我正在尝试使用Django模型formset工厂来渲染模板,用户可以在其中添加图像并更改他们上传的图像(非常类似于管理员可以完成的操作)。我目前可以将模板及其正确的字段呈现给模板。我不能做的是让用户预先选择(想要当前登录),当我刷新页面时,图像将再次发布(不确定这是否可以预防)。以下是我的代码。谢谢!
型号:
class Image(models.Model):
user = models.ForeignKey(User)
image = models.ImageField(upload_to=content_file_name, null=True, blank=True)
link = models.CharField(max_length=256, blank=True)
形式:
class ImageForm(forms.ModelForm):
image = forms.ImageField(label='Image')
class Meta:
model = Image
fields = ('image',
'link',
)
查看:
@login_required
def register(request):
user_data = User.objects.get(id=request.user.id)
ImageFormSet = modelformset_factory(Image,
fields=('user', 'image', 'link'), extra=3)
if request.method == 'POST':
print '1'
formset = ImageFormSet(request.POST, request.FILES, queryset=Image.objects.all())
if formset.is_valid():
formset.user = request.user
formset.save()
return render(request, 'portal/register.html', {'formset': formset, 'user_data': user_data})
else:
print '2'
formset = ImageFormSet(queryset=Image.objects.all())
return render(request, 'portal/register.html', {'formset': formset, 'user_data': user_data})
模板:
<form id="" method="post" action=""
enctype="multipart/form-data">
{% csrf_token %}
{{ formset.management_form }}
{% for form in formset %}
{{ form }}
{% endfor %}
<input type="submit" name="submit" value="Submit" />
答案 0 :(得分:3)
让我解释你能做到的方式。
from django.utils.text import slugify
from django.db import models
from custom_user.models import AbstractEmailUser
# User model
class UserModel(AbstractEmailUser):
full_name = models.CharField(max_length=255)
def __str__(self):
return str(self.id)
# Function for getting images from instance of user
def get_image_filename(instance, filename):
title = instance.id
slug = slugify(title)
return "user_images/%s-%s" % (slug, filename)
# Save images with user instance
class UserImages(models.Model):
user = models.ForeignKey('UserModel', db_index=True, default=None)
image = models.ImageField(upload_to=get_image_filename, verbose_name='Image', db_index=True, blank=True, null=True)
在表单中,它只是一个两个表单,一个用于模型用户,另一个用于UserImages模型。
# Images forms
class ImageForm(forms.ModelForm):
image = forms.ImageField(label='Image', required=False)
class Meta:
model = UserImages
fields = ('image',)
# User form
class UserForm(forms.ModelForm):
full_name = forms.CharField(required=True)
class Meta:
model = UserModel
fields = ('full_name','email','password',)
在观看帖子中你可以做这样的事情
# View
from models import *
from forms import *
@csrf_protect
def post_view(request):
template = 'some_template.html'
ImageFormSet = modelformset_factory(UserImages, form=ImageForm, extra=15)
if request.method == 'POST':
user_form = UserForm(request.POST, prefix='form1')
formset = ImageFormSet(request.POST, request.FILES, queryset=UserImages.objects.none(), prefix='form2')
if user_form.is_valid() and formset.is_valid():
# Save User form, and get user ID
a = user_form.save(commit=False)
a.save()
images = formset.save(commit=False)
for image in images:
image.user = a
image.save()
return HttpResponseRedirect('/success/')
else:
user_form = UserForm(prefix='form1')
formset = ImageFormSet(queryset=UserImages.objects.none(), prefix='form2')
return render(request, template, {'form_user':user_form,'formset':formset})
在模板中,你做的是正确的事。