Question

我在这里上传多个文件，但是在添加时遇到了一些问题。外键不存储每个上传的文件。如何为每个选择的文件存储外键？ Cannot assign "<property object at 0x04667960>": "MoreImage.image_title" must be a "Gallery" instance.

模型

class Gallery(models.Model):
    image_title = models.CharField(max_length=100, blank=True, null=True)
    image_date = models.DateField(blank=True, null=True)
    image = models.ImageField(upload_to='gallery', default='default.png')
class MoreImage(models.Model):
    image_title = models.ForeignKey(Gallery, on_delete=models.CASCADE)
    images = models.ImageField(upload_to='moreimage', default='default.png')
    date = models.DateTimeField(auto_now_add=True)

观看次数

def add_more_image(request):
    images = Gallery.objects.all().order_by('-date')
    if request.method == 'POST':
        form = MoreImageForm(request.POST or None, request.FILES or None)
        if form.is_valid():
            more = form.save(commit=False)
            for file in request.FILES.getlist('image'):     
                MoreImage.objects.create(image_title=Gallery.pk, images=file)
                #for field in request.FILES.keys():
                #for form_file in request.FILES.getlist(field):
                    #img = MoreImage(image_title_id=Gallery.pk,images=form_file)
                    #img.save()
            more.save()
            messages.success(request, ' Images added.')
            return redirect('admin:add_gallery')

MOreImage表单

class MoreImageForm(forms.ModelForm):
    class Meta:
        model = MoreImage
        fields = '__all__'

Answer 1

首先，您不应该调用 Gallery.pk ，因为它是类，因此不会返回任何内容。它应该类似于 gallary_instance.pk

而且我认为gallary_instance.pk对您不起作用，因为您设置了 commit=False ，这会阻止将对象保存到数据库中。

尝试一下

def add_more_image(request):
    images = Gallery.objects.all().order_by('-date')
    if request.method == 'POST':
        form = MoreImageForm(request.POST or None, request.FILES or None)
        if form.is_valid():
            more = form.save()  # remove commit=False
            for file in request.FILES.getlist('image'):
                MoreImage.objects.create(image_title=more.image_title, images=file)
            messages.success(request, ' Images added.')
            return redirect('admin:add_gallery')

如何在上传多个文件时为每个文件设置外键？

1 个答案: