Илья Лукьянов

settings.py:
...
LOGIN_REDIRECT_URL = '/game/'
...

<a href="{% url 'auth_login' %}?next=/game/">Auth</a>

from news import views

path('archive/', views.archive, name='news-archive')

from django.urls import reverse

reverse('news-archive')

# Можно так:
def get_absolute_url(self):
    return "/people/%i/" % self.id

# Но лучше так:
def get_absolute_url(self):
    from django.urls import reverse
    return reverse('people.views.details', args=[str(self.id)])

<a href="{{ object.get_absolute_url }}">{{ object.name }}</a>

<!-- Так не надо делать -->
<a href="/language/category/product/{{product.pk}}">Link</a>

<!-- надо так -->
<a href="{{product.get_absolute_url}}">Link</a>

# MyUser
from django.contrib.auth.models import AbstractUser
from django.db import models

class MyUser(AbstractUser):
    # ...
    class Meta:
        swappable = 'AUTH_USER_MODEL'

# MyUserCreationForm
from django import forms
from django.contrib.auth.forms import UserCreationForm
from .models import MyUser

class MyUserCreationForm(UserCreationForm):
    class Meta:
        model = MyUser
        fields = ('username', 'password1', '...')

# view
from django.urls import reverse_lazy
from django.views.generic.edit import CreateView
from .forms import MyUserCreationForm
from .models import MyUser

class MyUserCreateView(CreateView):
    model = MyUser
    form_class = MyUserCreationForm
    template_name = 'registration/registration_form.html'
    success_url = reverse_lazy('blog:index')

# urls
from django.urls import path, include
from .views import MyUserCreateView

urlpatterns = [
    path('auth/', include('django.contrib.auth.urls')),
    path('auth/registration/', MyUserCreateView.as_view(), name='registration'),
]

class PostListView(ListMixin, ListView):model = Post
    ordering = '-pub_date'
    paginate_by = 10
    template_name = 'blog/index.html'

    def get_queryset(self):
        queryset = super().get_queryset().all( ).annotate(comment_count=Count("comments"))
        
        if self.request.user.is_authenticated  # Проверяем пользователь авторизованный или нет
            return queryset.filter(author=self.request.user) 
        return queryset.filter(category__is_published=True, 
                                          is_published=True,
                                          pub_date__lte=timezone.now())

def get_queryset(self):
        queryset = super().get_queryset().all( ).annotate(comment_count=Count("comments"))
        
        if self.request.user.is_authenticated  # Проверяем пользователь авторизованный или нет
            queryset =  queryset.filter(author=self.request.user) 
        if not queryset:  # либо можно так - if not len(queryset): 
            queryset = queryset.filter(category__is_published=True, 
                                              is_published=True,
                                              pub_date__lte=timezone.now())
        return queryset

class User(models.Model):
    ....
    is_author = models.BooleanField(default=False)
    ...

...
    def get_queryset(self):
        queryset = super().get_queryset().all( ).annotate(comment_count=Count("comments"))
        
        if self.request.user.is_authenticated and self.request.user.is_author:
            return queryset.filter(author=self.request.user) 
        return queryset.filter(category__is_published=True, 
                                          is_published=True,
                                          pub_date__lte=timezone.now())