mastodon/db/migrate/20230215074424_move_glitch_user_settings.rb
Eugen Rochko 8bf9bd5ac8 [Glitch] Fix n+1 query in settings migration
Port 0ad2413b35 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>
2023-05-08 16:15:10 +02:00

63 lines
1.8 KiB
Ruby

# frozen_string_literal: true
class MoveGlitchUserSettings < ActiveRecord::Migration[6.1]
disable_ddl_transaction!
class User < ApplicationRecord; end
MAPPING = {
favourite_modal: 'web.favourite_modal',
system_emoji_font: 'web.use_system_emoji_font',
hide_followers_count: 'hide_followers_count',
default_content_type: 'default_content_type',
flavour: 'flavour',
skin: 'skin',
notification_emails: {
trending_link: 'notification_emails.link_trends',
trending_status: 'notification_emails.status_trends',
}.freeze,
}.freeze
class LegacySetting < ApplicationRecord
self.table_name = 'settings'
def var
self[:var]&.to_sym
end
def value
YAML.safe_load(self[:value], permitted_classes: [ActiveSupport::HashWithIndifferentAccess, Symbol]) if self[:value].present?
end
end
def up
User.find_in_batches do |users|
previous_settings_for_batch = LegacySetting.where(thing_type: 'User', thing_id: users.map(&:id)).group_by(&:thing_id)
users.each do |user|
previous_settings = previous_settings_for_batch[user.id]&.index_by(&:var) || {}
user_settings = Oj.load(user.settings || '{}')
user_settings.delete('theme')
MAPPING.each do |legacy_key, new_key|
value = previous_settings[legacy_key]&.value
next if value.blank?
if value.is_a?(Hash)
value.each do |nested_key, nested_value|
user_settings[MAPPING[legacy_key][nested_key.to_sym]] = nested_value
end
else
user_settings[new_key] = value
end
end
user.update_column('settings', Oj.dump(user_settings)) # rubocop:disable Rails/SkipsModelValidations
end
end
end
def down; end
end