为啥 Django 不退出会话？ .get 函数也不再像 .all 函数那样亮起？数据库中没有显示任何内容

Posted 2023-02-26

【中文标题】为啥 Django 不退出会话？ .get 函数也不再像 .all 函数那样亮起？数据库中没有显示任何内容

【英文标题】：Why is Django not pulling from session? Also .get funtion no longer lights up as the .all function does? Nothing displays from database为什么 Django 不退出会话？ .get 函数也不再像 .all 函数那样亮起？数据库中没有显示任何内容

【发布时间】：2021-04-26 15:22:26

【问题描述】：

`from django.shortcuts import render,redirect, HttpResponse` `from user_login_app.models import User` `from .models import Book,Author,Rating` `from django.contrib import messages`

def index(request):

`user=User.objects.get(id=request.session['user_id'])`===================================================On this line the get function isn't operating I can no longer pull from session and the function doesn't light up the way it did.  I also get no user display on the page. Normally the .get function highlights as the .all function does, also displays the logged in user on the page.  No I get nothing from Session. To be clear, I also made all migrations. I have items in my database. I just can't pull them out.  As I have in the past. 

`author=Author.objects.all()`

`rating=Rating.objects.all()`My context statment no longer renders anything. I double checked it agianst past projects.  those were all written very similarly. 
`context=`
    `'users':user,`
   `' authors':author,`
   `'ratings':rating,`

return render(request,'book_home.html',context)

我不明白为什么我的 .get 函数不起作用？我希望有人能解答这个谜题。

【问题讨论】：

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【参考方案1】：

你可以试试这个：

 from django.contrib.sessions.models import Session

 session = Session.objects.get(session_key=request.session.session_key)
 user_id = session.get_decoded().get('_auth_user_id')
 user = User.objects.get(pk=user_id)
 .....(rest of your code and context)
 return ......

我没有测试代码，这里你可以看看https://scottbarnham.com/blog/2008/12/04/get-user-from-session-key-in-django/，