用户提交博客文章后重定向到主页?

Question

我对使用 Django 和编码很陌生。所以我已经想出了如何使表单提交到我的数据库，但现在当它提交时，它只是将您带到空白blog_post视图，我不明白如何正确重定向。

以下是 views.py：

from django.shortcuts import render, redirect
from .models import post
from django.views import generic, View
from django.views.decorators.http import require_GET
from django.http import HttpResponse, HttpResponseRedirect
from .forms import PostForm
# Views for post list

class postslist(generic.ListView):
model = post
queryset = post.objects.filter(status=1).order_by('-created_on')
template_name = 'home.html'
paginate_by = 4
# view for individual post

class postdetail(generic.DetailView):
model = post
template_name = "post.html"

def blog_post(request):
form = PostForm(request.POST or None)
if request.method == "POST":
if form.is_valid():
form.instance.user = request.user
form.save()
return redirect("blog:success")
context = {'form': form,
}
return render(request, "create_post.html", context)

def success(request):
return HttpResponseRedirect("home.html")

urls.py：

from . import views
from django.urls import path, include
from .views import *

urlpatterns = [
# home
path('', views.postslist.as_view(), name='home'), 
# add post
path('blog_post/', views.blog_post, name='blog_post'),
# success for blog post
path('success/', views.success, name='success'),
# posts
path('<slug:slug>/', views.postdetail.as_view(), name='post_detail'),
]

我已经尝试了httpresponseredirect和redirect的一些变体，但我无法理解它，也无法在网上找到它。

Answer 1

假设你想重定向到postslist视图呈现的home.html，所以视图应该是这样的：

def blog_post(request):
if request.method == "POST":
form=PostForm(request.POST)
if form.is_valid():
form.instance.user = request.user
form.save()
return redirect("blog:home")
else:
form = PostForm()
context = {'form': form,
}
return render(request, "create_post.html", context)

还需要在 urls.py 中指定app_name='blog'，以便：

from . import views
from django.urls import path, include
from .views import *
app_name='blog'
urlpatterns = [
# home
path('', views.postslist.as_view(), name='home'), 
# add post
path('blog_post/', views.blog_post, name='blog_post'),
# posts
path('<slug:slug>/', views.postdetail.as_view(), name='post_detail')
]

删除该success视图不需要它。

Answer 2

您可以使用以下命令重定向到success中的家：

from django.utils import redirect

def success(request):
return redirect('blog:home')

但是，只有在表单成功的情况下，您才应重定向，因此：

def blog_post(request):
if request.method == 'POST':
form = PostForm(request.POST, request.FILES)
if form.is_valid():
form.instance.user = request.user
form.save()
return redirect('blog:home')  # 🖘 only if the form is valid
else:
form = PostForm()
context = {
'form': form,
}
return render(request, 'create_post.html', context)

然而，以上是CreateView的作用。因此，您可以使用以下方法实现这一点：

from django.contrib.auth.mixins import LoginRequiredMixin
from django.urls import reverse_lazy
from django.views.generic import CreateView

class PostCreateView(LoginRequiredMixin, CreateView):
form_class = PostForm
template_name = 'create_post.html'
success_url = reverse_lazy('blog:home')
def form_valid(self, form):
form.instance.user = request.user
return super().form_valid(form)

---

注意：您可以使用LoginRequiredMixinmixin^{[Django-doc]。}