尽管我在模板中添加了表单但未显示的原因

Question

我在我的 Django 项目中创建了一个新的评论模型，但尽管我在模板中添加了表单，但表单没有显示在浏览器中。

这是models.py

class Comment(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    post = models.ForeignKey(Post, on_delete=models.CASCADE)
    body = models.TextField(max_length=300)

    def __str__(self):
        return str(self.pk)

以下是观点：

def comment_create(request, self):
    post = get_object_or_404(Post, slug=self.kwargs['slug'])
    user = User.objects.get(user=request.user)

    c_form = CommentModelForm()

    context = {
        'post': post,
        'user': user,
        'c_form': c_form,
    }
    return context

这是forms.py

class CommentModelForm(forms.ModelForm):
    body = forms.CharField(label='',
                            widget=forms.TextInput(attrs={'placeholder': 'Add a comment...'}))
    class Meta:
        model = Comment
        fields = ('body',)

这里是 urls.py

    path('blogs/comment', comment_create, name='comment-post'),

这是模板：

                <form action="" method="POST"class='ui fluid form'>
                    {% csrf_token %}
                    <input type="hidden" name="post_id" value={{post.id}}>
                      {{ c_form }}
                    <button type="submit" name="submit_c_form" class="">Send</button>
                </form>

Answer 1

首先，您必须获取请求的类型，我为 GET 和 POST 请求添加了 if/else。添加了 form.is_valid 检查。

在您的函数中，您试图从 url 中获取一个 kwarg，但您的路径中没有 kwarg。

path('blogs/<slug:slug>/comment', comment_create, name='comment-post'),

views.py

def comment_create(request, self):
    post = get_object_or_404(Post, slug=self.kwargs['slug'])

    if request.method == 'POST': # If user submitted form
        c_form = CommentModelForm(request.POST) # Get form response
        if c_form.is_valid(): # Chekc if form is valid
            c_form.user = User.objects.get(user=request.user) # Get user and add it to form
            c_form.post = post # Add post to form
            c_form.save() # Save form
    else:
        c_form = CommentModelForm() # Pass form

    context = {
        'post': post,
        'c_form': c_form,
    }
    return render(request, 'app/comment.html', context) # change template

forms.py

class Meta:
        model = Comment
        fields = ['body'] # When I set tuples it normally gives me an error