[Rails] ActiveRecord on data integrity

[Jeremy Kemper]

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Luis G. Gómez wrote:
| ...would AR errase a project's milestones if I errased the project that
| owns them?

has_many and has_one use the :dependent option to specify whether you
want associated objects to be destroyed along with the parent object.
The default is false.

class Project < ActiveRecord::Base
~  has_many :milestones, :dependent => true
end

will destroy associated milestones when the project is destroyed.  See
the has_many options at
http://ar.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html#M000006
for more documentation.

Best,
jeremy
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