166 lines
5.1 KiB
Python
166 lines
5.1 KiB
Python
from typing import Any, Optional, Type
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from django.contrib.postgres.search import TrigramSimilarity
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from django.db import models
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from django.utils import timezone
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from django.utils.functional import cached_property
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from modelcluster.fields import ParentalManyToManyField
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from wagtail.admin.panels import FieldPanel
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from wagtail.search import index
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from wagtailautocomplete.edit_handlers import AutocompletePanel
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from website.common.models import BaseContentPage, BaseListingPage
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from website.common.utils import TocEntry
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from website.common.views import ContentPageFeed
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from website.contrib.singleton_page.utils import SingletonPageCache
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class BlogPostListPage(BaseListingPage):
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max_count = 1
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subpage_types = [
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"blog.BlogPostPage",
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"blog.BlogPostTagListPage",
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"blog.BlogPostCollectionListPage",
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"blog.BlogPostCollectionPage",
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]
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@cached_property
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def show_table_of_contents(self) -> bool:
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return False
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def get_listing_pages(self) -> models.QuerySet:
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return (
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BlogPostPage.objects.descendant_of(self)
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.live()
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.public()
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.order_by("-date", "title")
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)
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@property
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def feed_class(self) -> Type[ContentPageFeed]:
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from .views import BlogPostPageFeed
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return BlogPostPageFeed
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@cached_property
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def tag_list_page_url(self) -> Optional[str]:
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return SingletonPageCache.get_url(BlogPostTagListPage)
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class BlogPostPage(BaseContentPage):
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subpage_types: list[Any] = []
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parent_page_types = [BlogPostListPage, "blog.BlogPostCollectionPage"]
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tags = ParentalManyToManyField("blog.BlogPostTagPage", blank=True)
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date = models.DateField(default=timezone.now)
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promote_panels = BaseContentPage.promote_panels + [
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FieldPanel("date"),
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AutocompletePanel("tags"),
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]
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search_fields = BaseContentPage.search_fields + [
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index.RelatedFields("tags", [index.SearchField("title", boost=1)])
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]
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@cached_property
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def tag_list_page_url(self) -> Optional[str]:
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return SingletonPageCache.get_url(BlogPostTagListPage)
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def get_similar_posts(self) -> models.QuerySet:
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try:
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listing_pages = BlogPostListPage.objects.get().get_listing_pages()
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except BlogPostListPage.DoesNotExist:
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return BlogPostPage.objects.none()
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similar_posts = listing_pages.exclude(id=self.id).annotate(
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title_similarity=TrigramSimilarity("title", self.title),
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# If this page has no subtitle, ignore it as part of similarity
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subtitle_similarity=TrigramSimilarity("subtitle", self.subtitle)
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if self.subtitle
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else models.Value(1),
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)
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page_tags = list(self.tags.values_list("id", flat=True))
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similar_posts = similar_posts.annotate(
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# If this page has no tags, ignore it as part of similarity
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tag_similarity=models.Count("tags", filter=models.Q(tags__in=page_tags))
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/ len(page_tags)
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if page_tags
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else models.Value(1)
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)
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similar_posts = similar_posts.annotate(
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similarity=(models.F("tag_similarity") * 2)
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* (models.F("title_similarity") * 10)
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* (models.F("subtitle_similarity"))
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).order_by("-similarity")[:3]
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return similar_posts
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class BlogPostTagListPage(BaseListingPage):
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max_count = 1
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parent_page_types = [BlogPostListPage]
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subpage_types = ["blog.BlogPostTagPage"]
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@cached_property
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def table_of_contents(self) -> list[TocEntry]:
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return [
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TocEntry(page.title, page.slug, 0, []) for page in self.get_listing_pages()
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]
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class BlogPostTagPage(BaseListingPage):
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subpage_types: list[Any] = []
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parent_page_types = [BlogPostTagListPage]
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@cached_property
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def html_title(self) -> str:
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return f"Pages tagged with '{super().html_title}'"
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def get_listing_pages(self) -> models.QuerySet:
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blog_list_page = BlogPostListPage.objects.get()
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return blog_list_page.get_listing_pages().filter(tags=self)
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@property
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def feed_class(self) -> Type[ContentPageFeed]:
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from .views import BlogPostPageFeed
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return BlogPostPageFeed
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class BlogPostCollectionListPage(BaseListingPage):
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subpage_types: list[Any] = []
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parent_page_types = [BlogPostListPage]
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max_count = 1
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@cached_property
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def table_of_contents(self) -> list[TocEntry]:
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return [
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TocEntry(page.title, page.slug, 0, []) for page in self.get_listing_pages()
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]
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def get_listing_pages(self) -> models.QuerySet:
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blog_list_page = BlogPostListPage.objects.get()
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return BlogPostCollectionPage.objects.child_of(blog_list_page).live().public()
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class BlogPostCollectionPage(BaseListingPage):
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parent_page_types = [BlogPostListPage]
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subpage_types = [BlogPostPage]
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def get_listing_pages(self) -> models.QuerySet:
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return (
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BlogPostPage.objects.child_of(self)
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.live()
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.public()
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.order_by("-date", "title")
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)
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@property
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def feed_class(self) -> Type[ContentPageFeed]:
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from .views import BlogPostPageFeed
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return BlogPostPageFeed
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