Hi, I observed that you didn't specify the template name attribute for the BookListView and BookDetailView, that should solve you problem.
On Tuesday, October 5, 2021 at 10:37:19 PM UTC+2 [email protected] wrote: > Hello! > I’m beginner in Django. I do Django Tutorial from Mozilla. > I get TemplateDoesNotExist at /catalog/books/ . Could you help me?. I > don’t understand how to resolve it. > > */catalog/urls* > > from django.urls import path > > from . import views > > urlpatterns = [ > > path('', views.index, name='index'), > > path('books/', views.BookListView.as_view(), name='books'), > > path('book/<int:pk>', views.BookDetailView.as_view(), > name='book-detail'), > > ] > > *catalog/models* > > # Used to generate URLs by reversing the URL patterns > > from django.urls import reverse > > from django.db import models > > from django.urls import reverse > > import uuid > > # Create your models here > > class Genre(models.Model): > > """Model representing a book genre (e.g. Science Fiction, Non > Fiction).""" > > name = models.CharField( > > max_length=200, > > help_text="Enter a book genre (e.g. Science Fiction, French Poetry > etc.)" > > ) > > def __str__(self): > > """String for representing the Model object (in Admin site etc.)""" > > return self.name > > class Book(models.Model): > > """Model representing a book (but not a specific copy of a book).""" > > title = models.CharField(max_length=200) > > author = models.ForeignKey('Author', on_delete=models.SET_NULL, > null=True) > > # Foreign Key used because book can only have one author, but authors > can have multiple books > > # Author as a string rather than object because it hasn't been > declared yet in file. > > summary = models.TextField( > > max_length=1000, help_text="Enter a brief description of the book") > > isbn = models.CharField('ISBN', max_length=13, > > unique=True, > > help_text='13 Character <a href=" > https://www.isbn-international.org/content/what-isbn' > > '">ISBN number</a>') > > genre = models.ManyToManyField( > > Genre, help_text="Select a genre for this book") > > # ManyToManyField used because a genre can contain many books and a > Book can cover many genres. > > # Genre class has already been defined so we can specify the object > above. > > language = models.ForeignKey( > > 'Language', on_delete=models.SET_NULL, null=True) > > class Meta: > > ordering = ['title', 'author'] > > def display_genre(self): > > """Creates a string for the Genre. This is required to display > genre in Admin.""" > > return ', '.join([genre.name for genre in self.genre.all()[:3]]) > > display_genre.short_description = 'Genre' > > def get_absolute_url(self): > > """Returns the url to access a particular book instance.""" > > return reverse('book-detail', args=[str(self.id)]) > > def __str__(self): > > """String for representing the Model object.""" > > return self.title > > class Language(models.Model): > > name = models.CharField( > > max_length=50, help_text="Enter the book's natural language (e.g. > English, French, Japanese etc.)") > > def __str__(self): > > return self.name > > class BookInstance(models.Model): > > id = models.UUIDField(primary_key=True, default=uuid.uuid4, > > help_text="Unique ID for this particular book > across whole library") > > book = models.ForeignKey('Book', on_delete=models.SET_NULL, null=True) > > imprint = models.CharField(max_length=200) > > due_back = models.DateField(null=True, blank=True) > > LOAN_STATUS = ( > > ('m', 'Maintenance'), > > ('o', 'On loan'), > > ('a', 'Available'), > > ('r', 'Reserved'), > > ) > > status = models.CharField(max_length=1, choices=LOAN_STATUS, > > blank=True, default='m', help_text='Book > availability') > > class Meta: > > ordering = ["due_back"] > > def __str__(self): > > """ > > String for representing the Model object > > """ > > return '%s (%s)' % (self.id, self.book.title) > > class Author(models.Model): > > """ > > Model representing an author. > > """ > > first_name = models.CharField(max_length=100) > > last_name = models.CharField(max_length=100) > > date_of_birth = models.DateField(null=True, blank=True) > > date_of_death = models.DateField('Died', null=True, blank=True) > > > def get_absolute_url(self): > > """ > > Returns the url to access a particular author instance. > > """ > > return reverse('author-detail', args=[str(self.id)]) > > > def __str__(self): > > """ > > String for representing the Model object. > > """ > > return '%s, %s' % (self.last_name, self.first_name) > > *catalog/views* > > from django.views import generic > > from django.shortcuts import render > > > # Create your views here. > > from .models import Book, Author, BookInstance, Genre > > > > def index(request): > > """View function for home page of site.""" > > > # Generate counts of some of the main objects > > num_books = Book.objects.all().count() > > num_instances = BookInstance.objects.all().count() > > > # Available books (status = 'a') > > num_instances_available = BookInstance.objects.filter( > > status__exact='a').count() > > > # The 'all()' is implied by default. > > num_authors = Author.objects.count() > > > context = { > > 'num_books': num_books, > > 'num_instances': num_instances, > > 'num_instances_available': num_instances_available, > > 'num_authors': num_authors, > > } > > > # Render the HTML template index.html with the data in the context > variable > > return render(request, 'catalog/index.html', context=context) > > > > class BookListView(generic.ListView): > > """Generic class-based view for a list of books.""" > > model = Book > > paginate_by = 10 > > > > class BookDetailView(generic.DetailView): > > """Generic class-based detail view for a book.""" > > model = Book > > > *locallibrary/settings.py* > > """ > > Django settings for locallibrary project. > > > Generated by 'django-admin startproject' using Django 3.2.7. > > > For more information on this file, see > > https://docs.djangoproject.com/en/3.2/topics/settings/ > > > For the full list of settings and their values, see > > https://docs.djangoproject.com/en/3.2/ref/settings/ > > """ > > > import os > > from pathlib import Path > > > # Build paths inside the project like this: BASE_DIR / 'subdir'. > > BASE_DIR = Path(__file__).resolve().parent.parent > > > > # Quick-start development settings - unsuitable for production > > # See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/ > > > # SECURITY WARNING: keep the secret key used in production secret! > > SECRET_KEY = > 'django-insecure-k6nhe44hm-a90^cs6**sre$8ajn7u!e735ou4c(1iqk-ga&g!9' > > > # SECURITY WARNING: don't run with debug turned on in production! > > DEBUG = os.environ.get('DJANGO_DEBUG', '') != 'False' > > > ALLOWED_HOSTS = [] > > > > # Application definition > > > INSTALLED_APPS = [ > > 'django.contrib.admin', > > 'django.contrib.auth', > > 'django.contrib.contenttypes', > > 'django.contrib.sessions', > > 'django.contrib.messages', > > 'django.contrib.staticfiles', > > 'catalog.apps.CatalogConfig', > > ] > > > MIDDLEWARE = [ > > 'django.middleware.security.SecurityMiddleware', > > 'django.contrib.sessions.middleware.SessionMiddleware', > > 'django.middleware.common.CommonMiddleware', > > 'django.middleware.csrf.CsrfViewMiddleware', > > 'django.contrib.auth.middleware.AuthenticationMiddleware', > > 'django.contrib.messages.middleware.MessageMiddleware', > > 'django.middleware.clickjacking.XFrameOptionsMiddleware', > > ] > > > ROOT_URLCONF = 'locallibrary.urls' > > > TEMPLATES = [ > > { > > 'BACKEND': 'django.template.backends.django.DjangoTemplates', > > 'DIRS': [os.path.join(BASE_DIR, 'templates')], > > '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', > > ], > > }, > > }, > > ] > > > WSGI_APPLICATION = 'locallibrary.wsgi.application' > > > > # Database > > # https://docs.djangoproject.com/en/3.2/ref/settings/#databases > > > DATABASES = { > > 'default': { > > 'ENGINE': 'django.db.backends.sqlite3', > > 'NAME': BASE_DIR / 'db.sqlite3', > > } > > } > > > > # Password validation > > # > https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validators > > > AUTH_PASSWORD_VALIDATORS = [ > > { > > 'NAME': > 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator', > > }, > > { > > 'NAME': > 'django.contrib.auth.password_validation.MinimumLengthValidator', > > }, > > { > > 'NAME': > 'django.contrib.auth.password_validation.CommonPasswordValidator', > > }, > > { > > 'NAME': > 'django.contrib.auth.password_validation.NumericPasswordValidator', > > }, > > ] > > > > # Internationalization > > # https://docs.djangoproject.com/en/3.2/topics/i18n/ > > > LANGUAGE_CODE = 'en-us' > > > TIME_ZONE = 'Europe/London' > > > USE_I18N = True > > > USE_L10N = True > > > USE_TZ = True > > > > # Static files (CSS, JavaScript, Images) > > # https://docs.djangoproject.com/en/3.2/howto/static-files/ > > > STATIC_URL = '/static/' > > > # Default primary key field type > > # https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field > > > DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField' > > > *Path templates* > locallibrary > -----catalog > ------ templates > ------ base_generis.html > -------book_detail.html > ----------catalog > ----------book_list.html > ----------index.html > > *book_list.html* > > {% extends "base_generic.html" %} > > > {% block content %} > > <h1>Book List</h1> > > > {% if book_list %} > > <ul> > > > {% for book in book_list %} > > <li> > > <a href="{{ book.get_absolute_url }}">{{ book.title }}</a> > ({{book.author}}) > > </li> > > {% endfor %} > > > </ul> > > {% else %} > > <p>There are no books in the library.</p> > > {% endif %} > > {% endblock %} > > *index.html* > > {% extends "base_generic.html" %} > > > {% block title %} > > <title>Стартовая страница</title> > > {% endblock %} > > > {% block content %} > > <h1>Local Library Home</h1> > > > <p>Welcome to <em>LocalLibrary</em>, a very basic Django website developed > as a tutorial example on the Mozilla > > Developer Network.</p> > > > <h2>Dynamic content</h2> > > > <p>The library has the following record counts:</p> > > <ul> > > <li><strong>Books:</strong> {{ num_books }}</li> > > <li><strong>Copies:</strong> {{ num_instances }}</li> > > <li><strong>Copies available:</strong> {{ num_instances_available > }}</li> > > <li><strong>Authors:</strong> {{ num_authors }}</li> > > </ul> > > > {% endblock %} > > *traceback message* > > Environment: > > Request Method: GET > Request URL: http://127.0.0.1:8000/catalog/books/ > > Django Version: 3.2.7 > Python Version: 3.9.7 > Installed Applications: > [‘django.contrib.admin’, > ‘django.contrib.auth’, > ‘django.contrib.contenttypes’, > ‘django.contrib.sessions’, > ‘django.contrib.messages’, > ‘django.contrib.staticfiles’, > ‘catalog.apps.CatalogConfig’] > Installed Middleware: > [‘django.middleware.security.SecurityMiddleware’, > ‘django.contrib.sessions.middleware.SessionMiddleware’, > ‘django.middleware.common.CommonMiddleware’, > ‘django.middleware.csrf.CsrfViewMiddleware’, > ‘django.contrib.auth.middleware.AuthenticationMiddleware’, > ‘django.contrib.messages.middleware.MessageMiddleware’, > ‘django.middleware.clickjacking.XFrameOptionsMiddleware’] > > Template loader postmortem > Django tried loading these templates, in this order: > > Using engine django: > * django.template.loaders.filesystem.Loader: > /Users/nikita/Documents/Github/devsearch/hello-world/locallibrary/templates/catalog/book_list.html > > (Source does not exist) > * django.template.loaders.app_directories.Loader: > /Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/contrib/admin/templates/catalog/book_list.html > > (Source does not exist) > * django.template.loaders.app_directories.Loader: > /Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/contrib/auth/templates/catalog/book_list.html > > (Source does not exist) > * django.template.loaders.app_directories.Loader: > /Users/nikita/Documents/Github/devsearch/hello-world/locallibrary/catalog/templates/catalog/book_list.html > > (Source does not exist) > > Traceback (most recent call last): > File > “/Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/core/handlers/exception.py”, > > line 47, in inner > response = get_response(request) > File > “/Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/core/handlers/base.py”, > > line 204, in _get_response > response = response.render() > File > “/Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/template/response.py”, > > line 105, in render > self.content = self.rendered_content > File > “/Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/template/response.py”, > > line 81, in rendered_content > template = self.resolve_template(self.template_name) > File > “/Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/template/response.py”, > > line 63, in resolve_template > return select_template(template, using=self.using) > File > “/Users/nikita/Documents/Github/devsearch/hello-world/myproject_env/lib/python3.9/site-packages/django/template/loader.py”, > > line 47, in select_template > raise TemplateDoesNotExist(’, '.join(template_name_list), chain=chain) > > Exception Type: TemplateDoesNotExist at /catalog/books/ > Exception Value: catalog/book_list.html > -- You received this message because you are subscribed to the Google Groups "Django users" group. 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