Class: PackAPI::Mapping::ErrorHashToAPIAttributesTransformer

Inherits:
AbstractTransformer show all
Defined in:
lib/pack_api/mapping/error_hash_to_api_attributes_transformer.rb

Overview

Specialized attribute transformer converting the attribute names in an ActiveRecord Error object to those that should be present in the Error Hash in the API Result object.

Constant Summary collapse

NESTED_ATTRIBUTE_ERROR_KEY = 
/\A(?<parent>[\w_]+)\[(?<index>\d+)\]\.(?<child>[\w_]+)\z/

Instance Attribute Summary

Attributes inherited from AbstractTransformer

#api_type, #data_source, #mappings, #model_type, #options

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ ErrorHashToAPIAttributesTransformer

Returns a new instance of ErrorHashToAPIAttributesTransformer.



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# File 'lib/pack_api/mapping/error_hash_to_api_attributes_transformer.rb', line 10

def initialize(config)
  super
  @transform_nested_attributes_with = config[:transform_nested_attributes_with]
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/pack_api/mapping/error_hash_to_api_attributes_transformer.rb', line 15

def execute
  api_attributes = api_attribute_names.flat_map do |api_attribute|
    model_attribute = model_attribute(api_attribute)
    next unless error_present_for?(model_attribute)

    error_keys_for(model_attribute).map do |error_key|
      converted_error_key = nested_attribute_error_key?(error_key) ?
        convert_nested_attribute_error_key(error_key, api_attribute) :
        normalize_association_reference(api_attribute, model_attribute)
      [converted_error_key, data_source[error_key]]
    end
  end
  api_attributes.compact.to_h
end