Ruby on Rails

Colin Law wrote in post #971847:
> On 2 January 2011 14:11, Michal Burak <lists@ruby-forum.com> wrote:
>>>>
>> link1.save!
>>
>> foo2 = create_foo.save!
>> link2 = foo2.www_links.create(:href => 'wp.pl')
>>
>> # when
>> link2.save!
>>
>> # then
>> errors occured !
>> end
>
> So you are just wanting uniqueness of www_link.href? Will not
> validates_uniqueness_of in WwwLink class (backed up by a unique
> constraint in the database of course) do the job? I think in this
> case it will be the foo2.www_links.create that will fail.
>
> Colin

The constraint is on "owner" and "href", not "href" itself.
I can have multiple links with the same href. But those cannot be with
the same owner_id.

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