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# File 'lib/ar_serializer/serializer.rb', line 46
def self._serialize(mixed_models, attributes, context, only: nil, except: nil, permission: true)
output_for_model = {}
mixed_models.group_by(&:class).each do |klass, models|
next unless klass.respond_to? :_serializer_field_info
models.uniq!
if attributes.any? { |k, _| k == :* }
all_keys = klass._serializer_field_keys.map(&:to_sym)
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
if field.nil? || field.private?
message = "No serializer field `#{field_name}`#{" namespaces: #{current_namespaces.compact}" if current_namespaces.any?} for #{klass}"
raise ArSerializer::InvalidQuery, message
end
ArSerializer.preload_associations models, field.includes if field.includes.present?
end
preload = lambda do |preloader, params|
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
preloader.call(*arguments, **(params || {}))
else
arguments << context unless arity == 1
preloader.call(*arguments)
end
end
preloader_values = {}
if permission == true
permission_field = klass._serializer_field_info :permission
elsif permission
permission_field = klass._serializer_field_info permission
raise ArgumentError, "No permission field #{permission} for #{klass}" unless permission_field
end
if permission_field
preloadeds = permission_field.preloaders.map do |p|
preloader_values[[p, nil]] ||= preload.call p, nil
end
models = models.select do |model|
model.instance_exec(*preloadeds, context, {}, &permission_field.data_block)
end
end
defaults = klass._serializer_field_info :defaults
if defaults
defaults.preloaders.each do |p|
preloader_values[[p, nil]] ||= preload.call p, nil
end
end
attributes.each do |name, sub_args|
field_name = sub_args[:field_name] || name
klass._serializer_field_info(field_name).preloaders.each do |p|
params = sub_args[:params]
preloader_values[[p, params]] ||= preload.call p, params
end
end
models.each do |model|
output_for_model[model] = {}
end
attributes.each do |name, sub_arg|
params = sub_arg[:params]
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
permission_block = info.permission
fallback = info.fallback
sub_results = {}
sub_models = []
models.each do |model|
next if permission_block && !model.instance_exec(context, **(params || {}), &permission_block)
child = model.instance_exec(*preloadeds, context, **(params || {}), &data_block)
if child.is_a?(ArSerializer::ArrayLikeSerializable) || (child.is_a?(Array) && child.any? { |el| el.is_a? ArSerializer::Serializable })
sub_results[model] = [:multiple, child]
sub_models << child.grep(ArSerializer::Serializable)
elsif child.respond_to?(:ar_custom_serializable_models) && child.respond_to?(:ar_custom_serializable_data)
sub_results[model] = [:custom, child]
sub_models << child.ar_custom_serializable_models
elsif child.is_a? ArSerializer::Serializable
sub_results[model] = [:single, child]
sub_models << child
else
sub_results[model] = [:data, child]
end
end
sub_models.flatten!
sub_models.uniq!
unless sub_models.empty?
sub_attributes = sub_arg[:attributes] || {}
info.validate_attributes sub_attributes
result = _serialize(
sub_models,
sub_attributes,
context,
only: info.only,
except: info.except,
permission: info.scoped_access
)
end
models.each do |model|
data = output_for_model[model]
type, res = sub_results[model]
case type
when :single
data[column_name] = result[res]
when :multiple
arr = data[column_name] = []
res.each do |r|
if r.is_a? ArSerializer::Serializable
arr << result[r] if result.key? r
else
arr << r
end
end
when :custom
data[column_name] = res.ar_custom_serializable_data result || {}
when :data
data[column_name] = res
else
data[column_name] = fallback
end
end
end
if defaults
preloadeds = defaults.preloaders.map { |p| preloader_values[[p]] } || []
models.each do |model|
data = model.instance_exec(*preloadeds, context, {}, &defaults.data_block)
output_for_model[model].update data
end
end
end
output_for_model
end
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