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# File 'lib/ar_serializer/serializer.rb', line 57
def self._serialize(mixed_value_outputs, attributes, context, include_id, only = nil, except = nil)
mixed_value_outputs.group_by { |v, _o| v.class }.each do |klass, value_outputs|
next unless klass.respond_to? :_serializer_field_info
models = value_outputs.map(&:first)
value_outputs.each { |value, output| output[:id] = value.id } if include_id && klass.method_defined?(:id)
if attributes.any? { |k, _| k == :* }
all_keys = klass._serializer_field_keys.map(&:to_sym) - [:defaults]
all_keys &= only.map(&:to_sym) if only
all_keys -= except.map(&:to_sym) if except
attributes = all_keys.map { |k| [k, {}] } + attributes.reject { |k, _| k == :* }
end
attributes.each do |name, sub_args|
field_name = sub_args[:field_name] || name
field = klass._serializer_field_info field_name
raise ArSerializer::InvalidQuery, "No serializer field `#{field_name}`#{" namespaces: #{current_namespaces}" if current_namespaces} for #{klass}" unless field
ActiveRecord::Associations::Preloader.new.preload models, field.includes if field.includes.present?
end
preloader_params = attributes.flat_map do |name, sub_args|
field_name = sub_args[:field_name] || name
klass._serializer_field_info(field_name).preloaders.map do |p|
[p, sub_args[:params]]
end
end
defaults = klass._serializer_field_info(:defaults)
if defaults
preloader_params += defaults.preloaders.map { |p| [p] }
end
preloader_values = preloader_params.compact.uniq.map do |key|
preloader, params = key
has_keyword = preloader.parameters.any? { |type, _name| %i[key keyreq keyrest].include? type }
arity = preloader.arity.abs
arguments = [models]
if has_keyword
arguments << context unless arity == 2
[key, preloader.call(*arguments, **(params || {}))]
else
arguments << context unless arity == 1
[key, preloader.call(*arguments)]
end
end.to_h
if defaults
preloadeds = defaults.preloaders.map { |p| preloader_values[[p]] } || []
value_outputs.each do |value, output|
data = value.instance_exec(*preloadeds, context, {}, &defaults.data_block)
output.update data
end
end
attributes.each do |name, sub_arg|
params = sub_arg[:params]
sub_calls = []
column_name = sub_arg[:column_name] || name
field_name = sub_arg[:field_name] || name
info = klass._serializer_field_info field_name
preloadeds = info.preloaders.map { |p| preloader_values[[p, params]] } || []
data_block = info.data_block
value_outputs.each do |value, output|
child = value.instance_exec(*preloadeds, context, **(params || {}), &data_block)
if child.is_a?(Array) && child.all? { |el| el.is_a? ArSerializer::Serializable }
output[column_name] = child.map do |record|
data = {}
sub_calls << [record, data]
data
end
elsif child.respond_to? :ar_serializer_build_sub_calls
sub_output, record_elements = child.ar_serializer_build_sub_calls
record_elements.each { |o| sub_calls << o }
output[column_name] = sub_output
elsif child.is_a? ArSerializer::Serializable
data = {}
sub_calls << [child, data]
output[column_name] = data
else
output[column_name] = child
end
end
next if sub_calls.empty?
sub_attributes = sub_arg[:attributes] || {}
info.validate_attributes sub_attributes
_serialize sub_calls, sub_attributes, context, include_id, info.only, info.except
end
end
end
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