Python 我无法从后端Django检索OneToOneField数据

我可以从用户（例如User.id）的后端获取数据，但当我想从OneToOneField（例如User.checkAdmin.isAdmin）获取数据时，它不会在html页面中显示任何数据

views.py

def registerView(request):
    if request.method == "POST":
        form = UserCreationForm(request.POST)
        isAdminForm = checkAdminForm(request.POST) #
        if form.is_valid() and isAdminForm.is_valid():
            user = form.save()
            isAdminFormObject = isAdminForm.save(commit=False)
            isAdminFormObject.user = user
            isAdminFormObject.save()
            return redirect('login_url')
    else:
        form = UserCreationForm()
        isAdminForm = checkAdminForm()

    return render(request, 'registration/register.html',{'form':form,'isAdminForm':isAdminForm})

Forms.py

from django import forms
from .models import checkAdmin


class checkAdminForm(forms.ModelForm):
    class Meta:
        model =  checkAdmin
        fields = ['isAdmin']

models.py

from django.db import models
from django.contrib.auth.models import User

# Create your models here.

class checkAdmin(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    isAdmin = models.BooleanField(default=False)

    def __str__(self):
        return self.user.username

dashboard.html

{% extends 'index.html' %}
{% block content %}
   <h1>Welcome, {{ user.id }}</h1>
   <h1>check?,{{ user.checkAdmin.isAdmin }}</h1>


    <button>Mark Attendance</button>  <button>Mark Leave</button>  <button>View Attance</button>
<a href="{% url 'logout' %}">Logout</a>
{% endblock %}

{%extends'index.html%}
{%block content%}
欢迎，{{user.id}
检查？，{user.checkAdmin.isAdmin}
标记考勤标记休假视图附件
{%endblock%}

使用checkadmin而不是checkadmin

{% extends 'base.html' %}
{% block content %}
   <h1>Welcome, {{ user.id }}</h1>
   <h1>check?,{{ user.checkadmin.isAdmin }}</h1>
   <button>Mark Attendance</button>  <button>Mark Leave</button>  <button>View Attance</button>
    <a href="">Logout</a>
{% endblock %}

{%extends'base.html%}
{%block content%}
欢迎，{{user.id}
检查？，{user.checkadmin.isAdmin}
标记考勤标记休假视图附件
{%endblock%}

非常感谢，先生。。它起作用了。。请告诉我为什么这个用小写字母写，而不是我在model.py类名中写的checkAdmin？类名在Django模板变量中转换为小写字母。我不知道确切的原因。请将答案标记为已接受