Add basic view listing activities from a given hashtag

bookwyrm/views/__init__.py

@@ -130,6 +130,7 @@ from .group import (
     accept_membership,
     reject_membership,
 )
+from .hashtag import Hashtag
 from .inbox import Inbox
 from .interaction import Favorite, Unfavorite, Boost, Unboost
 from .isbn import Isbn

bookwyrm/views/hashtag.py

@@ -0,0 +1,54 @@
+""" listing statuses for a given hashtag """
+from django.core.paginator import Paginator
+from django.db.models import Q
+from django.views import View
+from django.shortcuts import get_object_or_404
+from django.template.response import TemplateResponse
+
+from bookwyrm import models
+from bookwyrm.settings import PAGE_LENGTH
+from bookwyrm.views.helpers import maybe_redirect_local_path
+
+
+# pylint: disable= no-self-use
+class Hashtag(View):
+    """listing statuses for a given hashtag"""
+
+    # pylint: disable=unused-argument
+    def get(self, request, hashtag_id, slug=None):
+        """show hashtag with related statuses"""
+        hashtag = get_object_or_404(models.Hashtag, id=hashtag_id)
+
+        if redirect_local_path := maybe_redirect_local_path(request, hashtag):
+            return redirect_local_path
+
+        activities = (
+            models.Status.privacy_filter(
+                request.user,
+            )
+            .filter(
+                Q(mention_hashtags=hashtag),
+            )
+            .exclude(
+                privacy__in=["direct", "unlisted"],
+            )
+            .select_related(
+                "user",
+                "reply_parent",
+                "review__book",
+                "comment__book",
+                "quotation__book",
+            )
+            .prefetch_related(
+                "mention_books",
+                "mention_users",
+                "attachments",
+            )
+        )
+        paginated = Paginator(activities, PAGE_LENGTH)
+
+        data = {
+            "hashtag": hashtag.name,
+            "activities": paginated.get_page(request.GET.get("page", 1)),
+        }
+        return TemplateResponse(request, "hashtag.html", data)