handler

in ruby/web/{{cookiecutter.project_name}}/src/handlers/update_item.rb [6:30]

• 20 lines of code
• 3 McCabe index (conditional complexity)

def handler(event:, context:)
  id = event["pathParameters"]["id"]
  item = client.get_item(
    table_name: ENV["SAMPLE_TABLE"],
    key: { "id" => id }
  ).item

  raise ItemNotFoundError if item.nil?

  body = JSON.parse(event["body"])

  data = client.update_item(
    table_name: ENV["SAMPLE_TABLE"],
    key: { "id" => id },
    update_expression: "SET #name = :name",
    expression_attribute_names: { "#name" => "name" },
    expression_attribute_values: { ":name" => body["name"] },
    return_values: "ALL_NEW"
  )

  { statusCode: 200, body: data.attributes.to_json }
rescue ItemNotFoundError
  { statusCode: 404, body: { error: "Item #{id} not found" }.to_json }
end