Django 如何预填充纯为ImageFields的内联表单集?
我有两种型号:Django 如何预填充纯为ImageFields的内联表单集?,django,django-models,django-forms,django-templates,django-views,Django,Django Models,Django Forms,Django Templates,Django Views,我有两种型号:Profile和credentialage 我已经实现了inlineformsets,允许配置文件最多上载5个图像(CredentialImage) 目前,图像保存到数据库中,但当我重新访问更新表单时,它们不会预先填充,因此允许用户一次上传不限数量的照片5张。理想情况下,保存到数据库中的相同图像将预先填充到表单中,以限制配置文件一次只能拥有和编辑5张照片 根据我的理解,我需要将对象传递到页面以预填充信息,我相信我正是通过定义get\u object来做到这一点的 以下是两个模型:
Profile
和credentialage
我已经实现了inlineformsets,允许配置文件最多上载5个图像(CredentialImage)
目前,图像保存到数据库中,但当我重新访问更新表单时,它们不会预先填充,因此允许用户一次上传不限数量的照片5张。理想情况下,保存到数据库中的相同图像将预先填充到表单中,以限制配置文件一次只能拥有和编辑5张照片
根据我的理解,我需要将对象传递到页面以预填充信息,我相信我正是通过定义get\u object
来做到这一点的
以下是两个模型:
class Profile(models.Model):
...
def get_absolute_url(self):
return reverse("profile:profile_detail",
kwargs={"username": self.user})
class CredentialImage(models.Model):
profile = models.ForeignKey(Profile, default=None,
related_name='credentialimage')
image = models.ImageField(upload_to=credential_photo_upload_loc)
inlineformset_工厂的modelforms+初始化:
from django.forms.models import inlineformset_factory
class ProfileUpdateForm(ModelForm):
class Meta:
model = Profile
fields = [
"introduction",
"biography",
]
class CredentialImageForm(ModelForm):
image = ImageField()
class Meta:
model = CredentialImage
fields = ['image', ]
CredentialImageFormSet = inlineformset_factory(Profile,
CredentialImage, fields=('image', ), extra=4, max_num=4)
用于更新配置文件的基于类的UpdateView:
class ProfileUpdateView(LoginRequiredMixin, UpdateView):
form_class = ProfileUpdateForm
template_name = 'profile/profile_edit.html'
def get_context_data(self, **kwargs):
context = super(ProfileUpdateView, self).get_context_data(**kwargs)
if self.request.POST:
context['credential_image'] = CredentialImageFormSet(self.request.POST, self.request.FILES)
else:
context['credential_image'] = CredentialImageFormSet()
return context
def get_object(self, *args, **kwargs):
user_profile = self.kwargs.get('username')
obj = get_object_or_404(Profile, user__username=user_profile)
return obj
def form_valid(self, form):
data = self.get_context_data()
formset = data['credential_image']
if formset.is_valid():
self.object = form.save()
formset.instance = self.object
formset.save()
return redirect(self.object.get_absolute_url())
instance = form.save(commit=False)
instance.user = self.request.user
return super(ProfileUpdateView, self).form_valid(form)
您必须在get_context_data方法中提供一个实例
def get_context_data(self, **kwargs):
context = super(ProfileUpdateView, self).get_context_data(**kwargs)
if self.request.POST:
context['credential_image'] = CredentialImageFormSet(self.request.POST, self.request.FILES, instance=self.object)
else:
context['credential_image'] = CredentialImageFormSet(instance=self.object)
return context