分配前引用的局部变量“ board”

Question

我在Django中创建网站时遇到了本地错误

from django.shortcuts import render, get_object_or_404
from .models import Board
from django.http import HttpResponse
# Create your views here.
def home(request):
    boards = Board.objects.all()
    return render(request, 'home.html', {'boards' : boards})
def board_topics(request,pk):
    board = get_object_or_404(board, pk=pk)
    return render(request,"topics.html",{'board' : board})


boards = Board.objects.all()
    return render(request, 'home.html', {'boards' : boards})

Answer 1

尝试更改

board = get_object_or_404(board, pk=pk)

到

board = get_object_or_404(Board, pk=pk)

传递给get_object_or_404（）的第一个参数是Class。来自docs

  

班   从中获取对象的Model类，Manager或QuerySet实例。