Django:创建帖子后显示消息

# models.py
from django.db import models

class Post(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextField()
    author = models.ForeignKey(User, on_delete=models.CASCADE)

# views.py
from django.shortcuts import render, redirect
from django.contrib import messages
from .forms import PostForm

def create_post(request):
    if request.method == 'POST':
        form = PostForm(request.POST)
        if form.is_valid():
            post = form.save(commit=False)
            post.author = request.user
            post.save()
            messages.success(request, '帖子创建成功！')
            return redirect('post_list')
    else:
        form = PostForm()
    return render(request, 'create_post.html', {'form': form})

# create_post.html
{% if messages %}
    <ul class="messages">
        {% for message in messages %}
            <li{% if message.tags %} class="{{ message.tags }}"{% endif %}>{{ message }}</li>
        {% endfor %}
    </ul>
{% endif %}

<form method="post" action="{% url 'create_post' %}">
    {% csrf_token %}
    {{ form.as_p }}
    <button type="submit">创建帖子</button>
</form>