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# frozen_string_literal: true
# Disables usage of STI
# See https://docs.gitlab.com/ee/development/database/single_table_inheritance.html
module DisablesSti
extend ActiveSupport::Concern
SKIP_STI_CHECK = Gitlab.dev_or_test_env? &&
Gitlab::Utils.to_boolean(ENV['SKIP_STI_CHECK'], default: false)
included do
class_attribute :allow_legacy_sti_class
end
class_methods do
def new(...)
if sti_class_disallowed?
raise(
"Do not use Single Table Inheritance (`#{name}` inherits `#{base_class.name}`). " \
"See https://docs.gitlab.com/ee/development/database/single_table_inheritance.html" # rubocop:disable Gitlab/DocUrl -- route helpers don't always work
)
end
super
end
def sti_class_disallowed?
return false if SKIP_STI_CHECK
self != base_class && !allow_legacy_sti_class && has_attribute?(inheritance_column)
end
end
end
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