Add post title to comments view #948

server/lemmy_db/src/comment_view.rs

@@ -9,6 +9,7 @@ table! {
     id -> Int4,
     creator_id -> Int4,
     post_id -> Int4,
+    post_name -> Varchar,
     parent_id -> Nullable<Int4>,
     content -> Text,
     removed -> Bool,
@@ -45,6 +46,7 @@ table! {
     id -> Int4,
     creator_id -> Int4,
     post_id -> Int4,
+    post_name -> Varchar,
     parent_id -> Nullable<Int4>,
     content -> Text,
     removed -> Bool,
@@ -84,6 +86,7 @@ pub struct CommentView {
   pub id: i32,
   pub creator_id: i32,
   pub post_id: i32,
+  pub post_name: String,
   pub parent_id: Option<i32>,
   pub content: String,
   pub removed: bool,
@@ -576,6 +579,7 @@ mod tests {
       content: "A test comment 32".into(),
       creator_id: inserted_user.id,
       post_id: inserted_post.id,
+      post_name: inserted_post.name.to_owned(),
       community_id: inserted_community.id,
       community_name: inserted_community.name.to_owned(),
       parent_id: None,
@@ -610,6 +614,7 @@ mod tests {
       content: "A test comment 32".into(),
       creator_id: inserted_user.id,
       post_id: inserted_post.id,
+      post_name: inserted_post.name.to_owned(),
       community_id: inserted_community.id,
       community_name: inserted_community.name.to_owned(),
       parent_id: None,

server/lemmy_db/src/schema.rs

@@ -38,6 +38,7 @@ table! {
         id -> Int4,
         creator_id -> Nullable<Int4>,
         post_id -> Nullable<Int4>,
+        post_name -> Nullable<Varchar>,
         parent_id -> Nullable<Int4>,
         content -> Nullable<Text>,
         removed -> Nullable<Bool>,

server/migrations/2020-07-12-100442_add_post_title_to_comments_view/down.sql

@@ -0,0 +1,390 @@
+--drop view user_mention_view;
+--drop view reply_fast_view;
+drop view comment_fast_view;
+drop view comment_view;
+
+--drop view user_mention_fast_view;
+drop table comment_aggregates_fast;
+drop view comment_aggregates_view;
+
+create view comment_aggregates_view as
+select
+	ct.*,
+	-- community details
+	p.community_id,
+	c.actor_id as community_actor_id,
+	c."local" as community_local,
+	c."name" as community_name,
+	-- creator details
+	u.banned as banned,
+  coalesce(cb.id, 0)::bool as banned_from_community,
+	u.actor_id as creator_actor_id,
+	u.local as creator_local,
+	u.name as creator_name,
+  u.published as creator_published,
+	u.avatar as creator_avatar,
+	-- score details
+	coalesce(cl.total, 0) as score,
+	coalesce(cl.up, 0) as upvotes,
+	coalesce(cl.down, 0) as downvotes,
+	hot_rank(coalesce(cl.total, 0), ct.published) as hot_rank
+from comment ct
+left join post p on ct.post_id = p.id
+left join community c on p.community_id = c.id
+left join user_ u on ct.creator_id = u.id
+left join community_user_ban cb on ct.creator_id = cb.user_id and p.id = ct.post_id and p.community_id = cb.community_id
+left join (
+	select
+		l.comment_id as id,
+		sum(l.score) as total,
+		count(case when l.score = 1 then 1 else null end) as up,
+		count(case when l.score = -1 then 1 else null end) as down
+	from comment_like l
+	group by comment_id
+) as cl on cl.id = ct.id;
+
+create or replace view comment_view as (
+select
+	cav.*,
+  us.user_id as user_id,
+  us.my_vote as my_vote,
+  us.is_subbed::bool as subscribed,
+  us.is_saved::bool as saved
+from comment_aggregates_view cav
+cross join lateral (
+	select
+		u.id as user_id,
+		coalesce(cl.score, 0) as my_vote,
+    coalesce(cf.id, 0) as is_subbed,
+    coalesce(cs.id, 0) as is_saved
+	from user_ u
+	left join comment_like cl on u.id = cl.user_id and cav.id = cl.comment_id
+	left join comment_saved cs on u.id = cs.user_id and cs.comment_id = cav.id
+	left join community_follower cf on u.id = cf.user_id and cav.community_id = cf.community_id
+) as us
+
+union all
+
+select
+    cav.*,
+    null as user_id,
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from comment_aggregates_view cav
+);
+
+create table comment_aggregates_fast as select * from comment_aggregates_view;
+alter table comment_aggregates_fast add primary key (id);
+
+create view comment_fast_view as
+select
+	cav.*,
+  us.user_id as user_id,
+  us.my_vote as my_vote,
+  us.is_subbed::bool as subscribed,
+  us.is_saved::bool as saved
+from comment_aggregates_fast cav
+cross join lateral (
+	select
+		u.id as user_id,
+		coalesce(cl.score, 0) as my_vote,
+    coalesce(cf.id, 0) as is_subbed,
+    coalesce(cs.id, 0) as is_saved
+	from user_ u
+	left join comment_like cl on u.id = cl.user_id and cav.id = cl.comment_id
+	left join comment_saved cs on u.id = cs.user_id and cs.comment_id = cav.id
+	left join community_follower cf on u.id = cf.user_id and cav.community_id = cf.community_id
+) as us
+
+union all
+
+select
+    cav.*,
+    null as user_id,
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from comment_aggregates_fast cav;
+
+--create view user_mention_view as
+--select
+--    c.id,
+--    um.id as user_mention_id,
+--    c.creator_id,
+--    c.creator_actor_id,
+--    c.creator_local,
+--    c.post_id,
+--    c.parent_id,
+--    c.content,
+--    c.removed,
+--    um.read,
+--    c.published,
+--    c.updated,
+--    c.deleted,
+--    c.community_id,
+--    c.community_actor_id,
+--    c.community_local,
+--    c.community_name,
+--    c.banned,
+--    c.banned_from_community,
+--    c.creator_name,
+--    c.creator_avatar,
+--    c.score,
+--    c.upvotes,
+--    c.downvotes,
+--    c.hot_rank,
+--    c.user_id,
+--    c.my_vote,
+--    c.saved,
+--    um.recipient_id,
+--    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+--    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+--from user_mention um, comment_view c
+--where um.comment_id = c.id;
+
+--create view user_mention_fast_view as
+--select
+--    ac.id,
+--    um.id as user_mention_id,
+--    ac.creator_id,
+--    ac.creator_actor_id,
+--    ac.creator_local,
+--    ac.post_id,
+--    ac.parent_id,
+--    ac.content,
+--    ac.removed,
+--    um.read,
+--    ac.published,
+--    ac.updated,
+--    ac.deleted,
+--    ac.community_id,
+--    ac.community_actor_id,
+--    ac.community_local,
+--    ac.community_name,
+--    ac.banned,
+--    ac.banned_from_community,
+--    ac.creator_name,
+--    ac.creator_avatar,
+--    ac.score,
+--    ac.upvotes,
+--    ac.downvotes,
+--    ac.hot_rank,
+--    u.id as user_id,
+--    coalesce(cl.score, 0) as my_vote,
+--    (select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved,
+--    um.recipient_id,
+--    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+--    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+--from user_ u
+--cross join (
+--  select
+--  ca.*
+--  from comment_aggregates_fast ca
+--) ac
+--left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+--left join user_mention um on um.comment_id = ac.id
+--
+--union all
+--
+--select
+--    ac.id,
+--    um.id as user_mention_id,
+--    ac.creator_id,
+--    ac.creator_actor_id,
+--    ac.creator_local,
+--    ac.post_id,
+--    ac.parent_id,
+--    ac.content,
+--    ac.removed,
+--    um.read,
+--    ac.published,
+--    ac.updated,
+--    ac.deleted,
+--    ac.community_id,
+--    ac.community_actor_id,
+--    ac.community_local,
+--    ac.community_name,
+--    ac.banned,
+--    ac.banned_from_community,
+--    ac.creator_name,
+--    ac.creator_avatar,
+--    ac.score,
+--    ac.upvotes,
+--    ac.downvotes,
+--    ac.hot_rank,
+--    null as user_id,
+--    null as my_vote,
+--    null as saved,
+--    um.recipient_id,
+--    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+--    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+--from comment_aggregates_fast ac
+--left join user_mention um on um.comment_id = ac.id
+--;
+
+-- Do the reply_view referencing the comment_fast_view
+--create view reply_fast_view as
+--with closereply as (
+--    select
+--    c2.id,
+--    c2.creator_id as sender_id,
+--    c.creator_id as recipient_id
+--    from comment c
+--    inner join comment c2 on c.id = c2.parent_id
+--    where c2.creator_id != c.creator_id
+--    -- Do union where post is null
+--    union
+--    select
+--    c.id,
+--    c.creator_id as sender_id,
+--    p.creator_id as recipient_id
+--    from comment c, post p
+--    where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
+--)
+--select cv.*,
+--closereply.recipient_id
+--from comment_fast_view cv, closereply
+--where closereply.id = cv.id
+--;
+--
+---- add creator_published to the post view
+--drop view post_fast_view;
+--drop table post_aggregates_fast;
+--drop view post_view;
+--drop view post_aggregates_view;
+--
+--create view post_aggregates_view as
+--select
+--	p.*,
+--	-- creator details
+--	u.actor_id as creator_actor_id,
+--	u."local" as creator_local,
+--	u."name" as creator_name,
+--  u.published as creator_published,
+--	u.avatar as creator_avatar,
+--  u.banned as banned,
+--  cb.id::bool as banned_from_community,
+--	-- community details
+--	c.actor_id as community_actor_id,
+--	c."local" as community_local,
+--	c."name" as community_name,
+--	c.removed as community_removed,
+--	c.deleted as community_deleted,
+--	c.nsfw as community_nsfw,
+--	-- post score data/comment count
+--	coalesce(ct.comments, 0) as number_of_comments,
+--	coalesce(pl.score, 0) as score,
+--	coalesce(pl.upvotes, 0) as upvotes,
+--	coalesce(pl.downvotes, 0) as downvotes,
+--	hot_rank(
+--		coalesce(pl.score , 0), (
+--			case
+--				when (p.published < ('now'::timestamp - '1 month'::interval))
+--				then p.published
+--				else greatest(ct.recent_comment_time, p.published)
+--			end
+--		)
+--	) as hot_rank,
+--	(
+--		case
+--			when (p.published < ('now'::timestamp - '1 month'::interval))
+--			then p.published
+--			else greatest(ct.recent_comment_time, p.published)
+--		end
+--	) as newest_activity_time
+--from post p
+--left join user_ u on p.creator_id = u.id
+--left join community_user_ban cb on p.creator_id = cb.user_id and p.community_id = cb.community_id
+--left join community c on p.community_id = c.id
+--left join (
+--	select
+--		post_id,
+--		count(*) as comments,
+--		max(published) as recent_comment_time
+--	from comment
+--	group by post_id
+--) ct on ct.post_id = p.id
+--left join (
+--	select
+--		post_id,
+--		sum(score) as score,
+--		sum(score) filter (where score = 1) as upvotes,
+--		-sum(score) filter (where score = -1) as downvotes
+--	from post_like
+--	group by post_id
+--) pl on pl.post_id = p.id
+--order by p.id;
+--
+--create view post_view as
+--select
+--	pav.*,
+--	us.id as user_id,
+--	us.user_vote as my_vote,
+--	us.is_subbed::bool as subscribed,
+--	us.is_read::bool as read,
+--	us.is_saved::bool as saved
+--from post_aggregates_view pav
+--cross join lateral (
+--	select
+--		u.id,
+--		coalesce(cf.community_id, 0) as is_subbed,
+--		coalesce(pr.post_id, 0) as is_read,
+--		coalesce(ps.post_id, 0) as is_saved,
+--		coalesce(pl.score, 0) as user_vote
+--	from user_ u
+--	left join community_user_ban cb on u.id = cb.user_id and cb.community_id = pav.community_id
+--	left join community_follower cf on u.id = cf.user_id and cf.community_id = pav.community_id
+--	left join post_read pr on u.id = pr.user_id and pr.post_id = pav.id
+--	left join post_saved ps on u.id = ps.user_id and ps.post_id = pav.id
+--	left join post_like pl on u.id = pl.user_id and pav.id = pl.post_id
+--) as us
+--
+--union all
+--
+--select
+--pav.*,
+--null as user_id,
+--null as my_vote,
+--null as subscribed,
+--null as read,
+--null as saved
+--from post_aggregates_view pav;
+--
+--create table post_aggregates_fast as select * from post_aggregates_view;
+--alter table post_aggregates_fast add primary key (id);
+--
+--create view post_fast_view as
+--select
+--	pav.*,
+--	us.id as user_id,
+--	us.user_vote as my_vote,
+--	us.is_subbed::bool as subscribed,
+--	us.is_read::bool as read,
+--	us.is_saved::bool as saved
+--from post_aggregates_fast pav
+--cross join lateral (
+--	select
+--		u.id,
+--		coalesce(cf.community_id, 0) as is_subbed,
+--		coalesce(pr.post_id, 0) as is_read,
+--		coalesce(ps.post_id, 0) as is_saved,
+--		coalesce(pl.score, 0) as user_vote
+--	from user_ u
+--	left join community_user_ban cb on u.id = cb.user_id and cb.community_id = pav.community_id
+--	left join community_follower cf on u.id = cf.user_id and cf.community_id = pav.community_id
+--	left join post_read pr on u.id = pr.user_id and pr.post_id = pav.id
+--	left join post_saved ps on u.id = ps.user_id and ps.post_id = pav.id
+--	left join post_like pl on u.id = pl.user_id and pav.id = pl.post_id
+--) as us
+--
+--union all
+--
+--select
+--pav.*,
+--null as user_id,
+--null as my_vote,
+--null as subscribed,
+--null as read,
+--null as saved
+--from post_aggregates_fast pav;

server/migrations/2020-07-12-100442_add_post_title_to_comments_view/up.sql

@@ -0,0 +1,391 @@
+drop view user_mention_view;
+drop view reply_fast_view;
+drop view comment_fast_view;
+drop view comment_view;
+
+drop view user_mention_fast_view;
+drop table comment_aggregates_fast;
+drop view comment_aggregates_view;
+
+create view comment_aggregates_view as
+select
+	ct.*,
+	-- community details
+	p.community_id,
+	p."name" as post_name,
+	c.actor_id as community_actor_id,
+	c."local" as community_local,
+	c."name" as community_name,
+	-- creator details
+	u.banned as banned,
+  coalesce(cb.id, 0)::bool as banned_from_community,
+	u.actor_id as creator_actor_id,
+	u.local as creator_local,
+	u.name as creator_name,
+  u.published as creator_published,
+	u.avatar as creator_avatar,
+	-- score details
+	coalesce(cl.total, 0) as score,
+	coalesce(cl.up, 0) as upvotes,
+	coalesce(cl.down, 0) as downvotes,
+	hot_rank(coalesce(cl.total, 0), ct.published) as hot_rank
+from comment ct
+left join post p on ct.post_id = p.id
+left join community c on p.community_id = c.id
+left join user_ u on ct.creator_id = u.id
+left join community_user_ban cb on ct.creator_id = cb.user_id and p.id = ct.post_id and p.community_id = cb.community_id
+left join (
+	select
+		l.comment_id as id,
+		sum(l.score) as total,
+		count(case when l.score = 1 then 1 else null end) as up,
+		count(case when l.score = -1 then 1 else null end) as down
+	from comment_like l
+	group by comment_id
+) as cl on cl.id = ct.id;
+
+create or replace view comment_view as (
+select
+	cav.*,
+  us.user_id as user_id,
+  us.my_vote as my_vote,
+  us.is_subbed::bool as subscribed,
+  us.is_saved::bool as saved
+from comment_aggregates_view cav
+cross join lateral (
+	select
+		u.id as user_id,
+		coalesce(cl.score, 0) as my_vote,
+    coalesce(cf.id, 0) as is_subbed,
+    coalesce(cs.id, 0) as is_saved
+	from user_ u
+	left join comment_like cl on u.id = cl.user_id and cav.id = cl.comment_id
+	left join comment_saved cs on u.id = cs.user_id and cs.comment_id = cav.id
+	left join community_follower cf on u.id = cf.user_id and cav.community_id = cf.community_id
+) as us
+
+union all
+
+select
+    cav.*,
+    null as user_id,
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from comment_aggregates_view cav
+);
+
+create table comment_aggregates_fast as select * from comment_aggregates_view;
+alter table comment_aggregates_fast add primary key (id);
+
+create view comment_fast_view as
+select
+	cav.*,
+  us.user_id as user_id,
+  us.my_vote as my_vote,
+  us.is_subbed::bool as subscribed,
+  us.is_saved::bool as saved
+from comment_aggregates_fast cav
+cross join lateral (
+	select
+		u.id as user_id,
+		coalesce(cl.score, 0) as my_vote,
+    coalesce(cf.id, 0) as is_subbed,
+    coalesce(cs.id, 0) as is_saved
+	from user_ u
+	left join comment_like cl on u.id = cl.user_id and cav.id = cl.comment_id
+	left join comment_saved cs on u.id = cs.user_id and cs.comment_id = cav.id
+	left join community_follower cf on u.id = cf.user_id and cav.community_id = cf.community_id
+) as us
+
+union all
+
+select
+    cav.*,
+    null as user_id,
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from comment_aggregates_fast cav;
+
+create view user_mention_view as
+select
+    c.id,
+    um.id as user_mention_id,
+    c.creator_id,
+    c.creator_actor_id,
+    c.creator_local,
+    c.post_id,
+    c.parent_id,
+    c.content,
+    c.removed,
+    um.read,
+    c.published,
+    c.updated,
+    c.deleted,
+    c.community_id,
+    c.community_actor_id,
+    c.community_local,
+    c.community_name,
+    c.banned,
+    c.banned_from_community,
+    c.creator_name,
+    c.creator_avatar,
+    c.score,
+    c.upvotes,
+    c.downvotes,
+    c.hot_rank,
+    c.user_id,
+    c.my_vote,
+    c.saved,
+    um.recipient_id,
+    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+from user_mention um, comment_view c
+where um.comment_id = c.id;
+
+create view user_mention_fast_view as
+select
+    ac.id,
+    um.id as user_mention_id,
+    ac.creator_id,
+    ac.creator_actor_id,
+    ac.creator_local,
+    ac.post_id,
+    ac.parent_id,
+    ac.content,
+    ac.removed,
+    um.read,
+    ac.published,
+    ac.updated,
+    ac.deleted,
+    ac.community_id,
+    ac.community_actor_id,
+    ac.community_local,
+    ac.community_name,
+    ac.banned,
+    ac.banned_from_community,
+    ac.creator_name,
+    ac.creator_avatar,
+    ac.score,
+    ac.upvotes,
+    ac.downvotes,
+    ac.hot_rank,
+    u.id as user_id,
+    coalesce(cl.score, 0) as my_vote,
+    (select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved,
+    um.recipient_id,
+    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+from user_ u
+cross join (
+  select
+  ca.*
+  from comment_aggregates_fast ca
+) ac
+left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+left join user_mention um on um.comment_id = ac.id
+
+union all
+
+select
+    ac.id,
+    um.id as user_mention_id,
+    ac.creator_id,
+    ac.creator_actor_id,
+    ac.creator_local,
+    ac.post_id,
+    ac.parent_id,
+    ac.content,
+    ac.removed,
+    um.read,
+    ac.published,
+    ac.updated,
+    ac.deleted,
+    ac.community_id,
+    ac.community_actor_id,
+    ac.community_local,
+    ac.community_name,
+    ac.banned,
+    ac.banned_from_community,
+    ac.creator_name,
+    ac.creator_avatar,
+    ac.score,
+    ac.upvotes,
+    ac.downvotes,
+    ac.hot_rank,
+    null as user_id,
+    null as my_vote,
+    null as saved,
+    um.recipient_id,
+    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+from comment_aggregates_fast ac
+left join user_mention um on um.comment_id = ac.id
+;
+
+-- Do the reply_view referencing the comment_fast_view
+create view reply_fast_view as
+with closereply as (
+    select
+    c2.id,
+    c2.creator_id as sender_id,
+    c.creator_id as recipient_id
+    from comment c
+    inner join comment c2 on c.id = c2.parent_id
+    where c2.creator_id != c.creator_id
+    -- Do union where post is null
+    union
+    select
+    c.id,
+    c.creator_id as sender_id,
+    p.creator_id as recipient_id
+    from comment c, post p
+    where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
+)
+select cv.*,
+closereply.recipient_id
+from comment_fast_view cv, closereply
+where closereply.id = cv.id
+;
+
+-- add creator_published to the post view
+drop view post_fast_view;
+drop table post_aggregates_fast;
+drop view post_view;
+drop view post_aggregates_view;
+
+create view post_aggregates_view as
+select
+	p.*,
+	-- creator details
+	u.actor_id as creator_actor_id,
+	u."local" as creator_local,
+	u."name" as creator_name,
+  u.published as creator_published,
+	u.avatar as creator_avatar,
+  u.banned as banned,
+  cb.id::bool as banned_from_community,
+	-- community details
+	c.actor_id as community_actor_id,
+	c."local" as community_local,
+	c."name" as community_name,
+	c.removed as community_removed,
+	c.deleted as community_deleted,
+	c.nsfw as community_nsfw,
+	-- post score data/comment count
+	coalesce(ct.comments, 0) as number_of_comments,
+	coalesce(pl.score, 0) as score,
+	coalesce(pl.upvotes, 0) as upvotes,
+	coalesce(pl.downvotes, 0) as downvotes,
+	hot_rank(
+		coalesce(pl.score , 0), (
+			case
+				when (p.published < ('now'::timestamp - '1 month'::interval))
+				then p.published
+				else greatest(ct.recent_comment_time, p.published)
+			end
+		)
+	) as hot_rank,
+	(
+		case
+			when (p.published < ('now'::timestamp - '1 month'::interval))
+			then p.published
+			else greatest(ct.recent_comment_time, p.published)
+		end
+	) as newest_activity_time
+from post p
+left join user_ u on p.creator_id = u.id
+left join community_user_ban cb on p.creator_id = cb.user_id and p.community_id = cb.community_id
+left join community c on p.community_id = c.id
+left join (
+	select
+		post_id,
+		count(*) as comments,
+		max(published) as recent_comment_time
+	from comment
+	group by post_id
+) ct on ct.post_id = p.id
+left join (
+	select
+		post_id,
+		sum(score) as score,
+		sum(score) filter (where score = 1) as upvotes,
+		-sum(score) filter (where score = -1) as downvotes
+	from post_like
+	group by post_id
+) pl on pl.post_id = p.id
+order by p.id;
+
+create view post_view as
+select
+	pav.*,
+	us.id as user_id,
+	us.user_vote as my_vote,
+	us.is_subbed::bool as subscribed,
+	us.is_read::bool as read,
+	us.is_saved::bool as saved
+from post_aggregates_view pav
+cross join lateral (
+	select
+		u.id,
+		coalesce(cf.community_id, 0) as is_subbed,
+		coalesce(pr.post_id, 0) as is_read,
+		coalesce(ps.post_id, 0) as is_saved,
+		coalesce(pl.score, 0) as user_vote
+	from user_ u
+	left join community_user_ban cb on u.id = cb.user_id and cb.community_id = pav.community_id
+	left join community_follower cf on u.id = cf.user_id and cf.community_id = pav.community_id
+	left join post_read pr on u.id = pr.user_id and pr.post_id = pav.id
+	left join post_saved ps on u.id = ps.user_id and ps.post_id = pav.id
+	left join post_like pl on u.id = pl.user_id and pav.id = pl.post_id
+) as us
+
+union all
+
+select
+pav.*,
+null as user_id,
+null as my_vote,
+null as subscribed,
+null as read,
+null as saved
+from post_aggregates_view pav;
+
+create table post_aggregates_fast as select * from post_aggregates_view;
+alter table post_aggregates_fast add primary key (id);
+
+create view post_fast_view as
+select
+	pav.*,
+	us.id as user_id,
+	us.user_vote as my_vote,
+	us.is_subbed::bool as subscribed,
+	us.is_read::bool as read,
+	us.is_saved::bool as saved
+from post_aggregates_fast pav
+cross join lateral (
+	select
+		u.id,
+		coalesce(cf.community_id, 0) as is_subbed,
+		coalesce(pr.post_id, 0) as is_read,
+		coalesce(ps.post_id, 0) as is_saved,
+		coalesce(pl.score, 0) as user_vote
+	from user_ u
+	left join community_user_ban cb on u.id = cb.user_id and cb.community_id = pav.community_id
+	left join community_follower cf on u.id = cf.user_id and cf.community_id = pav.community_id
+	left join post_read pr on u.id = pr.user_id and pr.post_id = pav.id
+	left join post_saved ps on u.id = ps.user_id and ps.post_id = pav.id
+	left join post_like pl on u.id = pl.user_id and pav.id = pl.post_id
+) as us
+
+union all
+
+select
+pav.*,
+null as user_id,
+null as my_vote,
+null as subscribed,
+null as read,
+null as saved
+from post_aggregates_fast pav;

ui/src/components/comment-node.tsx

@@ -222,6 +222,15 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
                 <MomentTime data={node.comment} />
               </span>
             </div>
+            {this.props.showCommunity && !this.state.collapsed && (
+              <>
+                <div class="md-div text-muted small">
+                  <Link class="mr-2" to={`/post/${node.comment.post_id}`}>
+                    {node.comment.post_name}
+                  </Link>
+                </div>
+              </>
+            )}
             {/* end of user row */}
             {this.state.showEdit && (
               <CommentForm

ui/src/interfaces.ts

@@ -211,6 +211,7 @@ export interface Comment {
   local: boolean;
   creator_id: number;
   post_id: number;
+  post_name: string;
   parent_id?: number;
   content: string;
   removed: boolean;