How Can I Resolve a TemplateDoesNotExist Error in the Django Slug Tutorial Detail View?

I'll help you troubleshoot your Django template issue. The "TemplateDoesNotExist" error suggests that Django can't find your article_detail.html template when you navigate to the detail page.

Here are some common causes and solutions for this issue:

1. Check Template Location

Make sure your article_detail.html is in the correct directory. If you're following the LearnDjango Slug Tutorial, your templates should be organized like this:

project_name/
├── app_name/
│   ├── templates/
│   │   ├── app_name/
│   │   │   ├── article_list.html
│   │   │   └── article_detail.html

2. Verify Template Name in View

Check your view to ensure it's looking for the correct template name:

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# In your views.py
def article_detail(request, pk):
    article = get_object_or_404(Article, pk=pk)
    return render(request, 'app_name/article_detail.html', {'article': article})

Note that the template path should include the app name subdirectory.

3. Check URLs Configuration

Make sure your urls.py is correctly configured:

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# In your urls.py
from django.urls import path
from .views import ArticleListView, ArticleDetailView

urlpatterns = [
    path('', ArticleListView.as_view(), name='article_list'),
    path('<int:pk>/', ArticleDetailView.as_view(), name='article_detail'),
]

4. Check INSTALLED_APPS

Ensure your app is listed in INSTALLED_APPS in settings.py:

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INSTALLED_APPS = [
    # ...
    'your_app_name',
    # ...
]

5. Check TEMPLATES Setting

Verify your TEMPLATES setting in settings.py includes the correct directories:

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TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        # ...
    },
]

If you've checked all these and still have issues, please share your project structure, views.py, and urls.py files for more specific help.