我有一个django项目,并且在此项目中创建了一个后期操作,因此用户将可以共享多个图片后期。但是我有一个问题。我无法编写多张图片上传功能。我看了很多内容,但是没有用。它报告了一个问题,或者contex没有发送到我想要的html页面。请帮我。我想要的多图片功能应该在CreateView下,并且应该与它放在同一模板中。另外,应该有4个图片上传按钮,最后一个应该分配多个功能(以html标记)
models.py:
class Photo(models.Model):
post= models.ForeignKey(Person, on_delete=models.CASCADE)
image = models.ImageField(upload_to=get_image_filename)
uploaded_at = models.DateTimeField(auto_now_add=True)
views.py:
class PersonCreateView(CreateView):
model = Person
form_class = PersonForm
success_url = reverse_lazy('person_changelist')
forms.py:
class PhotoForm(forms.ModelForm):
image = forms.ImageField(label='Image')
class Meta:
model = Photo
fields = ('image', )
class PersonForm(forms.ModelForm):
title = forms.CharField(max_length=128)
body = forms.CharField(max_length=245, label="Item Description.")
file_field = forms.FileField(widget=forms.ClearableFileInput(attrs={'multiple': True}))
class Meta:
model = Person
widgets = {
'valyuta': forms.RadioSelect,
'barter': forms.CheckboxInput,
}
fields = ('country', 'city', 'ban', 'yurus', 'reng', 'qiymet', 'valyuta', 'yanacaqnovu', 'oturucu', 'squtu', 'buraxilisili', 'hecm', 'seher', 'barter', 'metin')
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['city'].queryset = City.objects.none()
if 'country' in self.data:
try:
country_id = int(self.data.get('country'))
self.fields['city'].queryset = City.objects.filter(country_id=country_id).order_by('name')
except (ValueError, TypeError):
pass # invalid input from the client; ignore and fallback to empty City queryset
elif self.instance.pk:
self.fields['city'].queryset = self.instance.country.city_set.order_by('name')
答案 0 :(得分:0)
查看是否可行。 创建一个简单的HTML表单,而不是Django的模型表单
<form enctype="multipart/form-data" action="" method="post">
<input type="file" name="uploaded_images" accept="image/*" multiple>
<input type="submit" name="upload" value="Upload">
</form>
您认为:
if request.method == 'POST':
for afile in request.FILES.getlist('uploaded_images'):
#Save images in respective models with the links to other models
return redirect('back/to/same/url')
这将使用户能够一次上传多张图像,并且您将能够轻松处理单个图像。
答案 1 :(得分:0)
我一直在努力解决同一问题,但最终我成功了。所以我想分享我的解决方案。
首先,我们需要创建2个模型,其中一个模型放置ImageField
并使用ForeignKey与第一个模型连接。
models.py
class Item(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="items")
name = models.CharField(max_length=100)
class ItemImage(models.Model):
item = models.ForeignKey(Item, on_delete=models.CASCADE)
img = models.ImageField(default="store/default_noitem.jpg", upload_to=get_image_dir)
然后使用inlineformset_factory
创建表单。在通过外键处理相关对象的情况下尤其有用。
forms.py
from django import forms
from django.forms.models import inlineformset_factory
from .models import Item, ItemImage
class ItemImageForm(forms.ModelForm):
class Meta:
model = ItemImage
exclude = ()
class ItemForm(forms.ModelForm):
class Meta:
model = Item
fields = ["name",]
ItemImageFormSet = inlineformset_factory(
Item, ItemImage, form=ItemImageForm,
fields=['img'], extra=3, can_delete=True # <- place where you can enter the nr of img
)
最后
views.py
class ItemCreateView(LoginRequiredMixin, SuccessMessageMixin, CreateView):
template_name = "items/add_item_form.html"
success_message = 'Item successfully added!'
form_class = ItemForm
def get_context_data(self, **kwargs):
data = super(ItemCreateView, self).get_context_data(**kwargs)
data['form_images'] = ItemImageFormSet()
if self.request.POST:
data['form_images'] = ItemImageFormSet(self.request.POST, self.request.FILES)
else:
data['form_images'] = ItemImageFormSet()
return data
def form_valid(self, form):
context = self.get_context_data()
form_img = context['form_images']
with transaction.atomic():
form.instance.user = self.request.user
self.object = form.save()
if form_img.is_valid():
form_img.instance = self.object
form_img.save()
return super(ItemCreateView, self).form_valid(form)
请记住在(self.request.POST, self.request.FILES)
标记所在的HTML格式集内添加enctype="multipart/form-data"
,在html内添加<form>
。