method
writer_method
writer_method(name, class_name, mapping, allow_nil, converter)
private
Hide source
# File activerecord/lib/active_record/aggregations.rb, line 259 def writer_method(name, class_name, mapping, allow_nil, converter) define_method("#{name}=") do |part| klass = class_name.constantize unless part.is_a?(klass) || converter.nil? || part.nil? part = converter.respond_to?(:call) ? converter.call(part) : klass.send(converter, part) end hash_from_multiparameter_assignment = part.is_a?(Hash) && part.each_key.all? { |k| k.is_a?(Integer) } if hash_from_multiparameter_assignment raise ArgumentError unless part.size == part.each_key.max part = klass.new(*part.sort.map(&:last)) end if part.nil? && allow_nil mapping.each { |key, _| self[key] = nil } @aggregation_cache[name] = nil else mapping.each { |key, value| self[key] = part.send(value) } @aggregation_cache[name] = part.freeze end end end