DEV: remove exec_sql and replace with mini_sql

Introduce new patterns for direct sql that are safe and fast.

MiniSql is not prone to memory bloat that can happen with direct PG usage.
It also has an extremely fast materializer and very a convenient API

- DB.exec(sql, *params) => runs sql returns row count
- DB.query(sql, *params) => runs sql returns usable objects (not a hash)
- DB.query_hash(sql, *params) => runs sql returns an array of hashes
- DB.query_single(sql, *params) => runs sql and returns a flat one dimensional array
- DB.build(sql) => returns a sql builder

See more at: https://github.com/discourse/mini_sql
This commit is contained in:
Sam
2018-06-19 16:13:14 +10:00
parent cc3fc87dd7
commit 5f64fd0a21
112 changed files with 782 additions and 763 deletions

View File

@ -11,7 +11,7 @@ class DraftSequence < ActiveRecord::Base
c.sequence ||= 0
c.sequence += 1
c.save!
exec_sql("DELETE FROM drafts WHERE user_id = :user_id AND draft_key = :draft_key AND sequence < :sequence", draft_key: key, user_id: user_id, sequence: c.sequence)
DB.exec("DELETE FROM drafts WHERE user_id = :user_id AND draft_key = :draft_key AND sequence < :sequence", draft_key: key, user_id: user_id, sequence: c.sequence)
c.sequence
end
@ -22,8 +22,8 @@ class DraftSequence < ActiveRecord::Base
user_id = user.id unless user.is_a?(Integer)
# perf critical path
r = exec_sql('select sequence from draft_sequences where user_id = ? and draft_key = ?', user_id, key).values
r.length.zero? ? 0 : r[0][0]
r, _ = DB.query_single('select sequence from draft_sequences where user_id = ? and draft_key = ?', user_id, key)
r.to_i
end
end