Django Framework got Server Error 500 when DEBUG to False - django

Question

I am using Django framework for project. I am rendering the HTML templet
def index(request):
print(" --- check fine?") # for print debug
trees = Tree.objects.all()
print(trees)
return render(request, "index.html", {'trees': trees})
--- check fine?
<QuerySet [<Tree: Tree object (8)>, <Tree: Tree object (10)>, <Tree: Tree object (11)>, <Tree: Tree object (12)>]>
[06/Feb/2021 17:28:44] "GET / HTTP/1.1" 500 145
these are my urls.
urlpatterns = [
path("", views.index, name="index"),
path('about/', views.about , name='about'),
path('contact/', views.contact , name='contact'),
path('upload/', views.upload_file , name='upload'),
]
DEBUG = False I am getting above error.
when I set my
DEBUG = True every thing works fine means show index.html and shows even data too.
setting DEBUG = False make difficult to find an error.
index.html contains below code which fetches data.
{% for tree in trees %}
<article class="col-lg-3 col-md-4 col-sm-6 col-12 tm-gallery-item">
<figure>
<img src="{{tree.image.url}}" alt="Image" class="img-fluid tm-gallery-img" />
<figcaption>
<h4 class="tm-gallery-title">{{tree.name}}</h4>
<p class="tm-gallery-description">{{tree.desc}}</p>
<!-- <p class="tm-gallery-price"></p> -->
</figcaption>
</figure>
</article>
{% endfor %}
and allowed hosts are.
ALLOWED_HOSTS = ['*','127.0.0.1','localhost']

Answer 1

Check this out:
Django returns an HTTP status code of 500, an Internal Server Error, when Django encounters runtime errors in a view, such as a syntax error or a view failing to return an object that Django expects. Closely related to errors in view logic is that Django itself will raise the TemplateDoesNotExist exception when an error is encountered in a view, the DEBUG setting is set to False, and a 500.html template is not found.
Beginning with Django 1.5 a new “allowed hosts” setting was introduced. When DEBUG is set to False, it is enforced. In your settings.py file, find the that looks like:
ALLOWED_HOSTS = []
and change it to include the Droplet’s IP address and/or the domain name pointing to your site. For example:
ALLOWED_HOSTS = ["example.com", "111.111.111.111"]
Source:
https://docs.webfaction.com/software/django/troubleshooting.html#:~:text=Django%20returns%20an%20HTTP%20status,an%20object%20that%20Django%20expects.
https://www.digitalocean.com/community/questions/server-error-500-django-digital-ocean

Answer 2

This are varible from settings.py
STATIC_URL = "/static/"
STATIC_ROOT = os.path.join(BASE_DIR, "staticfiles")
STATICFILES_DIRS = [
os.path.join(BASE_DIR, 'static'),
]
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'
# STATICFILES_STORAGE = "whitenoise.storage.CompressedStaticFilesStorage"
due to STATICFILES_STORAGE collectstatic were using whitenoise engine. I comment STATICFILES_STORAGE .
I suggest to delete all STATIC_ROOT directry in above case /staticfiles folder.
and use
python manage.py collectstatic
to collect files.
and use this in url
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
path('', include('ourhouse.urls')),
path('admin/', admin.site.urls),
# path('accounts/',include('accounts.urls'))
]+static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
to use static and media files.