现在我如何获得登录我的网站的用户名django

INSTALLED_APPS = [
    ...
    'django.contrib.auth',
    'django.contrib.contenttypes',
    ...
]

MIDDLEWARE = [
    ...
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    ...
]

from django.contrib.auth.models import User

from django.contrib.auth.models import AbstractUser

class CustomUser(AbstractUser):
    # 添加自定义字段
    pass

AUTH_USER_MODEL = 'your_app.CustomUser'

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)
            # 登录成功后的操作
        else:
            # 登录失败的操作
    else:
        # 显示登录表单