<img src=“https://secure.travis-ci.org/data-axle/cassandra_object.png?rvm=1.9.3” />
Cassandra Object uses ActiveModel to mimic much of the behavior in ActiveRecord.
Add the following to your Gemfile:
gem 'gotime-cassandra_object'
Change the version of Cassandra accordingly. Recent versions have not been backward compatible.
class Widget < CassandraObject::Base string :name string :description integer :price array :colors, unique: true validates :name, presence: :true before_create do self.description = "#{name} is the best product ever" end end
CassandraObject::Base.config = { keyspace: 'my_app_development', servers: '127.0.0.1:9160', thrift: { timeout: 20 retries: 2 } }
Cassandra Object has equivalent methods as ActiveRecord:
widget = Widget.new widget.valid? widget = Widget.create(name: 'Acme', price: 100) widget.update_attribute(:price, 1200) widget.update_attributes(price: 1200, name: 'Acme Corporation') widget.attributes = {price: 300} widget.price_was widget.save widget.save!
widget = Widget.find(uuid) widget = Widget.first widgets = Widget.all Widget.find_each do |widget| ... end
Some lightweight scoping features are available:
Widget.where('color' => 'red') Widget.select(['name', 'color']) Widget.limit(10)