[Dbix-class] DBIx and Arbitrary SQL through a custom ResultSource
Vangelis Katsikaros
ibob17 at yahoo.gr
Sat Jan 21 10:15:05 GMT 2012
Hello
I had a problem following the instructions in "Arbitrary SQL through a
custom ResultSource" [1] since it gave me an error of `Can't locate
object method "result_source_instance"`
I found a solution in this perlmonk answer [2]. Indeed this works:
<code>---------------------------
package Dir::Dir::ComplexQuery;
use strict;
use base 'DBIx::Class::Core';
__PACKAGE__->table( 'dummy_table_name' );
__PACKAGE__->add_columns( qw/col1 col2 col3/ );
__PACKAGE__->result_source_instance->name( \q!(complex SQL ... )! );
</code>---------------------------
and I can normally do:
...->resultset('ComplexQuery')->search();
My questions are the following:
1. The function "table" is the one from
DBIx::Class::ResultSourceProxy::Table as described in [3], right? I am
using `DBIx::Class::Schema::Loader` so I never had created a DBIx "class
table" myself.
2. The "__PACKAGE__->table('table_name')" will NOT trigger a creation
of this table (in this case it's a view) to the actual DB, correct?
Or is there a scenario where the creation of a view hac be triggered and
I can end up with a view named 'dummy_table_name' in my DB?
3. In which DBIx package is "result_source_instance" defined? I did
searched but I couldn't find it - maybe I am not searching the right way.
[1]
http://search.cpan.org/~arodland/DBIx-Class-0.08196/lib/DBIx/Class/Manual/Cookbook.pod#Arbitrary_SQL_through_a_custom_ResultSource
[2] http://www.perlmonks.org/?node_id=658193
[3]
http://search.cpan.org/~arodland/DBIx-Class-0.08196/lib/DBIx/Class/ResultSource.pm#DESCRIPTION
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