Dmitry Kuksenok

path('news_detail/<slug:slug>', news_views.NewsDetailView.as_view(), name="news_detail"),

class NewsDetailView(DetailView):
    model = News
    slug_field = 'url_news'
    context_object_name = 'news'

class News(models.Model):
    url_news = models.SlugField()

{% for news in news_list %}
  <a href="{% url 'news:news_detail' news.url_news %}">{{ news.title }}</a>
{% endfor %}