I'm fairly new Perl so any help on working this out is awesome.

The application I'm working on is based on catalyst MVC architecture. My Postgresql table looks like this: 
CREATE TABLE zips (
    zip_code CHAR(5) NOT NULL,
    zip_type CHAR(1),
    city_name VARCHAR(64),
    city_type CHAR(1),
    state_name VARCHAR(64),
    state_abbr CHAR(2) NOT NULL,
    area_code CHAR(3),
    latitude NUMERIC(9,6) NOT NULL,
    longitude NUMERIC(9,6) NOT NULL
);

CREATE INDEX zip_codes ON zips (zip_code);
CREATE INDEX state_abbrs ON zips (state_abbr);
CREATE INDEX city_names ON zips USING btree (city_name); 

CREATE TABLE distance_cache (
    orig_zip CHAR(5) NOT NULL,
    dest_zip CHAR(5) NOT NULL,
    miles SMALLINT
);

[download]


My search by zipcode is working great and turning out the results I need. Searching by city and state however, is not working. This started not working when I had to create a backup of zips called zips_backup because I corrupted the zips table. I changed a perl module to pull from zips_backup . As far as I can tell, this one module is the only thing that was changed but some insight would be great.

I can supply any files that one would need. Thank you in advance - I look forward to learning whats going on with this.
Here is the module I'm referring to: 
package WeilMclainDB::Zips;

use base qw/DBIx::Class/;

__PACKAGE__->load_components(qw/PK::Auto Core/);

__PACKAGE__->table('zips');

__PACKAGE__->add_columns(qw/zip_code zip_type city_name city_type stat
+e_name state_abbr area_code latitude longitude/);

__PACKAGE__->resultset_class('WeilMclainDB::ZipsResultSet');

1;

package WeilMclainDB::ZipsResultSet;
use base 'DBIx::Class::ResultSet';
use Geo::Distance;

sub get_zip {
    my ($self, $city, $state) = @_;
    #return undef unless ($city && $state =~ /^(\d*)$/);

    if (my $zip = $self->single({city_name => uc($city),state_abbr=>uc
+($state)},{columns => [qw/zip_code/]})) {
        return $zip->get_column('zip_code');
    }

    return undef;
    return $self->single({city_name=>uc($city),state_abbr=>uc($state)}
+,{columns=>[qw/zip_code/]})->get_column('zip_code');
}

sub get_closest {
    my ($self, $zip_code, $miles) = @_;

    # First get the latitude and longititude for the given zip code
    if (my $zip = $self->single({zip_code => $zip_code})) {
        my $geo = Geo::Distance->new;
        my $locations = $geo->closest(
            dbh => $self->result_source->storage->dbh,
            table => 'zips',
            lon => $zip->longitude,
            lat => $zip->latitude,
            unit => 'mile',
            distance => $miles,
            lon_field => 'longitude',
            lat_field => 'latitude',
            'sort' => 1,
            fields => [qw/zip_code/],
        );
    
        my @zips;
        foreach my $result (@{$locations}) {
            push (@zips, $result->{zip_code});
        }
        return \@zips;
    }
    else {
        return undef;
    }
}

1;

[download]

In reply to MVC Catalyst Architecture - City, State Zip locator by ChristinaH

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