I have a multi-tenant system (by subdomain) and each subdomain needs
their own perspective on an incrementing check number. This does the
job:
before_validation(:on => :create) do
Check.transaction do
self.number = (Check.maximum(:number) || 0) + 1
end
end
On Jun 17, 1:07 am, Mauro <[email protected]> wrote:
> On 16 June 2011 22:12, Rob Biedenharn <[email protected]> wrote:
>
> > Does everyone here realize that the 'id' is typically tied to a database
> > column that is set to auto-increment (in whatever fashion the underlying
> > database supports) for the primary key?
>
> > Also, if you ever delete a record, the .count will decrease and you'll get a
> > duplicate for the next created record.
>
> I had not thought about this.
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