[英]Django - get_context_data() missing 1 required positional argument: 'form'
I am trying to add inlineformset to the Django Blog project.我正在尝试将 inlineformset 添加到 Django 博客项目中。 I got post and I want to add multiple images to the post via Class Based Views.我收到了帖子,我想通过基于类的视图向帖子添加多个图像。 But when I am trying to get_context_data I receive this error:但是当我尝试 get_context_data 时,我收到此错误:
get_context_data() missing 1 required positional argument: 'form' get_context_data() 缺少 1 个必需的位置参数:'form'
Models.py:模型.py:
class Post(models.Model):
title = models.CharField(max_length=100)
content = RichTextField(blank=True, null=True)
class PostImage(models.Model):
post = models.ForeignKey(Post, default=None, on_delete=models.CASCADE)
image = models.ImageField(upload_to='gallery/')
description = models.CharField(max_length=300, blank=True)
Forms.py表单.py
class CreatePostForm(forms.ModelForm):
class Meta:
model = Post
fields = ['title' , 'content' ]
PostImageFormSet = inlineformset_factory(Post, PostImage, fields=['image', 'description'], exclude=['post'] , max_num=30, extra=3)
Views.py视图.py
class PostCreateView(LoginRequiredMixin, CreateView):
form_class = CreatePostForm
template_name = 'blog/post_form.html'
def get_context_data(self, form):
context = super(PostCreateView. self).get_context_data(**kwargs)
if self.request.POST:
context['post_images'] = PostImageFormSet(self.request.POST)
else:
context['post_images'] = PostImageFormSet()
return context
def form_valid(self, form):
context = self.get_context_data(form=form)
formset = context['post_images']
form.instance.author = self.request.user
if formset.is_valid():
response = super().form_valid(form)
formset.instance = self.object
formset.save()
return response
else:
return super().form_invalid(form)
Any idea why I am receiving this kind of error?知道为什么我会收到这种错误吗? Thank you.谢谢你。
You should remove the form
parameter.您应该删除form
参数。 The form is never used in the get_context_data
anyway:无论如何,该表单从未在get_context_data
使用:
class PostCreateView(LoginRequiredMixin, CreateView):
form_class = CreatePostForm
template_name = 'blog/post_form.html'
def get_context_data(self, *args, **kwargs):
context = super().get_context_data(*args, **kwargs)
if self.request.POST:
context['post_images'] = PostImageFormSet(self.request.POST)
else:
context['post_images'] = PostImageFormSet()
return context
def form_valid(self, form):
context = self.get_context_data()
formset = context['post_images']
form.instance.author = self.request.user
if formset.is_valid():
response = super().form_valid(form)
formset.instance = self.object
formset.save()
return response
else:
return super().form_invalid(form)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.