRedirect('/')

else:
    form = ChangeLogoForm()

return render_to_response('business/changelogo.html',
                        {'user': user, 'form':form, 'b':b}, context_instance=RequestContext(request))

Forms.py

class ChangeLogoForm(ModelForm):
class Meta:
    model = BusinessLogo

def save(self, force_insert=False, force_update=False, commit=True):
    f = super(ChangeLogoForm, self).save(commit=False)
    if commit:
        f.save()
        print "form save method was called with commit TRUE"
    return f

最后是我的changelogo.html

...
{% block body %}
<h1>Change Logo</h1>
<form method="POST" action="" enctype="multipart/form-data">
{% csrf_token %}
{{ form.as_p }}
<input type="submit" value="Upload">
</form>

{% endblock %}
...

谢谢大家的浏览。

史蒂夫

Answer 1

ChangeLogoForm 的模型是 BusinessLogo，但是在调用它的构造函数时，您向其传递一个 Business 实例：（

b = get_object_or_404(Business, pk = bus_id)
...
form = ChangeLogoForm(request.POST, request.FILES, instance = b)

并且您可能应该使用 >OneToOneField 字段而不是 ForeignKey）