mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 21:10:17 +08:00
30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
45 lines
1.1 KiB
Ruby
45 lines
1.1 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class DraftSequence < ActiveRecord::Base
|
|
def self.next!(user, key)
|
|
user_id = user
|
|
user_id = user.id unless user.is_a?(Integer)
|
|
|
|
return 0 if user_id < 0
|
|
|
|
h = { user_id: user_id, draft_key: key }
|
|
c = DraftSequence.find_by(h)
|
|
c ||= DraftSequence.new(h)
|
|
c.sequence ||= 0
|
|
c.sequence += 1
|
|
c.save!
|
|
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
|
|
|
|
def self.current(user, key)
|
|
return nil unless user
|
|
|
|
user_id = user
|
|
user_id = user.id unless user.is_a?(Integer)
|
|
|
|
# perf critical path
|
|
r, _ = DB.query_single('select sequence from draft_sequences where user_id = ? and draft_key = ?', user_id, key)
|
|
r.to_i
|
|
end
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: draft_sequences
|
|
#
|
|
# id :integer not null, primary key
|
|
# user_id :integer not null
|
|
# draft_key :string not null
|
|
# sequence :integer not null
|
|
#
|
|
# Indexes
|
|
#
|
|
# index_draft_sequences_on_user_id_and_draft_key (user_id,draft_key) UNIQUE
|
|
#
|