3

我需要以 django 形式将多个图像添加到一个模型中。我做了一项研究，对于 django 之外的表单，我尝试设置django-multiupload。

我的模型.py：

class Profile(models.Model):
    ...
    ...
    first = models.ImageField("first", upload_to='first')
    second = models.ImageField("second", upload_to='second')
    ...

在 forms.py 中：

class AddForm(forms.ModelForm):
    first = MultiImageField(min_num=1, max_num=20)
    second = MultiImageField(min_num=1, max_num=4)

在views.py中：

class UploadView(FormView):
    template_name = 'finder/submit.html'
    form_class = AddForm
    success_url = '/'

    def form_valid(self, form):
        for each in form.cleaned_data['first']:
            Profile.objects.create(first=each)
        for each in form.cleaned_data['second']:
            Profile.objects.create(second=each)
        return super(UploadView, self).form_valid(form)

在提交表单时，此表单会创建多个 Profile 对象，其中仅填写第一个/第二个字段。

如何仅创建一个具有剩余字段（第一个/第二个除外）和多个第一/第二个字段的模型？

这是我在添加多重上传之前基于函数的视图，但我无法让它工作，也许以某种方式更改它更容易？

def add_form(request, *args, **kwargs):
    if request.method == "POST":
        form = AddForm(request.POST)
        if form.is_valid():
            profile = form.save(commit=False)
            profile.save()
            return redirect('/', pk=profile.pk)
    else:
        form = AddForm()
    return render(request, 'finder/submit.html', {'form': form})
4

1 回答 1

2

我从未使用过 Django-multiupload，但我碰巧阅读了一些文档。

如果您想为您的用户模型保存多个文件，您可能需要创建另一个模型来容纳这些文件并向 Profile 模型添加一个外键。从 Profile 模型中删除第一个和第二个字段。它会导致您创建具有相同数据的多个配置文件以容纳多个图像。

简单的例子，

class Image(models.Model):
    image = models.FileField()
    profile = models.ForeignKey(Profile, related_name='images')
    is_first = models.BooleanField(default=False)
    is_second = models.BooleanField(default=False)

然后，在表单中编辑保存方法，

class AddForm(forms.ModelForm):
    first = MultiImageField(min_num=1, max_num=20)
    second = MultiImageField(min_num=1, max_num=4)

    class Meta:
        model = Profile
        fields = (.......... 'first', 'second')

    def save(self, commit=True):
        first_images = self.cleaned_data.pop('first')
        second_images = self.cleaned_data.pop('second')
        instance = super(AddForm, self).save()
        for each in first_images:
           first = Image(image=each, profile=instance, is_first=True)
           first.save()

        for each in second_images:
           second = Image(image=each, profile=instance, is_second=True)
           second.save()

        return instance

然后，在视图上，编辑视图，

class UploadView(FormView):
    template_name = 'finder/submit.html' 
    form_class = AddForm 
    success_url = '/' 

    def form_valid(self, form): 
        instance = form.save(commit=False)
        instance.user = self.request.user
        instance.save()

        return super(UploadView, self).form_valid(form)

或者在基于功能的视图中，

def add_form(request, *args, **kwargs): 
    if request.method == "POST": 
        form = AddForm(request.POST)
        if form.is_valid(): 
            profile = form.save(commit=False) 
            profile.user = request.user
            profile.save() 
            return redirect('/', pk=profile.pk) 
    else: 
        form = AddForm() 
    return render(request, 'finder/submit.html', {'form': form})
于 2017-05-19T17:11:06.233 回答