form.save() 不工作我的 form.save 更新數(shù)據(jù)不工作當(dāng)我嘗試更新我的帖子它顯示原始未經(jīng)編輯的帖子它發(fā)送保存更新的版本。我不知道是什么導(dǎo)致錯(cuò)誤 idk 如果它的視圖或任何在模板如果有人可以提供幫助，我將不勝感激，請(qǐng)?zhí)峁椭?。這是代碼：views.pyfrom django.shortcuts import renderfrom django.shortcuts import HttpResponseRedirectfrom .models import Postfrom .forms import PostFormdef post_list(request):    posts = Post.objects.all()    context = {        'post_list': posts    }    return render(request, "posts/post_list.html", context)def post_detail(request, post_id):    post = Post.objects.get(id=post_id)    context = {        'post': post    }    return render(request, "posts/post_detail.html", context)def post_create(request):    form = PostForm(request.POST or None)    if form.is_valid():        form.save()        return HttpResponseRedirect('/posts')    context = {        "form": form,        "form_type": 'Create'    }    return render(request, "posts/post_create.html", context)def post_update(request, post_id):    post = Post.objects.get(id=post_id)    form = PostForm(request.POST or None, instance=post)    if form.is_valid():        form.save()        return HttpResponseRedirect('/posts')    context = {        "form": form,        "form_type": 'Update'    }    return render(request, "posts/post_update.html", context)def post_delete(request, post_id):    post = Post.objects.get(id=post_id)    post.delete()    return HttpResponseRedirect('/posts')urls.pyfrom django.urls import pathfrom .views import post_list, post_detail, post_create, post_update, post_deleteurlpatterns = [    path('', post_list),    path('create/', post_create),    path('<post_id>/', post_detail),    path('<post_id>/update', post_update),    path('<post_id>/delete', post_delete),]post_update.html<h1>welcome to post {{ form_type }}</h1><form method="POST" action=".">    {% csrf_token %}    <p>{{ form.as_p }}</p>    <button type="submit">{{ form_type }}</button></form>