[Dbix-class] Proposed readonly patch for DBIx::Class

[Alex Povolotsky]

Ben Tilly пишет:
> Often database schemas have tables that should not be changed at
> runtime in the application.  It would be convenient to be able to mark
> this fact in the class.  However to avoid accidents you wind up having
> to override methods in both the Row class and the ResultSet class.
> Having to synchronize changes to 2 classes is kind of messy.
>
> The attached patch makes this look much nicer in the client code.
> With this in the Result class you just say:
>
>    __PACKAGE__->readonly(1);
>
> and now you won't accidentally update that table from in Perl.  It can
> be unset at any time and so doesn't provide any actual security, but
> it is a useful hint.
>
> Is there any possibility that this could be considered for inclusion
> in DBI

Readonly component (dies on insert/update/delete) seems to me to be much 
more reasonable solution. Do not overbloat base class, it is not too 
thin already.

Alex