[Rails] ActiveRecord on data integrity
"Luis G. Gómez"
lgomez at vfxnetwork.com
Fri Nov 19 20:21:31 GMT 2004
Great! Thankk you.
Marcel Molina Jr. wrote:
> On Fri, Nov 19, 2004 at 09:16:26PM +0100, Marten Veldthuis wrote:
>
>>Luis G. G?mez wrote:
>>
>>>Say, if I had:
>>>
>>>class Project < ActiveRecord::Base
>>> belongs_to :portfolio
>>> has_one :project_manager
>>> has_many :milestones
>>> has_and_belongs_to_many :categories
>>>end
>>>
>>>...would AR errase a project's milestones if I errased the project that
>>>owns them?
>>
>>It can, but you need to specify that milestones are dependent on the
>>project:
>>
>> has_many :milestones, :dependent => true
>
>
> The docs for association methods are here:
> http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html
>
> marcel
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