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import operator
from functools import reduce
from django.conf import settings
from django.contrib.auth.mixins import LoginRequiredMixin
from django.db.models import F, Q
from django.shortcuts import get_object_or_404
from django.views import generic
from articles.models import Article, Tag
class BaseArticleListView(generic.ListView):
model = Article
context_object_name = "articles"
paginate_by = 10
main_title = "Blog posts"
html_title = ""
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["blog_title"] = settings.BLOG["title"]
context["blog_description"] = settings.BLOG["description"]
page_obj = context["page_obj"]
if page_obj.has_next():
querystring = self.build_querystring({"page": page_obj.next_page_number()})
context["next_page_querystring"] = querystring
if page_obj.has_previous():
querystring = self.build_querystring(
{"page": page_obj.previous_page_number()}
)
context["previous_page_querystring"] = querystring
return context
def get_additional_querystring_params(self) -> dict[str, str]:
return {}
def build_querystring(self, initial_queryparams: dict[str, str]) -> str:
querystring = {
**initial_queryparams,
**self.get_additional_querystring_params(),
}
return "&".join(map(lambda item: f"{item[0]}={item[1]}", querystring.items()))
class PublicArticleListView(BaseArticleListView):
queryset = Article.objects.filter(status=Article.PUBLISHED)
class ArticlesListView(PublicArticleListView):
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
home_article: Article = Article.objects.filter(
status=Article.PUBLISHED, is_home=True
).first()
context["article"] = home_article
return context
class SearchArticlesListView(PublicArticleListView):
template_name = "articles/article_search.html"
html_title = "Search"
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["search_expression"] = self.request.GET.get("s") or ""
return context
def get_queryset(self):
queryset = super().get_queryset()
search_expression = self.request.GET.get("s")
if not search_expression:
return queryset.none()
self.html_title = f"Search results for {search_expression}"
search_terms = search_expression.split()
return queryset.filter(
reduce(operator.and_, (Q(title__icontains=term) for term in search_terms))
| reduce(
operator.and_, (Q(content__icontains=term) for term in search_terms)
)
| reduce(
operator.and_, (Q(tags__name__icontains=term) for term in search_terms)
)
).distinct()
def get_additional_querystring_params(self) -> dict[str, str]:
search_expression = self.request.GET.get("s")
if search_expression:
return {"s": search_expression}
return {}
class TagArticlesListView(PublicArticleListView):
tag = None
main_title = ""
html_title = ""
def dispatch(self, request, *args, **kwargs):
self.tag = get_object_or_404(Tag, slug=self.kwargs.get("slug"))
self.main_title = self.html_title = f"{self.tag.name} articles"
return super().dispatch(request, *args, **kwargs)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["feed_title"] = self.tag.get_feed_title()
context["feed_url"] = self.tag.get_feed_url()
return context
def get_queryset(self):
return super().get_queryset().filter(tags=self.tag)
class DraftsListView(LoginRequiredMixin, BaseArticleListView):
queryset = Article.objects.filter(status=Article.DRAFT)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["title"] = "Drafts"
context["title_header"] = context["title"]
return context
class ArticleDetailView(generic.DetailView):
model = Article
context_object_name = "article"
template_name = "articles/article_detail.html"
def get_queryset(self):
key = self.request.GET.get("draft_key")
if key:
return Article.objects.filter(draft_key=key).prefetch_related("tags")
queryset = super().get_queryset().prefetch_related("tags")
if not self.request.user.is_authenticated:
queryset = queryset.filter(status=Article.PUBLISHED)
return queryset
def get_object(self, queryset=None) -> Article:
obj: Article = super().get_object(queryset)
if not self.request.user.is_authenticated:
obj.views_count = F("views_count") + 1
obj.save(update_fields=["views_count"])
return obj
def get_context_data(self, **kwargs):
kwargs["tags"] = self.object.tags.all()
return super().get_context_data(**kwargs)