method
delete_records
v4.0.2 -
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Class: ActiveRecord::Associations::HasManyThroughAssociation
delete_records(records, method)
private
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# File activerecord/lib/active_record/associations/has_many_through_association.rb, line 131 def delete_records(records, method) ensure_not_nested # This is unoptimised; it will load all the target records # even when we just want to delete everything. records = load_target if records == :all scope = through_association.scope scope.where! construct_join_attributes(*records) case method when :destroy count = scope.destroy_all.length when :nullify count = scope.update_all(source_reflection.foreign_key => nil) else count = scope.delete_all end delete_through_records(records) if source_reflection.options[:counter_cache] counter = source_reflection.counter_cache_column klass.decrement_counter counter, records.map(&:id) end if through_reflection.macro == :has_many && update_through_counter?(method) update_counter(-count, through_reflection) end update_counter(-count) end