[Dbix-class] on_field_change DBIC hooks

[Jason Kohles]

On Jul 29, 2007, at 4:36 AM, Pedro Melo wrote:

> Hi,
>
> I implementing a "on_field_change" hook. External classes can hook  
> the DBIC model to observe (usually) status changes and start some  
> business logic processes. The reason I choose this approach is that  
> it creates a loosely coupled system, where I can add other  
> components later without going back and modifying old code.
>
> From my first look through the code, I think the set_column() is  
> the proper place to do this. But we could set_column() and then not  
> update().
>
> So update() and look at the dirty columns is probably safer.
>
> If I want to trigger on insert also, I also have to watch for insert 
> ().
>
> Another option is to create an InflateColumn::Trigger and use that,  
> but it might not be what people expect.
>
> Before I start coding, has anybody done this before? Suggestions?
>

Did you look at DBIx::Class::CDBICompat::Triggers?

-- 
Jason Kohles
email at jasonkohles.com
http://www.jasonkohles.com/
"A witty saying proves nothing."  -- Voltaire