Django sending users to the wrong template location? - django

Question

I'm working on Python Crash Course Chapter 19, where we are setting up a 'learning log' application. I'm stuck (on page 440) with a template reference error.
I have reworked this section of the book, in addition to taking all of the updates listed here: https://ehmatthes.github.io/pcc/chapter_19/README.html
but seem to keep getting what looks to be a template reference error. I noticed the template is referencing the 'learning_logs' directory when looking for the login.html, which is incorrect -- it should be looking in the 'learning_log' directory.
learning_log\users\urls.py
from django.contrib.auth import views as auth_views
from . import views
app_name = 'users'
urlpatterns = [
# Login page.
path('login/',
auth_views.LoginView.as_view(template_name='users/login.html'),
name='login'),
]
learning_logs\urls.py
"""learning_logs URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/2.2/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: path('', views.home, name='home')
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: path('', Home.as_view(), name='home')
Including another URLconf
1. Import the include() function: from django.urls import include, path
2. Add a URL to urlpatterns: path('blog/', include('blog.urls'))
"""
"""Defines URL patterns for learning_logs."""
from django.urls import path
from . import views
app_name = 'learning_logs'
urlpatterns = [
# Home page.
path('', views.index, name='index'),
#Show all topics.
path('topics/', views.topics, name='topics'),
#Detail page for a single topic.
path('topics/<int:topic_id>/', views.topic, name='topic'),
#Page for adding a new topic.
path('new_topic/', views.new_topic, name='new_topic'),
#Page for adding a new entry.
path('new_entry/<int:topic_id>/', views.new_entry, name='new_entry'),
#Page for editing an entry.
path('edit_entry/<int:entry_id>/', views.edit_entry, name='edit_entry'),
]
learning_log\urls.py
"""learning_log URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/2.2/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: path('', views.home, name='home')
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: path('', Home.as_view(), name='home')
Including another URLconf
1. Import the include() function: from django.urls import include, path
2. Add a URL to urlpatterns: path('blog/', include('blog.urls'))
"""
from django.urls import path, include
from django.contrib import admin
urlpatterns = [
path('admin/', admin.site.urls),
path('users/', include('users.urls')),
path('', include('learning_logs.urls')),
]
Here is the browser error:
TemplateDoesNotExist at /users/login/
users/login.html
Request Method:
GET
Request URL:
http://localhost:8000/users/login/
Django Version:
2.2.1
Exception Type:
TemplateDoesNotExist
Exception Value:
users/login.html
Exception Location:
C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\loader.py in select_template, line 47
Python Executable:
C:\Users\kevin\Documents\webapps\11_env\Scripts\python.exe
Python Version:
3.7.3
Python Path:
['C:\\Users\\kevin\\Documents\\webapps',
'C:\\Users\\kevin\\AppData\\Local\\Programs\\Python\\Python37-32\\python37.zip',
'C:\\Users\\kevin\\AppData\\Local\\Programs\\Python\\Python37-32\\DLLs',
'C:\\Users\\kevin\\AppData\\Local\\Programs\\Python\\Python37-32\\lib',
'C:\\Users\\kevin\\AppData\\Local\\Programs\\Python\\Python37-32',
'C:\\Users\\kevin\\Documents\\webapps\\11_env',
'C:\\Users\\kevin\\Documents\\webapps\\11_env\\lib\\site-packages']
Server time:
Sun, 26 May 2019 22:14:26 +0000
Template-loader postmortem
Django tried loading these templates, in this order:
Using engine django:
django.template.loaders.app_directories.Loader: C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\contrib\admin\templates\users\login.html (Source does not exist)
django.template.loaders.app_directories.Loader: C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\contrib\auth\templates\users\login.html (Source does not exist)
django.template.loaders.app_directories.Loader: C:\Users\kevin\Documents\webapps\learning_logs\templates\users\login.html (Source does not exist)
Here is the server error:
Traceback (most recent call last):
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\base.py", line 145, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\base.py", line 143, in _get_response
response = response.render()
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 106, in render
self.content = self.rendered_content
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 81, in rendered_content
template = self.resolve_template(self.template_name)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 63, in resolve_template
return select_template(template, using=self.using)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\loader.py", line 47, in select_template
raise TemplateDoesNotExist(', '.join(template_name_list), chain=chain)
django.template.exceptions.TemplateDoesNotExist: users/login.html
[26/May/2019 15:12:27] "GET /users/login/ HTTP/1.1" 500 79384
Not Found: /users/
[26/May/2019 15:12:39] "GET /users/ HTTP/1.1" 404 3224
Internal Server Error: /users/login/
Traceback (most recent call last):
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\base.py", line 145, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\base.py", line 143, in _get_response
response = response.render()
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 106, in render
self.content = self.rendered_content
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 81, in rendered_content
template = self.resolve_template(self.template_name)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 63, in resolve_template
return select_template(template, using=self.using)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\loader.py", line 47, in select_template
raise TemplateDoesNotExist(', '.join(template_name_list), chain=chain)
django.template.exceptions.TemplateDoesNotExist: users/login.html
[26/May/2019 15:12:43] "GET /users/login/ HTTP/1.1" 500 79384
Internal Server Error: /users/login/
Traceback (most recent call last):
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\base.py", line 145, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\core\handlers\base.py", line 143, in _get_response
response = response.render()
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 106, in render
self.content = self.rendered_content
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 81, in rendered_content
template = self.resolve_template(self.template_name)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\response.py", line 63, in resolve_template
return select_template(template, using=self.using)
File "C:\Users\kevin\Documents\webapps\11_env\lib\site-packages\django\template\loader.py", line 47, in select_template
raise TemplateDoesNotExist(', '.join(template_name_list), chain=chain)
django.template.exceptions.TemplateDoesNotExist: users/login.html

Answer 1

double check your templates directory in settings and make sure slashes are forward slashes / not \
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [''],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},

Answer 2

Are you sure you haven't mistyped anything? I do that heaps and it always messes up my programs. Try checking where you've typed learning_logs or learning_log and see if you need to add or remove an s.

Answer 3

It appears that the book suggests you save the login.html file to the learning_log/users/templates folder, but it should be in the learning_logs folder. Once I moved the templates, that fixed my issue. Thank you both Nurhun and Lumiobyte!