migrations/2019-08-11-000918_add_nsfw_columns/up.sql

   1 ALTER TABLE community
   2     ADD COLUMN nsfw boolean DEFAULT FALSE NOT NULL;
   3
   4 ALTER TABLE post
   5     ADD COLUMN nsfw boolean DEFAULT FALSE NOT NULL;
   6
   7 ALTER TABLE user_
   8     ADD COLUMN show_nsfw boolean DEFAULT FALSE NOT NULL;
   9
  10 -- The views
  11 DROP VIEW community_view;
  12
  13 CREATE VIEW community_view AS
  14 with all_community AS (
  15     SELECT
  16         *,
  17         (
  18             SELECT
  19                 name
  20             FROM
  21                 user_ u
  22             WHERE
  23                 c.creator_id = u.id) AS creator_name,
  24         (
  25             SELECT
  26                 name
  27             FROM
  28                 category ct
  29             WHERE
  30                 c.category_id = ct.id) AS category_name,
  31         (
  32             SELECT
  33                 count(*)
  34             FROM
  35                 community_follower cf
  36             WHERE
  37                 cf.community_id = c.id) AS number_of_subscribers,
  38         (
  39             SELECT
  40                 count(*)
  41             FROM
  42                 post p
  43             WHERE
  44                 p.community_id = c.id) AS number_of_posts,
  45         (
  46             SELECT
  47                 count(*)
  48             FROM
  49                 comment co,
  50                 post p
  51             WHERE
  52                 c.id = p.community_id
  53                 AND p.id = co.post_id) AS number_of_comments,
  54         hot_rank ((
  55             SELECT
  56                 count(*)
  57             FROM community_follower cf
  58             WHERE
  59                 cf.community_id = c.id), c.published) AS hot_rank
  60 FROM
  61     community c
  62 )
  63 SELECT
  64     ac.*,
  65     u.id AS user_id,
  66     (
  67         SELECT
  68             cf.id::boolean
  69         FROM
  70             community_follower cf
  71         WHERE
  72             u.id = cf.user_id
  73             AND ac.id = cf.community_id) AS subscribed
  74 FROM
  75     user_ u
  76     CROSS JOIN all_community ac
  77 UNION ALL
  78 SELECT
  79     ac.*,
  80     NULL AS user_id,
  81     NULL AS subscribed
  82 FROM
  83     all_community ac;
  84
  85 -- Post view
  86 DROP VIEW post_view;
  87
  88 CREATE VIEW post_view AS
  89 with all_post AS (
  90     SELECT
  91         p.*,
  92         (
  93             SELECT
  94                 name
  95             FROM
  96                 user_
  97             WHERE
  98                 p.creator_id = user_.id) AS creator_name,
  99         (
 100             SELECT
 101                 name
 102             FROM
 103                 community
 104             WHERE
 105                 p.community_id = community.id) AS community_name,
 106         (
 107             SELECT
 108                 removed
 109             FROM
 110                 community c
 111             WHERE
 112                 p.community_id = c.id) AS community_removed,
 113         (
 114             SELECT
 115                 deleted
 116             FROM
 117                 community c
 118             WHERE
 119                 p.community_id = c.id) AS community_deleted,
 120         (
 121             SELECT
 122                 nsfw
 123             FROM
 124                 community c
 125             WHERE
 126                 p.community_id = c.id) AS community_nsfw,
 127         (
 128             SELECT
 129                 count(*)
 130             FROM
 131                 comment
 132             WHERE
 133                 comment.post_id = p.id) AS number_of_comments,
 134         coalesce(sum(pl.score), 0) AS score,
 135         count(
 136             CASE WHEN pl.score = 1 THEN
 137                 1
 138             ELSE
 139                 NULL
 140             END) AS upvotes,
 141         count(
 142             CASE WHEN pl.score = - 1 THEN
 143                 1
 144             ELSE
 145                 NULL
 146             END) AS downvotes,
 147         hot_rank (coalesce(sum(pl.score), 0), p.published) AS hot_rank
 148     FROM
 149         post p
 150         LEFT JOIN post_like pl ON p.id = pl.post_id
 151     GROUP BY
 152         p.id
 153 )
 154 SELECT
 155     ap.*,
 156     u.id AS user_id,
 157     coalesce(pl.score, 0) AS my_vote,
 158     (
 159         SELECT
 160             cf.id::bool
 161         FROM
 162             community_follower cf
 163         WHERE
 164             u.id = cf.user_id
 165             AND cf.community_id = ap.community_id) AS subscribed,
 166     (
 167         SELECT
 168             pr.id::bool
 169         FROM
 170             post_read pr
 171         WHERE
 172             u.id = pr.user_id
 173             AND pr.post_id = ap.id) AS read,
 174     (
 175         SELECT
 176             ps.id::bool
 177         FROM
 178             post_saved ps
 179         WHERE
 180             u.id = ps.user_id
 181             AND ps.post_id = ap.id) AS saved
 182 FROM
 183     user_ u
 184     CROSS JOIN all_post ap
 185     LEFT JOIN post_like pl ON u.id = pl.user_id
 186         AND ap.id = pl.post_id
 187     UNION ALL
 188     SELECT
 189         ap.*,
 190         NULL AS user_id,
 191         NULL AS my_vote,
 192         NULL AS subscribed,
 193         NULL AS read,
 194         NULL AS saved
 195     FROM
 196         all_post ap;
 197