Aws::Record

A data mapping abstraction over the AWS SDK for Ruby's client for Amazon DynamoDB.

This library is currently under development. More features will be added as we approach general availability, and while our initial release has as small of an API surface area as possible, the interface may change before the GA release.

We would like to invite you to be a part of the ongoing development of this gem. We welcome your contributions, and would also be happy to hear from you about how you would like to use this gem. Feature requests are welcome.

Links of Interest

Installation

Aws::Record is available as the aws-record gem from RubyGems.

gem install 'aws-record'
gem 'aws-record', '~> 1.0'

This automatically includes a dependency on the aws-sdk-resources gem, major version 2. Be sure to include the aws-sdk or aws-sdk-resources gem in your Gemfile if you need to lock to a specific version, like so:

# Gemfile

gem 'aws-record', '~> 1.0'
gem 'aws-sdk-resources', '~> 2.5'

Usage

To create a model that uses aws-record features, simply include the provided module:

class MyModel
  include Aws::Record
end

You can then specify attributes using the aws-record DSL:

class MyModel
  include Aws::Record
  integer_attr :id, hash_key: true
  string_attr  :name, range_key: true
  boolean_attr :active, database_attribute_name: "is_active_flag"
end

If a matching table does not exist in DynamoDB, you can use table migrations to create your table.

migration = Aws::Record::TableMigration.new(MyModel)
migration.create!(
  provisioned_throughput: {
    read_capacity_units: 5,
    write_capacity_units: 2
  }
)
migration.wait_until_available

With a table in place, you can then use your model class to manipulate items in your table:

item = MyModel.find(id: 1, name: "Hello Record")
item.active = true
item.save
item.delete!

MyModel.find(id: 1, name: "Hello Record") # => nil

item = MyModel.new
item.id = 2
item.name = "Item"
item.active = false
item.save