mastodon/db/post_migrate/20241205135925_remove_legacy_user_settings_columns.rb

46 lines
1.8 KiB
Ruby

# frozen_string_literal: true
class RemoveLegacyUserSettingsColumns < ActiveRecord::Migration[7.2]
disable_ddl_transaction!
def up
# In normal usage this should not find anything to delete
# Deletion here is already done in RemoveLegacyUserSettingsData migration
# and no data like this should be created from app at this point
# Deleting again out of caution
connection.execute(<<~SQL.squish)
DELETE FROM settings
WHERE
thing_type IS NOT NULL
AND thing_id IS NOT NULL
SQL
# When running these migrations on mastodon.social, we saw 'notification_emails'
# and 'interactions' records that were not associated to a user and caused a
# migration issue.
# While I have not been able to pinpoint the exact cause of the issue, it is likely
# related to the settings system changes made in b11fdc3ae3f90731c01149a5a36dc64e065d4ea2.
# So, delete a few user settings that should already have been deleted.
connection.execute(<<~SQL.squish)
DELETE FROM settings
WHERE var IN (
'notification_emails', 'interactions', 'boost_modal', 'auto_play_gif',
'delete_modal', 'system_font_ui', 'default_sensitive', 'unfollow_modal',
'reduce_motion', 'display_sensitive_media', 'hide_network', 'expand_spoilers',
'display_media', 'aggregate_reblogs', 'show_application', 'advanced_layout',
'use_blurhash', 'use_pending_items')
SQL
add_index :settings, :var, unique: true, algorithm: :concurrently
remove_index :settings, [:thing_type, :thing_id, :var], name: :index_settings_on_thing_type_and_thing_id_and_var, unique: true
safety_assured do
remove_column :settings, :thing_type, :string
remove_column :settings, :thing_id, :bigint
end
end
def down
raise ActiveRecord::IrreversibleMigration
end
end