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