Instantiating With Sequel::Model

Published 07 May 2008 by Aimred Devs

One nice thing about Sequel::Model is that it allows both hash and block instantiation of models.

1 values = { :name => "Bob Roberts" }
2 organisation = Organisation.new( values ) do |o|
3   o.name ||= random_organisation_name
4   o.email_address ||= random_organisation_email
5   o.phone_number ||= random_phone_number
6 end

The call to Organisation.new( values ) sets the attributes from the hash and then using Ruby’s ||= operator (remember a ||= b is equivalent to a = a || b) in the block we set any attributes not present in the hash.

Aimred is a specialist Ruby and Ruby on Rails development house and consultancy based in Cape Town, South Africa.