31 lines
1.1 KiB
Ruby
31 lines
1.1 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
# Provides a way to work around Rails issue where dependent objects are all
|
|
# loaded into memory before destroyed: https://github.com/rails/rails/issues/22510.
|
|
#
|
|
# This concern allows an ActiveRecord module to destroy all its dependent
|
|
# associations in batches. The idea is borrowed from https://github.com/thisismydesign/batch_dependent_associations.
|
|
#
|
|
# The differences here with that gem:
|
|
#
|
|
# 1. We allow excluding certain associations.
|
|
# 2. We don't need to support delete_all since we can use the EachBatch concern.
|
|
module BatchDestroyDependentAssociations
|
|
extend ActiveSupport::Concern
|
|
|
|
DEPENDENT_ASSOCIATIONS_BATCH_SIZE = 1000
|
|
|
|
def dependent_associations_to_destroy
|
|
self.class.reflect_on_all_associations(:has_many).select { |assoc| assoc.options[:dependent] == :destroy }
|
|
end
|
|
|
|
def destroy_dependent_associations_in_batches(exclude: [])
|
|
dependent_associations_to_destroy.each do |association|
|
|
next if exclude.include?(association.name)
|
|
|
|
# rubocop:disable GitlabSecurity/PublicSend
|
|
public_send(association.name).find_each(batch_size: DEPENDENT_ASSOCIATIONS_BATCH_SIZE, &:destroy)
|
|
end
|
|
end
|
|
end
|