我正在尝试创建一个简单的博客，在这里我可以直接与用户交流。每个用户每个月都会有一个由Admin发布的博客帖子，他们可以对此发表评论以进行交流。工作流程如下：
管理员登录到站点->向管理员显示所有可用用户。 ->管理员点击用户->如果该用户有当月的帖子，则显示该帖子->其他创建新帖子。
这是我所拥有的：
blog / urls.py ：
Amount = 0blog / models.py：
Line = 3blog / forms.py：
const Apify = require('apify');
const cheerio = require('cheerio');
const requestPromised = require('request-promise-native');
Apify.main(async () => {
const xml = await requestPromised({
url: 'https://www.website.com/sitemap1.xml’, // <- This part needs to accept input of about 600 sitemap.xml urls in total
headers: {
'User-Agent': 'curl/7.54.0'
}
});
// Parse sitemap and create RequestList from it
const $ = cheerio.load(xml);
const sources = [];
$('loc').each(function (val) {
const url = $(this).text().trim();
sources.push({
url,
headers: {
// NOTE: Otherwise the target doesn't allow to download the page!
'User-Agent': 'curl/7.54.0',
}
});
});
const requestList = new Apify.RequestList({
sources,
});
await requestList.initialize();
// Crawl each page from sitemap
const crawler = new Apify.CheerioCrawler({
requestList,
handlePageFunction: async ({ $, request }) => {
await Apify.pushData({
url: request.url
});
},
});
await crawler.run();
console.log('Done.');
});
blog / views.py：
from django.urls import path
from .views import MessageThread, CreateThread
urlpatterns = [
path('user_thread/<int:user_id>', MessageThread.as_view(), name='message_thread'),
path('create_thread/<int:user_id>', CreateThread.as_view(), name='create_thread'),
]
blog / create_thread.html：
from django.db import models
from django.contrib.auth.models import User
class Post(models.Model):
author = models.ForeignKey(User, on_delete=models.CASCADE)
title = models.CharField(max_length=200)
text = models.TextField(max_length=9001)
posted_for = models.ForeignKey(User, related_name='posted_for', on_delete=models.CASCADE)
published_date = models.DateTimeField(blank=True, null=True)
def __str__(self):
return self.title
问题在于它甚至没有进入from django.forms import models
from .models import Post
class CreateThreadForm(models.ModelForm):
class Meta:
model = Post
fields = ['title', 'text']
类的post（）函数中。它只是抛出一个错误，说from .forms import CreateThreadForm
from django.shortcuts import render, redirect
from django.views.generic import TemplateView
from datetime import datetime
from django.contrib.auth.models import User
class CreateThread(TemplateView):
template_name = 'blog/create_thread.html'
def get(self, request, *args, **kwargs):
return render(request, self.template_name, {'form': CreateThreadForm(), 'user_id': self.kwargs['user_id']})
def post(self, request):
if 'comfirm_post' in request.POST:
form = CreateThreadForm(request.POST)
if form.is_valid():
post_details = form.save(commit=False)
post_details.author = request.user
post_details.posted_for = User.objects.get(id=request.POST['user_id'])
post_details.published_date = datetime.now()
form.save()
messages.success(request, "Successfully created post")
return redirect('message_thread', user_id=request.POST['user_id'])
messages.error(request, 'Something went wrong')
return redirect('create_thread', user_id=request.POST['user_id'])
。这是错误的完整记录：
{% extends 'navbar.html' %}
{% block content %}
<h1>Create New Thread</h1>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<button type="submit" name="comfirm_post">Create Thread</button>
</form>
{% endblock %}
我不知道该用户名来自何处。我尝试将user_id作为表单的隐藏输入进行传递，我尝试将操作更改为传递CreateThread之类的user_id，但这根本不起作用。我觉得这将是非常小的事情，但是经过数小时的搜索后我还是无法解决。任何帮助将不胜感激！
答案 0 :(得分：2)
您的网址格式中有user_id，
path('create_thread/<int:user_id>', ...
因此，您的post方法应采用user_id，并且应使用user_id而不是request.POST['user_id']：
def post(self, request, user_id):
...
post_details.posted_for = User.objects.get(id=user_id)
或者，您也可以接受*args和**kwargs，并从user_id或kwargs提取self.kwargs。
def post(self, request, *args, **kwargs):
...
post_details.posted_for = User.objects.get(id=self.kwargs['user_id'])
答案 1 :(得分：2)
由于您的网址包含user_id，因此您需要在post方法中使用该网址：
class CreateThread(TemplateView):
template_name = 'blog/create_thread.html'
def get(self, request, *args, **kwargs):
return render(request, self.template_name, {'form': CreateThreadForm(), 'user_id': self.kwargs['user_id']})
def post(self, request, user_id):
if 'comfirm_post' in request.POST:
form = CreateThreadForm(request.POST)
if form.is_valid():
post_details = form.save(commit=False)
post_details.author = request.user
post_details.posted_for = User.objects.get(id=user_id)
post_details.published_date = datetime.now()
form.save()
messages.success(request, "Successfully created post")
return redirect('message_thread', user_id=user_id)
messages.error(request, 'Something went wrong')
return redirect('create_thread', user_id=user_id)不过，您可以在此处使用CreateView [Django-doc]，这样可以减少样板代码的数量：
from django.views.generic.edit import CreateView
from django.contrib.messages.views import SuccessMessageMixin
from django.urls import reverse
class CreateThread(SuccessMessageMixin, CreateView):
template_name = 'blog/create_thread.html'
form_class = CreateThreadForm
model = Post
success_message = 'Successfully created post'
def get_context_data(self, *args, **kwargs):
context = super().get_context_data(*args, **kwargs)
context['user_id'] = self.kwargs['user_id']
return context
def get_success_url(self):
return reverse('message_thread', kwargs={'user_id': self.kwargs['user_id']})
def form_valid(self, form):
form.instance.author = request.user
form.instance.posted_for_id = self.kwargs['user_id']
form.instance.published_date = datetime.now()
return super().form_valid(form)
def post(self, request, *args, **kwargs):
if 'comfirm_post' in request.POST:
return super().post(request, *args, **kwargs)
messages.error(request, 'Something went wrong')
return redirect('create_thread', user_id=user_id)