如何从Django登录页面重定向到单页面应用程序？

from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login

def login_view(request):
    if request.method == 'POST':
        username = request.POST['username']
        password = request.POST['password']
        user = authenticate(request, username=username, password=password)
        if user is not None:
            login(request, user)
            return redirect('/app/')  # 将用户重定向到单页面应用程序的URL
        else:
            return render(request, 'login.html', {'error': 'Invalid credentials'})
    else:
        return render(request, 'login.html')