What is the context of this change?
Before 7c6a8f1c74, we were using
`preload(:tags)` on the topics relation but that was accidentally
removed in the refactor. This was discovered and fixed in
5bec894a8c but insteadl of using
`preload(:tags)` we ended up using `includes(:tags)`. The problem here
is that `includes(:tags)` can either result in `preload(:tags)` or
`eager_load(:tags)` but for some reason ActiveRecord is deciding to
`eager_load(:tags)` resulting in a joins to the `topic_tags` and `tags`
table which is not necessarily and leads to more inefficient queries.
When `includes(:tags)` is used, listing the latest topics ended up
generating the following sample queries to fetch the list of topics to display.
```
SELECT DISTINCT "topics"."pinned_at" AS alias_0, "topics"."id" FROM "topics" LEFT OUTER JOIN "categories" ON "categories"."id" = "topics"."category_id" LEFT OUTER JOIN "topic_tags" ON "topic_tags"."topic_id" = "topics"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "topic_tags"."tag_id" LEFT OUTER JOIN topic_users AS tu ON (topics.id = tu.topic_id AND tu.user_id = 29) LEFT JOIN category_users ON category_users.category_id = topics.category_id AND category_users.user_id = 29 WHERE "topics"."deleted_at" IS NULL AND (topics.archetype <> 'private_message') AND (COALESCE(categories.topic_id, 0) <> topics.id) AND (COALESCE(tu.notification_level,1) > 0) AND (topics.category_id = -1
OR
(COALESCE(category_users.notification_level, 1) <> 0 AND (topics.category_id IS NULL OR topics.category_id NOT IN(-1)))
OR tu.notification_level > 1) AND (pinned_globally AND pinned_at IS NOT NULL AND (topics.pinned_at > tu.cleared_pinned_at OR tu.cleared_pinned_at IS NULL)) ORDER BY "topics"."pinned_at" DESC LIMIT 30
SELECT "topics"."id" AS t0_r0, "topics"."title" AS t0_r1, "topics"."last_posted_at" AS t0_r2, "topics"."created_at" AS t0_r3, "topics"."updated_at" AS t0_r4, "topics"."views" AS t0_r5, "topics"."posts_count" AS t0_r6, "topics"."user_id" AS t0_r7, "topics"."last_post_user_id" AS t0_r8, "topics"."reply_count" AS t0_r9, "topics"."featured_user1_id" AS t0_r10, "topics"."featured_user2_id" AS t0_r11, "topics"."featured_user3_id" AS t0_r12, "topics"."deleted_at" AS t0_r13, "topics"."highest_post_number" AS t0_r14, "topics"."like_count" AS t0_r15, "topics"."incoming_link_count" AS t0_r16, "topics"."category_id" AS t0_r17, "topics"."visible" AS t0_r18, "topics"."moderator_posts_count" AS t0_r19, "topics"."closed" AS t0_r20, "topics"."archived" AS t0_r21, "topics"."bumped_at" AS t0_r22, "topics"."has_summary" AS t0_r23, "topics"."archetype" AS t0_r24, "topics"."featured_user4_id" AS t0_r25, "topics"."notify_moderators_count" AS t0_r26, "topics"."spam_count" AS t0_r27, "topics"."pinned_at" AS t0_r28, "topics"."score" AS t0_r29, "topics"."percent_rank" AS t0_r30, "topics"."subtype" AS t0_r31, "topics"."slug" AS t0_r32, "topics"."deleted_by_id" AS t0_r33, "topics"."participant_count" AS t0_r34, "topics"."word_count" AS t0_r35, "topics"."excerpt" AS t0_r36, "topics"."pinned_globally" AS t0_r37, "topics"."pinned_until" AS t0_r38, "topics"."fancy_title" AS t0_r39, "topics"."highest_staff_post_number" AS t0_r40, "topics"."featured_link" AS t0_r41, "topics"."reviewable_score" AS t0_r42, "topics"."image_upload_id" AS t0_r43, "topics"."slow_mode_seconds" AS t0_r44, "topics"."bannered_until" AS t0_r45, "topics"."external_id" AS t0_r46, "categories"."id" AS t1_r0, "categories"."name" AS t1_r1, "categories"."color" AS t1_r2, "categories"."topic_id" AS t1_r3, "categories"."topic_count" AS t1_r4, "categories"."created_at" AS t1_r5, "categories"."updated_at" AS t1_r6, "categories"."user_id" AS t1_r7, "categories"."topics_year" AS t1_r8, "categories"."topics_month" AS t1_r9, "categories"."topics_week" AS t1_r10, "categories"."slug" AS t1_r11, "categories"."description" AS t1_r12, "categories"."text_color" AS t1_r13, "categories"."read_restricted" AS t1_r14, "categories"."auto_close_hours" AS t1_r15, "categories"."post_count" AS t1_r16, "categories"."latest_post_id" AS t1_r17, "categories"."latest_topic_id" AS t1_r18, "categories"."position" AS t1_r19, "categories"."parent_category_id" AS t1_r20, "categories"."posts_year" AS t1_r21, "categories"."posts_month" AS t1_r22, "categories"."posts_week" AS t1_r23, "categories"."email_in" AS t1_r24, "categories"."email_in_allow_strangers" AS t1_r25, "categories"."topics_day" AS t1_r26, "categories"."posts_day" AS t1_r27, "categories"."allow_badges" AS t1_r28, "categories"."name_lower" AS t1_r29, "categories"."auto_close_based_on_last_post" AS t1_r30, "categories"."topic_template" AS t1_r31, "categories"."contains_messages" AS t1_r32, "categories"."sort_order" AS t1_r33, "categories"."sort_ascending" AS t1_r34, "categories"."uploaded_logo_id" AS t1_r35, "categories"."uploaded_background_id" AS t1_r36, "categories"."topic_featured_link_allowed" AS t1_r37, "categories"."all_topics_wiki" AS t1_r38, "categories"."show_subcategory_list" AS t1_r39, "categories"."num_featured_topics" AS t1_r40, "categories"."default_view" AS t1_r41, "categories"."subcategory_list_style" AS t1_r42, "categories"."default_top_period" AS t1_r43, "categories"."mailinglist_mirror" AS t1_r44, "categories"."minimum_required_tags" AS t1_r45, "categories"."navigate_to_first_post_after_read" AS t1_r46, "categories"."search_priority" AS t1_r47, "categories"."allow_global_tags" AS t1_r48, "categories"."reviewable_by_group_id" AS t1_r49, "categories"."read_only_banner" AS t1_r50, "categories"."default_list_filter" AS t1_r51, "categories"."allow_unlimited_owner_edits_on_first_post" AS t1_r52, "categories"."default_slow_mode_seconds" AS t1_r53, "categories"."uploaded_logo_dark_id" AS t1_r54, "tags"."id" AS t2_r0, "tags"."name" AS t2_r1, "tags"."created_at" AS t2_r2, "tags"."updated_at" AS t2_r3, "tags"."pm_topic_count" AS t2_r4, "tags"."target_tag_id" AS t2_r5, "tags"."description" AS t2_r6, "tags"."public_topic_count" AS t2_r7, "tags"."staff_topic_count" AS t2_r8 FROM "topics" LEFT OUTER JOIN "categories" ON "categories"."id" = "topics"."category_id" LEFT OUTER JOIN "topic_tags" ON "topic_tags"."topic_id" = "topics"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "topic_tags"."tag_id" LEFT OUTER JOIN topic_users AS tu ON (topics.id = tu.topic_id AND tu.user_id = 29) LEFT JOIN category_users ON category_users.category_id = topics.category_id AND category_users.user_id = 29 WHERE "topics"."deleted_at" IS NULL AND (topics.archetype <> 'private_message') AND (COALESCE(categories.topic_id, 0) <> topics.id) AND (COALESCE(tu.notification_level,1) > 0) AND (topics.category_id = -1
OR
(COALESCE(category_users.notification_level, 1) <> 0 AND (topics.category_id IS NULL OR topics.category_id NOT IN(-1)))
OR tu.notification_level > 1) AND (pinned_globally AND pinned_at IS NOT NULL AND (topics.pinned_at > tu.cleared_pinned_at OR tu.cleared_pinned_at IS NULL)) AND "topics"."id" = 7 ORDER BY "topics"."pinned_at" DESC
SELECT DISTINCT topics.bumped_at AS alias_0, "topics"."id" FROM "topics" LEFT OUTER JOIN "categories" ON "categories"."id" = "topics"."category_id" LEFT OUTER JOIN "topic_tags" ON "topic_tags"."topic_id" = "topics"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "topic_tags"."tag_id" LEFT OUTER JOIN topic_users AS tu ON (topics.id = tu.topic_id AND tu.user_id = 29) LEFT JOIN category_users ON category_users.category_id = topics.category_id AND category_users.user_id = 29 WHERE "topics"."deleted_at" IS NULL AND (topics.archetype <> 'private_message') AND (COALESCE(categories.topic_id, 0) <> topics.id) AND (COALESCE(tu.notification_level,1) > 0) AND (topics.category_id = -1
OR
(COALESCE(category_users.notification_level, 1) <> 0 AND (topics.category_id IS NULL OR topics.category_id NOT IN(-1)))
OR tu.notification_level > 1) AND (NOT ( pinned_globally AND pinned_at IS NOT NULL AND (topics.pinned_at > tu.cleared_pinned_at OR tu.cleared_pinned_at IS NULL) )) ORDER BY topics.bumped_at DESC LIMIT 30
SELECT "topics"."id" AS t0_r0, "topics"."title" AS t0_r1, "topics"."last_posted_at" AS t0_r2, "topics"."created_at" AS t0_r3, "topics"."updated_at" AS t0_r4, "topics"."views" AS t0_r5, "topics"."posts_count" AS t0_r6, "topics"."user_id" AS t0_r7, "topics"."last_post_user_id" AS t0_r8, "topics"."reply_count" AS t0_r9, "topics"."featured_user1_id" AS t0_r10, "topics"."featured_user2_id" AS t0_r11, "topics"."featured_user3_id" AS t0_r12, "topics"."deleted_at" AS t0_r13, "topics"."highest_post_number" AS t0_r14, "topics"."like_count" AS t0_r15, "topics"."incoming_link_count" AS t0_r16, "topics"."category_id" AS t0_r17, "topics"."visible" AS t0_r18, "topics"."moderator_posts_count" AS t0_r19, "topics"."closed" AS t0_r20, "topics"."archived" AS t0_r21, "topics"."bumped_at" AS t0_r22, "topics"."has_summary" AS t0_r23, "topics"."archetype" AS t0_r24, "topics"."featured_user4_id" AS t0_r25, "topics"."notify_moderators_count" AS t0_r26, "topics"."spam_count" AS t0_r27, "topics"."pinned_at" AS t0_r28, "topics"."score" AS t0_r29, "topics"."percent_rank" AS t0_r30, "topics"."subtype" AS t0_r31, "topics"."slug" AS t0_r32, "topics"."deleted_by_id" AS t0_r33, "topics"."participant_count" AS t0_r34, "topics"."word_count" AS t0_r35, "topics"."excerpt" AS t0_r36, "topics"."pinned_globally" AS t0_r37, "topics"."pinned_until" AS t0_r38, "topics"."fancy_title" AS t0_r39, "topics"."highest_staff_post_number" AS t0_r40, "topics"."featured_link" AS t0_r41, "topics"."reviewable_score" AS t0_r42, "topics"."image_upload_id" AS t0_r43, "topics"."slow_mode_seconds" AS t0_r44, "topics"."bannered_until" AS t0_r45, "topics"."external_id" AS t0_r46, "categories"."id" AS t1_r0, "categories"."name" AS t1_r1, "categories"."color" AS t1_r2, "categories"."topic_id" AS t1_r3, "categories"."topic_count" AS t1_r4, "categories"."created_at" AS t1_r5, "categories"."updated_at" AS t1_r6, "categories"."user_id" AS t1_r7, "categories"."topics_year" AS t1_r8, "categories"."topics_month" AS t1_r9, "categories"."topics_week" AS t1_r10, "categories"."slug" AS t1_r11, "categories"."description" AS t1_r12, "categories"."text_color" AS t1_r13, "categories"."read_restricted" AS t1_r14, "categories"."auto_close_hours" AS t1_r15, "categories"."post_count" AS t1_r16, "categories"."latest_post_id" AS t1_r17, "categories"."latest_topic_id" AS t1_r18, "categories"."position" AS t1_r19, "categories"."parent_category_id" AS t1_r20, "categories"."posts_year" AS t1_r21, "categories"."posts_month" AS t1_r22, "categories"."posts_week" AS t1_r23, "categories"."email_in" AS t1_r24, "categories"."email_in_allow_strangers" AS t1_r25, "categories"."topics_day" AS t1_r26, "categories"."posts_day" AS t1_r27, "categories"."allow_badges" AS t1_r28, "categories"."name_lower" AS t1_r29, "categories"."auto_close_based_on_last_post" AS t1_r30, "categories"."topic_template" AS t1_r31, "categories"."contains_messages" AS t1_r32, "categories"."sort_order" AS t1_r33, "categories"."sort_ascending" AS t1_r34, "categories"."uploaded_logo_id" AS t1_r35, "categories"."uploaded_background_id" AS t1_r36, "categories"."topic_featured_link_allowed" AS t1_r37, "categories"."all_topics_wiki" AS t1_r38, "categories"."show_subcategory_list" AS t1_r39, "categories"."num_featured_topics" AS t1_r40, "categories"."default_view" AS t1_r41, "categories"."subcategory_list_style" AS t1_r42, "categories"."default_top_period" AS t1_r43, "categories"."mailinglist_mirror" AS t1_r44, "categories"."minimum_required_tags" AS t1_r45, "categories"."navigate_to_first_post_after_read" AS t1_r46, "categories"."search_priority" AS t1_r47, "categories"."allow_global_tags" AS t1_r48, "categories"."reviewable_by_group_id" AS t1_r49, "categories"."read_only_banner" AS t1_r50, "categories"."default_list_filter" AS t1_r51, "categories"."allow_unlimited_owner_edits_on_first_post" AS t1_r52, "categories"."default_slow_mode_seconds" AS t1_r53, "categories"."uploaded_logo_dark_id" AS t1_r54, "tags"."id" AS t2_r0, "tags"."name" AS t2_r1, "tags"."created_at" AS t2_r2, "tags"."updated_at" AS t2_r3, "tags"."pm_topic_count" AS t2_r4, "tags"."target_tag_id" AS t2_r5, "tags"."description" AS t2_r6, "tags"."public_topic_count" AS t2_r7, "tags"."staff_topic_count" AS t2_r8 FROM "topics" LEFT OUTER JOIN "categories" ON "categories"."id" = "topics"."category_id" LEFT OUTER JOIN "topic_tags" ON "topic_tags"."topic_id" = "topics"."id" LEFT OUTER JOIN "tags" ON "tags"."id" = "topic_tags"."tag_id" LEFT OUTER JOIN topic_users AS tu ON (topics.id = tu.topic_id AND tu.user_id = 29) LEFT JOIN category_users ON category_users.category_id = topics.category_id AND category_users.user_id = 29 WHERE "topics"."deleted_at" IS NULL AND (topics.archetype <> 'private_message') AND (COALESCE(categories.topic_id, 0) <> topics.id) AND (COALESCE(tu.notification_level,1) > 0) AND (topics.category_id = -1
OR
(COALESCE(category_users.notification_level, 1) <> 0 AND (topics.category_id IS NULL OR topics.category_id NOT IN(-1)))
OR tu.notification_level > 1) AND (NOT ( pinned_globally AND pinned_at IS NOT NULL AND (topics.pinned_at > tu.cleared_pinned_at OR tu.cleared_pinned_at IS NULL) )) AND "topics"."id" IN (477, 481, 480, 479, 478, 467, 466, 230, 209, 183, 173, 179, 168, 139, 102, 144, 150, 118, 126, 88, 63, 46, 117, 171, 45, 77, 154, 158, 43, 79) ORDER BY topics.bumped_at DESC
```
Note how there are two extra queries which has to select `DISTINCT
topics.pinned_at` and `DISTINCT topics.bumped_at` because of the
unnecessary left joins to the `topic_tags` and `tags` table result in
duplicated rows in the topic tables. As a result, PG is not able to
use our indexes to effectively execute the query.
Comparing this to the queries being executed when `preload(:tags)` is
used.
```
SELECT "topics"."id" AS t0_r0, "topics"."title" AS t0_r1, "topics"."last_posted_at" AS t0_r2, "topics"."created_at" AS t0_r3, "topics"."updated_at" AS t0_r4, "topics"."views" AS t0_r5, "topics"."posts_count" AS t0_r6, "topics"."user_id" AS t0_r7, "topics"."last_post_user_id" AS t0_r8, "topics"."reply_count" AS t0_r9, "topics"."featured_user1_id" AS t0_r10, "topics"."featured_user2_id" AS t0_r11, "topics"."featured_user3_id" AS t0_r12, "topics"."deleted_at" AS t0_r13, "topics"."highest_post_number" AS t0_r14, "topics"."like_count" AS t0_r15, "topics"."incoming_link_count" AS t0_r16, "topics"."category_id" AS t0_r17, "topics"."visible" AS t0_r18, "topics"."moderator_posts_count" AS t0_r19, "topics"."closed" AS t0_r20, "topics"."archived" AS t0_r21, "topics"."bumped_at" AS t0_r22, "topics"."has_summary" AS t0_r23, "topics"."archetype" AS t0_r24, "topics"."featured_user4_id" AS t0_r25, "topics"."notify_moderators_count" AS t0_r26, "topics"."spam_count" AS t0_r27, "topics"."pinned_at" AS t0_r28, "topics"."score" AS t0_r29, "topics"."percent_rank" AS t0_r30, "topics"."subtype" AS t0_r31, "topics"."slug" AS t0_r32, "topics"."deleted_by_id" AS t0_r33, "topics"."participant_count" AS t0_r34, "topics"."word_count" AS t0_r35, "topics"."excerpt" AS t0_r36, "topics"."pinned_globally" AS t0_r37, "topics"."pinned_until" AS t0_r38, "topics"."fancy_title" AS t0_r39, "topics"."highest_staff_post_number" AS t0_r40, "topics"."featured_link" AS t0_r41, "topics"."reviewable_score" AS t0_r42, "topics"."image_upload_id" AS t0_r43, "topics"."slow_mode_seconds" AS t0_r44, "topics"."bannered_until" AS t0_r45, "topics"."external_id" AS t0_r46, "categories"."id" AS t1_r0, "categories"."name" AS t1_r1, "categories"."color" AS t1_r2, "categories"."topic_id" AS t1_r3, "categories"."topic_count" AS t1_r4, "categories"."created_at" AS t1_r5, "categories"."updated_at" AS t1_r6, "categories"."user_id" AS t1_r7, "categories"."topics_year" AS t1_r8, "categories"."topics_month" AS t1_r9, "categories"."topics_week" AS t1_r10, "categories"."slug" AS t1_r11, "categories"."description" AS t1_r12, "categories"."text_color" AS t1_r13, "categories"."read_restricted" AS t1_r14, "categories"."auto_close_hours" AS t1_r15, "categories"."post_count" AS t1_r16, "categories"."latest_post_id" AS t1_r17, "categories"."latest_topic_id" AS t1_r18, "categories"."position" AS t1_r19, "categories"."parent_category_id" AS t1_r20, "categories"."posts_year" AS t1_r21, "categories"."posts_month" AS t1_r22, "categories"."posts_week" AS t1_r23, "categories"."email_in" AS t1_r24, "categories"."email_in_allow_strangers" AS t1_r25, "categories"."topics_day" AS t1_r26, "categories"."posts_day" AS t1_r27, "categories"."allow_badges" AS t1_r28, "categories"."name_lower" AS t1_r29, "categories"."auto_close_based_on_last_post" AS t1_r30, "categories"."topic_template" AS t1_r31, "categories"."contains_messages" AS t1_r32, "categories"."sort_order" AS t1_r33, "categories"."sort_ascending" AS t1_r34, "categories"."uploaded_logo_id" AS t1_r35, "categories"."uploaded_background_id" AS t1_r36, "categories"."topic_featured_link_allowed" AS t1_r37, "categories"."all_topics_wiki" AS t1_r38, "categories"."show_subcategory_list" AS t1_r39, "categories"."num_featured_topics" AS t1_r40, "categories"."default_view" AS t1_r41, "categories"."subcategory_list_style" AS t1_r42, "categories"."default_top_period" AS t1_r43, "categories"."mailinglist_mirror" AS t1_r44, "categories"."minimum_required_tags" AS t1_r45, "categories"."navigate_to_first_post_after_read" AS t1_r46, "categories"."search_priority" AS t1_r47, "categories"."allow_global_tags" AS t1_r48, "categories"."reviewable_by_group_id" AS t1_r49, "categories"."read_only_banner" AS t1_r50, "categories"."default_list_filter" AS t1_r51, "categories"."allow_unlimited_owner_edits_on_first_post" AS t1_r52, "categories"."default_slow_mode_seconds" AS t1_r53, "categories"."uploaded_logo_dark_id" AS t1_r54 FROM "topics" LEFT OUTER JOIN "categories" ON "categories"."id" = "topics"."category_id" LEFT OUTER JOIN topic_users AS tu ON (topics.id = tu.topic_id AND tu.user_id = 29) LEFT JOIN category_users ON category_users.category_id = topics.category_id AND category_users.user_id = 29 WHERE "topics"."deleted_at" IS NULL AND (topics.archetype <> 'private_message') AND (COALESCE(categories.topic_id, 0) <> topics.id) AND (COALESCE(tu.notification_level,1) > 0) AND (topics.category_id = -1
OR
(COALESCE(category_users.notification_level, 1) <> 0 AND (topics.category_id IS NULL OR topics.category_id NOT IN(-1)))
OR tu.notification_level > 1) AND (pinned_globally AND pinned_at IS NOT NULL AND (topics.pinned_at > tu.cleared_pinned_at OR tu.cleared_pinned_at IS NULL)) ORDER BY "topics"."pinned_at" DESC LIMIT 30
SELECT "topic_tags".* FROM "topic_tags" WHERE "topic_tags"."topic_id" = 7
SELECT "topics"."id" AS t0_r0, "topics"."title" AS t0_r1, "topics"."last_posted_at" AS t0_r2, "topics"."created_at" AS t0_r3, "topics"."updated_at" AS t0_r4, "topics"."views" AS t0_r5, "topics"."posts_count" AS t0_r6, "topics"."user_id" AS t0_r7, "topics"."last_post_user_id" AS t0_r8, "topics"."reply_count" AS t0_r9, "topics"."featured_user1_id" AS t0_r10, "topics"."featured_user2_id" AS t0_r11, "topics"."featured_user3_id" AS t0_r12, "topics"."deleted_at" AS t0_r13, "topics"."highest_post_number" AS t0_r14, "topics"."like_count" AS t0_r15, "topics"."incoming_link_count" AS t0_r16, "topics"."category_id" AS t0_r17, "topics"."visible" AS t0_r18, "topics"."moderator_posts_count" AS t0_r19, "topics"."closed" AS t0_r20, "topics"."archived" AS t0_r21, "topics"."bumped_at" AS t0_r22, "topics"."has_summary" AS t0_r23, "topics"."archetype" AS t0_r24, "topics"."featured_user4_id" AS t0_r25, "topics"."notify_moderators_count" AS t0_r26, "topics"."spam_count" AS t0_r27, "topics"."pinned_at" AS t0_r28, "topics"."score" AS t0_r29, "topics"."percent_rank" AS t0_r30, "topics"."subtype" AS t0_r31, "topics"."slug" AS t0_r32, "topics"."deleted_by_id" AS t0_r33, "topics"."participant_count" AS t0_r34, "topics"."word_count" AS t0_r35, "topics"."excerpt" AS t0_r36, "topics"."pinned_globally" AS t0_r37, "topics"."pinned_until" AS t0_r38, "topics"."fancy_title" AS t0_r39, "topics"."highest_staff_post_number" AS t0_r40, "topics"."featured_link" AS t0_r41, "topics"."reviewable_score" AS t0_r42, "topics"."image_upload_id" AS t0_r43, "topics"."slow_mode_seconds" AS t0_r44, "topics"."bannered_until" AS t0_r45, "topics"."external_id" AS t0_r46, "categories"."id" AS t1_r0, "categories"."name" AS t1_r1, "categories"."color" AS t1_r2, "categories"."topic_id" AS t1_r3, "categories"."topic_count" AS t1_r4, "categories"."created_at" AS t1_r5, "categories"."updated_at" AS t1_r6, "categories"."user_id" AS t1_r7, "categories"."topics_year" AS t1_r8, "categories"."topics_month" AS t1_r9, "categories"."topics_week" AS t1_r10, "categories"."slug" AS t1_r11, "categories"."description" AS t1_r12, "categories"."text_color" AS t1_r13, "categories"."read_restricted" AS t1_r14, "categories"."auto_close_hours" AS t1_r15, "categories"."post_count" AS t1_r16, "categories"."latest_post_id" AS t1_r17, "categories"."latest_topic_id" AS t1_r18, "categories"."position" AS t1_r19, "categories"."parent_category_id" AS t1_r20, "categories"."posts_year" AS t1_r21, "categories"."posts_month" AS t1_r22, "categories"."posts_week" AS t1_r23, "categories"."email_in" AS t1_r24, "categories"."email_in_allow_strangers" AS t1_r25, "categories"."topics_day" AS t1_r26, "categories"."posts_day" AS t1_r27, "categories"."allow_badges" AS t1_r28, "categories"."name_lower" AS t1_r29, "categories"."auto_close_based_on_last_post" AS t1_r30, "categories"."topic_template" AS t1_r31, "categories"."contains_messages" AS t1_r32, "categories"."sort_order" AS t1_r33, "categories"."sort_ascending" AS t1_r34, "categories"."uploaded_logo_id" AS t1_r35, "categories"."uploaded_background_id" AS t1_r36, "categories"."topic_featured_link_allowed" AS t1_r37, "categories"."all_topics_wiki" AS t1_r38, "categories"."show_subcategory_list" AS t1_r39, "categories"."num_featured_topics" AS t1_r40, "categories"."default_view" AS t1_r41, "categories"."subcategory_list_style" AS t1_r42, "categories"."default_top_period" AS t1_r43, "categories"."mailinglist_mirror" AS t1_r44, "categories"."minimum_required_tags" AS t1_r45, "categories"."navigate_to_first_post_after_read" AS t1_r46, "categories"."search_priority" AS t1_r47, "categories"."allow_global_tags" AS t1_r48, "categories"."reviewable_by_group_id" AS t1_r49, "categories"."read_only_banner" AS t1_r50, "categories"."default_list_filter" AS t1_r51, "categories"."allow_unlimited_owner_edits_on_first_post" AS t1_r52, "categories"."default_slow_mode_seconds" AS t1_r53, "categories"."uploaded_logo_dark_id" AS t1_r54 FROM "topics" LEFT OUTER JOIN "categories" ON "categories"."id" = "topics"."category_id" LEFT OUTER JOIN topic_users AS tu ON (topics.id = tu.topic_id AND tu.user_id = 29) LEFT JOIN category_users ON category_users.category_id = topics.category_id AND category_users.user_id = 29 WHERE "topics"."deleted_at" IS NULL AND (topics.archetype <> 'private_message') AND (COALESCE(categories.topic_id, 0) <> topics.id) AND (COALESCE(tu.notification_level,1) > 0) AND (topics.category_id = -1
OR
(COALESCE(category_users.notification_level, 1) <> 0 AND (topics.category_id IS NULL OR topics.category_id NOT IN(-1)))
OR tu.notification_level > 1) AND (NOT ( pinned_globally AND pinned_at IS NOT NULL AND (topics.pinned_at > tu.cleared_pinned_at OR tu.cleared_pinned_at IS NULL) )) ORDER BY topics.bumped_at DESC LIMIT 30
SELECT "topic_tags".* FROM "topic_tags" WHERE "topic_tags"."topic_id" IN (477, 481, 480, 479, 478, 467, 466, 230, 209, 183, 173, 179, 168, 139, 102, 144, 150, 118, 126, 88, 63, 46, 117, 171, 45, 77, 154, 158, 43, 79)
SELECT "tags"."id", "tags"."name", "tags"."created_at", "tags"."updated_at", "tags"."pm_topic_count", "tags"."target_tag_id", "tags"."description", "tags"."public_topic_count", "tags"."staff_topic_count" FROM "tags" WHERE "tags"."id" IN (10, 20, 26, 7, 27, 28, 30, 19, 9, 4, 15, 29, 14, 18, 11, 25, 1, 21, 8, 22, 5, 32)
```
We end up with queries that are much more efficient as those queries can
effectively use the indexes.
This commit introduces the :push_notification event and deprecates :post_notification_alert.
The old :post_notification_alert event was not triggered when pushing chat notifications and did not respect when the user was in "do not disturb" mode.
The new event fixes these issues.
Should fix an iOS regression in f5e8e73. iOS does not pull up the keyboard if the `.focus()` call is delayed by a rendering timeout or an asynchronous ajax call. This PR adds earlier `.focus()` calls if the input element is present.
This plugin is no longer supported, and so we no longer need to run its tests in CI
(removing the comment and the 'Canned Replies' value from the array caused syntax_tree to change to the `%w` syntax)
This was forgotten during the work in 22991bba44
This revealed two differences we were depending on: the merged `actions` hash (re-implemented on the service), and a couple of calls to `composer.send` (now removed)
* FIX Add 'Ignored' flags to Moderator Activity report
The Moderator Activity query didn’t include the number of deferred flags in the Flags Reviewed totals. As this number is designed to reflect how many flags a moderator has seen, reviewed, and made a judgement on, the Ignored ones should also be included.
* Apply suggestions from code review
---------
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
1. recent css regression related to modal upgrade
2. autofocus and on-enter regressions
3. array related linting issue (reliance on Ember's firstObject/lastObject)
This change prevents event bubbling for the Escape key on all modals. Currently when we close the modal using the Escape key, all other event listeners attached will also be triggered (such as closing the chat drawer if it's open).
When we use the escape key to exit lightbox for images within a chat channel, it also closes the chat drawer due to event bubbling (since both lightbox and chat use an event listener on the escape key).
This change prevents event bubbling when using the escape key within lightbox, which means that it will close the lightbox but won't close the chat drawer.
The escape key is used as a shortcut to escape the Discourse Lightbox. However, some browsers also use the escape key to exit fullscreen mode.
This change is to allow escaping the lightbox when browser is in fullscreen mode, while preventing any behavior associated with the Escape key (such as exiting fullscreen). This has to be done on the keydown event, as this means we can handle our logic and then preventDefault before the browser tries to exit fullscreen.
Why this change?
This is a follow up to e8f7b62752.
Tracking of GC stats didn't really belong in the `MethodProfiler` class
so we want to extract that concern into its own class.
As part of this PR, the `track_gc_stat_per_request` site setting has
also been renamed to `instrument_gc_stat_per_request`.
What does this change do?
This change adds a hidden `track_gc_stat_per_request` site setting which
when enabled will track the time spent in GC, major GC count and minor
GC count during a request.
Why is this change needed?
We have plans to tune our GC in production but without any
instrumentation, we will not be able to know if our tuning is effective
or not. This commit takes the first step at instrumenting some basic GC
stats in core during a request which can then be consumed by the discourse-prometheus plugin.
We only want to scroll to the top for successful transitions. If a transition is aborted (e.g. when clicking a chat link when chat is in drawer mode) then we should maintain the existing scroll location.
We were proxying all `/assets/*` requests through to the origin. In local development that was fine, because Rails was able to serve files from the `dist/` directory. But when proxying to a remote origin, we want the local ember-cli to serve its own JS assets
We never propagated the preference change because of the early return, meaning lists listening to it never got to decide if they had to remain hidden.
Also, we don't want to track the preference when there's a single list, as the user didn't choose to see it.
Linking to the #feedback category can break if the category gets renamed or a different site locale is used. By using the correct hashtag (at the time of seeding) this issues can be avoided.
PresenceChannel configuration is cached using redis. That cache is used, and sometimes repopulated, during normal GET requests. When the primary redis server was readonly, that `redis.set` call would raise an error and cause the entire request to fail. Instead, we should ignore the failure and continue without populating the cache.
