[Dbix-class] Complex table joins

[Richard Jones]

Matt S Trout wrote:
> On Mon, May 21, 2007 at 08:06:48PM +0100, Richard Jones wrote:
>> I also think the problem is that I haven't managed to find a way to 
>> define a relationship in Schema::Foo to a table removed by 2 levels:
> 
> You don't. You define a rel in bar and do
> 
> join => { name_of_foo_to_bar_rel => 'name_of_bar_to_baz_rel' }
> 
> then $foo->name_of_foo_to_bar_rel->name_of_bar_to_baz_rel->the_field_I_want
> 

Well, it's still not working :-(

Here's what I have:

Schema::Foo
__PACKAGE__->belongs_to( 'bar', 'Schema::Bar', 'bar_id',
   { join_type => 'left' } );

Schema::Bar
__PACKAGE__->has_many( 'foos', 'Schema::Foo', 'bar_id',
   { join_type => 'left' } );
__PACKAGE__->belongs_to( 'baz', 'Schema::Baz', 'baz_id',
   { join_type => 'left' } );

Schema::Baz
__PACKAGE__->has_many( 'bars', 'Schema::Bar', 'baz_id',
   { join_type => 'left' });

 >You don't. You define a rel in bar and do
 >
 >join => { name_of_foo_to_bar_rel => 'name_of_bar_to_baz_rel' }

OK, so:
name_of_foo_to_bar_rel = foos (has_many rel. in Schema::Bar)
name_of_bar_to_baz_rel = bars (has_many rel. in Schema::Baz)

In Controller:Foo:

join => [ { foos => 'bars' }, @other_relationship_names ],

Here's what I get:
Caught exception in MyApp::Controller::Search->db_lookup 
"DBIx::Class::ResultSet::pager(): No such relationship foos at ...

Also tried the belongs_to rel. in Schema::Bar:

join => [ { foos => 'baz' }, @other_relationship_names ],

I've checked & re-checked, but obviously missed it. All other 
relationships working fine.
-- 
Richard Jones