package Catalyst::Controller::DBIC::API::StoredResultSource;
our $VERSION = '2.001003';
#ABSTRACT: Provides acessors for static resources
use Moose::Role;
use MooseX::Types::Moose(':all');
use Catalyst::Controller::DBIC::API::Types(':all');
use Try::Tiny;
use namespace::autoclean;
requires '_application';
has 'class' => ( is => 'ro', isa => Str, writer => '_set_class' );
has 'stored_result_source' =>
(
is => 'ro',
isa => ResultSource,
lazy_build => 1,
);
has 'stored_model' =>
(
is => 'ro',
isa => Model,
lazy_build => 1,
);
sub _build_stored_model
{
return $_[0]->_application->model($_[0]->class);
}
sub _build_stored_result_source
{
return shift->stored_model->result_source();
}
sub check_has_column
{
my ($self, $col) = @_;
die "Column '$col' does not exist in ResultSet '${\$self->class}'"
unless $self->stored_result_source->has_column($col);
}
sub check_has_relation
{
my ($self, $rel, $other, $nest, $static) = @_;
$nest ||= $self->stored_result_source;
if(HashRef->check($other))
{
my $rel_src = $nest->related_source($rel);
die "Relation '$rel_src' does not exist" if not defined($rel_src);
while(my($k,$v) = each %$other)
{
$self->check_has_relation($k, $v, $rel_src, $static);
}
}
else
{
return 1 if $static && ArrayRef->check($other) && $other->[0] eq '*';
die "Relation '$rel' does not exist in ${\$nest->from}"
unless $nest->has_relationship($rel) || $nest->has_column($rel);
return 1;
}
}
sub check_column_relation
{
my ($self, $col_rel, $static) = @_;
if(HashRef->check($col_rel))
{
try
{
while(my($k,$v) = each %$col_rel)
{
$self->check_has_relation($k, $v, undef, $static);
}
}
catch
{
# not a relation but a column with a predicate
while(my($k, undef) = each %$col_rel)
{
$self->check_has_column($k);
}
}
}
else
{
$self->check_has_column($col_rel);
}
}
1;
__END__
=pod
=head1 NAME
Catalyst::Controller::DBIC::API::StoredResultSource - Provides acessors for static resources
=head1 VERSION
version 2.001003
=head1 PUBLIC_ATTRIBUTES
=head2 class is: ro, isa: Str
class is the name of the class that is the model for this controller
=head2 stored_result_source is: ro, isa: L<Catalyst::Controller::DBIC::API::Types/ResultSource>
This is the result source for the controller
=head2 stored_model is: ro, isa: L<Catalyst::Controller::DBIC::API::Types/Model>
This is the model for the controller
=head1 PUBLIC_METHODS
=head2 check_has_column
Convenience method for checking if the column exists in the result source
=head2 check_has_relation
check_has_relation meticulously delves into the result sources relationships to determine if the provided relation is valid. Accepts a relation name, and optional HashRef indicating a nested relationship. Iterates, and recurses through provided arguments until exhausted. Dies if at any time the relationship or column does not exist.
=head2 check_column_relation
Convenience method to first check if the provided argument is a valid relation (if it is a HashRef) or column.
=head1 AUTHORS
Nicholas Perez <nperez@cpan.org>
Luke Saunders <luke.saunders@gmail.com>
Alexander Hartmaier <abraxxa@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2010 by Luke Saunders, Nicholas Perez, et al..
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut