discourse/app/models/draft.rb

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# frozen_string_literal: true
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class Draft < ActiveRecord::Base
NEW_TOPIC = 'new_topic'
NEW_PRIVATE_MESSAGE = 'new_private_message'
EXISTING_TOPIC = 'topic_'
def self.set(user, key, sequence, data)
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d = find_draft(user, key)
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if d
return if d.sequence > sequence
DB.exec("UPDATE drafts
SET data = :data,
sequence = :sequence,
revisions = revisions + 1
WHERE id = :id", id: d.id, sequence: sequence, data: data)
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else
Draft.create!(user_id: user.id, draft_key: key, data: data, sequence: sequence)
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end
true
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end
def self.get(user, key, sequence)
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d = find_draft(user, key)
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if d && d.sequence == sequence
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d.data
end
end
def self.clear(user, key, sequence)
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d = find_draft(user, key)
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if d && d.sequence <= sequence
d.destroy
end
end
def self.find_draft(user, key)
if user.is_a?(User)
find_by(user_id: user.id, draft_key: key)
else
find_by(user_id: user, draft_key: key)
end
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end
def self.cleanup!
DB.exec("DELETE FROM drafts where sequence < (
SELECT max(s.sequence) from draft_sequences s
WHERE s.draft_key = drafts.draft_key AND
s.user_id = drafts.user_id
)")
# remove old drafts
delete_drafts_older_than_n_days = SiteSetting.delete_drafts_older_than_n_days.days.ago
Draft.where("updated_at < ?", delete_drafts_older_than_n_days).destroy_all
end
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end
# == Schema Information
#
# Table name: drafts
#
# id :integer not null, primary key
# user_id :integer not null
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# draft_key :string not null
# data :text not null
# created_at :datetime not null
# updated_at :datetime not null
# sequence :integer default(0), not null
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# revisions :integer default(1), not null
#
# Indexes
#
# index_drafts_on_user_id_and_draft_key (user_id,draft_key)
#