问题描述
当我尝试在 Django 的基于函数的视图中显示表单时出现错误。我可以在另一个 HTML 文件中显示它,用户可以对博客发表评论。但是,我认为如果用户可以对同一个博客详细信息 HTML 文件发表评论,对用户来说会更方便,所以我想实现它。 当我尝试时,出现此错误。 "noreverseMatch 在 /blogs/blog/30/ 反转 'blog' 没有找到任何参数。尝试了 1 个模式:['blogs/blog/(?P[0-9]+)/$']"
任何评论都可以帮助我,并提前感谢您的时间!
这是我写的代码...
from django import forms
from .models import Comment
class CommentForm(forms.ModelForm):
class Meta:
model = Comment
fields = ('user','text',)
#views.py
@login_required
def blog(request,pk):
blog = get_object_or_404(Blog,pk=pk)
form = CommentForm()
# if request.method == 'POST':
# form = CommentForm(request.POST)
# if form.is_valid():
# comment = form.save(commit=False)
# comment.blog = blog
# comment.save()
# return redirect('blog',pk=blog.pk)
# else:
# form = CommentForm()
if blog.link_1 is not None and blog.link_2 is not None:
link_1 = blog.link_1
link_2 = blog.link_2
context = {
'blog': blog,'link_1': link_1,'link_2': link_2,'form': form,}
elif blog.link_1 is not None or blog.link_2 is not None:
link_1 = blog.link_1
link_2 = blog.link_2
context = {
'blog': blog,}
else:
context = {
'blog': blog,}
return render(request,'blog/blog.html',context)
@login_required
def add_comment(request,pk=pk)
if request.method == 'POST':
form = CommentForm(request.POST)
if form.is_valid():
comment = form.save(commit=False)
comment.blog = blog
comment.save()
return redirect('blog',pk=blog.pk)
else:
form = CommentForm()
context = {
'form': form,context)
#urls.py
path('blog/<int:pk>/',views.blog,name='blog'),path('blog/<int:pk>/comment/',views.add_comment,name='add_comment'),
#blog.html
{% extends 'base.html' %}
{% block title %}|{{ blog.title }}{% endblock %}
{% block content %}
<div class="header-bar">
<a href="{% url 'blog' %}">← 戻る</a>
</div>
<div class="body-container">
<div class="created-edit-delete">
<p>
{% if request.user == blog.user %}
<a href="{% url 'dashboard' user.id %}">あなた</a>が{{ blog.created }}に作成</p>
{% else %}
{{ blog.user }}が{{ blog.created }}に作成</p>
{% endif %}
<div class="icons">
{% if request.user == blog.user %}
<a href="{% url 'blog-update' blog.id %}" class="far fa-edit"></a>
<a href="{% url 'blog-delete' blog.id %}" class="far fa-trash-alt"></a>
{% endif %}
</div>
</div>
<h1>{{ blog.title }}</h1>
<p class="blog-content">{{ blog.content_1 }}</p>
{% if blog.content_2 %}
<p class="blog-content">{{ blog.content_2 }}</p>
{% endif %}
{% if blog.content_2 %}
<p class="blog-content">{{ blog.content_3 }}</p>
{% endif %}
<div class="ref-links">
{% if link_1 %}
<a href="{{ blog.link_1 }}">参考リンク</a>
{% endif %}
{% if link_2 %}
<a href="{{ blog.link_2 }}">参考リンク</a>
{% endif %}
</div>
<hr>
<div class="comment-area">
<div class="comment-form">
<h2>New comment</h2>
<form action="{% url 'add_comment' blog.id %}" method="post">
{% csrf_token %}
{{ form.as_p }}
<button type="submit" class="button">追加</button>
</form>
</div>
<div class="comment-all">
{% for comment in blog.comments.all %}
<div class="comment">
<div class="date">{{ comment.created }}</div>
<strong>{{ comment.user }}</strong>
<p>{{ comment.text|linebreaks }}</p>
</div>
{% empty %}
<p>No comments here yet :(</p>
{% endfor %}
</div>
</div>
</div>
{% endblock %}
解决方法
您在此处调用了博客 URL <a href="{% url 'blog' %}">← 戻る</a>
并且忘记在您的 URL 中传递 id,这就是它显示此错误的原因
NoReverseMatch at /blogs/blog/30/ 'blog' 的反向匹配,没有找到任何参数。尝试了 1 个模式:['blogs/blog/(?P[0-9]+)/$']
你必须像这样在这里传递id
<a href="{% url 'blog' blog.id %}">← 戻る</a>