Django - 将模板上下文传递给表单

Question

作为论坛应用程序的问题页面的一部分，每个页面包含多个帖子，其中一个是问题。每个帖子可能有很多评论。但是，由于每页有很多帖子，我不知道如何将每个评论分配给的帖子传递到数据库。

我正在考虑使用HiddenInput，但不确定如何实现它。

代码如下：question_page.html

<tr id="post-comment-row">
    <!-- Post a comment -->
    {% if user.is_authenticated %}
        <tr>
            <form id="comment_form" method="post" action="."
                  enctype="multipart/form-data">
                {% csrf_token %}
                <!-- Display form -->
                {{ comment_form.as_p }}
                <!-- Provide a button to click to submit the form -->
                <input type="submit" name="submit" value="Post">
            </form>
        </tr>
    {% else %}
        Please login to post a comment
    {% endif %}
</tr>

views.py：

# Show each individual question
def show_question_page(request, module_name_slug, question_page_name_slug, post_context=None):
    context_dict = {}
    module = Module.objects.get(slug=module_name_slug)
    question_page = QuestionPage.objects.get(slug=question_page_name_slug)
    question_posts = QuestionPost.objects.filter(page=question_page)
    comments = Comment.objects.filter(post__in=question_posts)
    if request.method == 'POST':
        comment_form = CommentForm(data=request.POST)
        if comment_form.is_valid():
            # Save user data to database
            # Save comment instance
            comment = comment_form.save(commit=False)
            comment.post = post_context
            comment.user_profile = UserProfile.objects.filter(user=request.user)
            comment.save()
        else:
            # Invalid form(s): Print errors to console/log
            print(comment_form.errors)
    else:
        comment_form = CommentForm
    context_dict['question_posts'] = question_posts
    context_dict['question_page'] = question_page
    context_dict['comments'] = comments
    context_dict['module'] = module
    context_dict['comment_form'] = comment_form
    return render(request, 'forum/questionPage.html', context_dict)

Answer 1

您需要创建一个带有命名组的 URL，以便post.id捕获正在为其创建评论的帖子id。

url(r'app/post/(?P<post_id>d+)/comment/create', show_question_page, name='create-comment')

您可以在表单的操作 URL 中传递post.id。

action={% url 'create-comment' post.id %}

在视图中，您可以从请求对象获取传递的post_id并创建与帖子相关的评论。

    comment = comment_form.save(commit=False)
    post_id = request.POST.get('post_id')
    comment.post = get_object_or_404(QuestionPost, id=post_id)
    comment.user_profile = UserProfile.objects.filter(user=request.user)