[Dbix-class] inflate_column and sql_maker->quote_char/name_sep

Matt S Trout dbix-class at trout.me.uk
Thu Mar 2 21:42:21 CET 2006


On Thu, Mar 02, 2006 at 09:19:42PM +0100, Bernhard Graf wrote:
> Matt S Trout wrote:
> > On Thu, Mar 02, 2006 at 08:17:33PM +0100, Bernhard Graf wrote:
> > > Matt S Trout wrote:
> > > > > use base 'DBIx::Class::Schema';
> > > > > __PACKAGE__->load_classes;
> > > > > __PACKAGE__->storage->sql_maker->quote_char('`');
> > > > > __PACKAGE__->storage->sql_maker->name_sep('.');
> > > > >
> > > > > ?
> > > > >
> > > > > This gives me:
> > > > >
> > > > > Can't call method "sql_maker" on an undefined value at
> > > > > TDW/Schema.pm line 10. Compilation failed in require at app.pl
> > > > > line 6.
> > > > > BEGIN failed--compilation aborted at app.pl line 6.
> > > >
> > > > Ah. Storage isn't initialised unril you call connect/connection,
> > > > as noted in the DBIx::Class::Schema docs. Should have mentioned
> > > > that, sorry.
> > >
> > > I'm really confused now.
> > > What do you mean with "isn't initialised"? Undefined?
> > >
> > > Does that mean, that in my application code I have to call
> > > my $schema = CLASS->connect()
> > > first and then
> > > $schema->storage->sql_maker->quote_char('`');
> > > $schema->storage->sql_maker->name_sep('.');
> >
> > Right.
> >
> > > What about $schema->storage->on_connect_do() then?
> > > Looks like a hen-egg problem...
> >
> > ->connect connects the schema to the storage object. The storage
> > object doesn't spawn a dbh until it needs one.
> 
> To sum it up:
> 
> my $schema = My::Schema->connect(...);
> $schema->storage->on_connect_do(...);
> $schema->storage->sql_maker->quote_char('`');
> $schema->storage->sql_maker->name_sep('.');
> 
> is the recommended approach?

That should work fine. It should be fairly trivial to overload new() in
Catalyst::Model::DBIC::Schema to do this for you automatically as well.

-- 
     Matt S Trout       Offering custom development, consultancy and support
  Technical Director    contracts for Catalyst, DBIx::Class and BAST. Contact
Shadowcat Systems Ltd.  mst (at) shadowcatsystems.co.uk for more information

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