我正在Django中编写一个小型聊天程序,但在进一步的问题上有问题。
以下是代码:
models.py
df1 = testDf.groupby(['Date', 'Scenario'])['Value'].apply(lambda x: list(x)).reset_index()\
.pivot(index='Date', columns='Scenario', values='Value').fillna('')
# Scenario Buy Sell
# Date
# 20170323 [400]
# 20170324 [400]
# 20170325 [400, 401]
# Scenario Buy Sell
# Date
# 20170321 [400, 401]
# 20170323 [400]
# 20170324 [400]
urls.py
from django.db import models
from datetime import datetime
from django.utils import timezone
class Chat(models.Model):
chatname = models.CharField(max_length=100)
description = models.TextField()
created_at = models.DateTimeField(default=datetime.now, blank=True)
def __str__(self):
return self.chatname
class Comment(models.Model):
chat = models.ForeignKey(Chat, on_delete=models.CASCADE)
commenter = models.CharField(max_length=30)
comment = models.TextField()
created_at = models.DateTimeField(default=datetime.now, blank=True)
def __str__(self):
return self.comment
views.py
from django.conf.urls import url
from . import views
from django.views.generic import ListView
from chat.views import CommentList
app_name = 'chats'
urlpatterns = [
url(r'^$', views.index, name="index"),
url(r'^comments/(?P<pk>[0-9]+)/$', views.CommentList.as_view(), name='comments'),
]
我的comment_list.html
from django.shortcuts import render, redirect
from django.http import HttpResponse
from django.contrib.auth import authenticate, login
from django.views import generic
from .models import Chat, Comment
def index(request):
username = None
if request.user.is_authenticated():
username = request.user.username
chats = Chat.objects.all()[:10]
context = {
'chats':chats
}
return render(request, 'chat/index.html', context)
class CommentList(generic.ListView):
queryset = Comment.objects.filter(chat_id=1)
context_object_name = 'comments'
我的数据库结构包含以下两个模型:聊天和评论。每个聊天(房间)应该有自己的评论。我使用'models.ForeignKey'来过滤每个聊天(房间)的评论。在我的index.html中,我列出了所有的聊天记录,每个聊天记录都有一个指向/ comments /部分的超链接。
在我的views.py中我有这一行:'queryset = Comment.objects.filter(chat_id = 1)' Chat_id是注释sql表中的列,因为它现在只显示属于pk = 1的聊天的注释。如何自动访问聊天以获取不同的网址/评论/ 1 / /评论/ 2 /等等。?
希望解释清楚。对不起初学者,我可以尝试进一步解释它是否没有多大意义。
最佳, 费边
答案 0 :(得分:1)
您可以使用普通视图代替CommentList
:
def comments_index(request, chatid):
return render(request, 'xxx/comment_list.html', {
'comments': Comment.objects.filter(chat_id=chatid)
})
在网址中:
url(r'^comments/(?P<chatid>[0-9]+)/$', views.comments_index, name='comments'),
答案 1 :(得分:1)
您应该定义get_queryset
方法,而不是独立的queryset
属性。
def get_queryset(self, *args, **kwargs):
return Comment.objects.filter(chat_id=self.kwargs['pk'])