在新视图中找不到django模型实例

# models.py
from django.db import models

class MyModel(models.Model):
    name = models.CharField(max_length=100)

# views.py
from .models import MyModel

python manage.py makemigrations
python manage.py migrate

def my_view(request):
    instances = MyModel.objects.all()
    if not instances:
        return HttpResponse("No instances found")
    # 处理实例

# urls.py
from django.urls import path
from .views import my_view

urlpatterns = [
    path('my-view/', my_view, name='my_view'),
]

from django.core.cache import cache

cache.clear()

# views.py
from django.shortcuts import render
from .models import MyModel

def my_view(request):
    instances = MyModel.objects.all()
    return render(request, 'my_template.html', {'instances': instances})

<!-- my_template.html -->
<ul>
{% for instance in instances %}
    <li>{{ instance.name }}</li>
{% endfor %}
</ul>