[英]Using Form in Django - get() missing 1 required positional argument: 'header'
[英]Django - get_context_data() missing 1 required positional argument: 'form'
我正在嘗試將 inlineformset 添加到 Django 博客項目中。 我收到了帖子,我想通過基於類的視圖向帖子添加多個圖像。 但是當我嘗試 get_context_data 時,我收到此錯誤:
get_context_data() 缺少 1 個必需的位置參數:'form'
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)
表單.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)
視圖.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)
知道為什么我會收到這種錯誤嗎? 謝謝你。
您應該刪除form
參數。 無論如何,該表單從未在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)
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