Django 如何在FormMixin和DetailView中设置初始数据
我想使用泛型foreignkey创建一个注释表单,但是a在获取表单中object_id和content_type的初始数据时遇到了问题Django 如何在FormMixin和DetailView中设置初始数据,django,django-models,django-forms,django-views,mixins,Django,Django Models,Django Forms,Django Views,Mixins,我想使用泛型foreignkey创建一个注释表单,但是a在获取表单中object_id和content_type的初始数据时遇到了问题 class Comment(models.Model): user = models.ForeignKey(User, on_delete=models.CASCADE) content_type= models.ForeignKey(ContentType, on_delete=models.CASCADE) object
class Comment(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE)
content_type= models.ForeignKey(ContentType, on_delete=models.CASCADE)
object_id = models.PositiveIntegerField()
content_object= GenericForeignKey()
parent= models.ForeignKey("self", null=True, blank=True, on_delete=models.CASCADE)
content = RichTextField()
time_stamp = models.DateTimeField(auto_now_add=True)
Forms.py
class CommentsForm(forms.ModelForm):
content_type = forms.CharField(widget=forms.HiddenInput)
object_id = forms.IntegerField(widget=forms.HiddenInput)
content = forms.CharField(widget=forms.Textarea(attrs={
'class':'form-control',
'cols':'4',
'rows':'3'
}))
class Meta:
model = Comment
fields = ['content','user','object_id', 'content_type']
Views.py
class SongDetail(FormMixin, DetailView):
model = Song
form_class = CommentsForm
def post(self, request, *args, **kwargs):
obj = self.get_object()
if not request.user.is_authenticated:
return redirect('music:obj.get_absolute_url()')
if form.is_valid():
form.save()
return self.form_valid(form)
您可以这样尝试:
class SongDetail(ModelFormMixin, DetailView):
model = Song
form_class = CommentsForm
def get_initial(self):
obj = self.get_object()
return { 'content_type': obj.content_type, 'object_id': obj.object_id }
def post(self, request, *args, **kwargs):
if not request.user.is_authenticated:
return redirect('music:obj.get_absolute_url()')
form = self.get_form()
if form.is_valid():
return self.form_valid(form)
else:
return self.form_invalid(form)
仅供参考,我正在使用而不是FormMixin
,因为它提供内置的保存功能
在这里,我重写了从中返回
content\u type
和object\u id
的方法。然后这些值将被传递到表单并作为初始值加载。感谢您的回复。。。。。。我使用的是python3.8和django==3.1.1,但在获取Content_类型实例时仍然有困难