Class: ActionController::Parameters

Inherits:
Object
  • Object
show all
Defined in:
lib/json_api_params.rb

Instance Method Summary collapse

Instance Method Details

#extract_json_api ⇒ Object 



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# File 'lib/json_api_params.rb', line 11

def extract_json_api
  case data = fetch(:data)
  when Array
    return data.map {|_data|
      self.class.new(data: _data).extract_json_api
    }
  end

  relationships = data.fetch(:relationships) { self.class.new }.to_unsafe_hash.map {|key, value|
    [key.underscore, value]
  }.to_h

  attributes = data.fetch(:attributes) { self.class.new }.to_unsafe_hash.map {|key, value|
    [key.underscore, value]
  }.to_h

  extracted = relationships.each_with_object(attributes) {|(key, value), attrs|
    case _data = value.fetch('data')
    when Array
      attrs["#{key}_ids"] = _data.map {|item|
        item.fetch('id')
      }
    when nil
      attrs["#{key}_id"] = nil
    else
      attrs["#{key}_id"] = _data.fetch('id')
    end
  }

  self.class.new(extracted)
end