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NAME

Dancer2::Plugin::Pg - PostgreSQL connection for Dancer2

SYNOPSIS

use Dancer2;
use Dancer2::Plugin::Pg;

my $sth = Pg->query('INSERT INTO table (bar, baz) VALUES (?, ?) RETURNING foo', 'value_bar', 'value_baz');
print $sth->fetch->[0];

CONFIGURATION

plugins:
    Pg:
        host: 'localhost'
        port: '5432'
        base: 'database'
        username: 'postges'
        password: ''
        options:
            AutoCommit: 1
            AutoInactiveDestroy: 1
            PrintError: 0
            RaiseError: 1
        

Or connections

plugins:
    Pg:
        connections:
            default:
                host: 'localhost'
                port: '5432'
                base: 'database1'
                username: 'postges'
                password: ''
            foo:
                host: 'localhost'
                port: '5432'
                base: 'database2'
                username: 'postges'
                password: ''

default:

my $pg = Pg;

foo:

my $pg = Pg('foo');

METHODS

dbh

Return reference connection of DBI

my $dbh = Pg->dbh;
$dbh->do(
   q{
       CREATE TABLE table (
          id SERIAL,
          name VARCHAR(50) NOT NULL,
          PRIMARY KEY(id)
       );
   }
);

query

Method query is main, can be executed insert, update, delete and select.

my $sth = Pg->query('SELECT * FROM table WHERE id = ?', 7);
while (my @row = $sth->fetchrow_array) {
   print "@row\n";
}

selectOne

Method return only column.

my $total = Pg->selectOne('SELECT COUNT(*) FROM table');
print $total;

selectRow

Method return row of data fetched.

my $row = Pg->selectRow('SELECT bar, foo FROM table WHERE id = ?', 7);
print $row->{bar}, $row->{foo};
 

selectAll

Method return all rows of data fetched.

my $all = Pg->selectAll('SELECT bar, foo FROM table');
while(my $row = $all){
    print $row->{bar}, $row->{foo};
}

lastInsertID

Method return last insert id

my $id = Pg->lastInsertID('table', 'column');

column

Method used with methods: insert, update and delete.

my $pg = Pg;
$pg->table('foo');
$pg->column('id', 1);
$pg->column('name', 'bar');
$pg->insert;

insert

Method generate SQL and use method query to insert into database.

my $pg = Pg;
$pg->table('foo');
$pg->column('name', 'bar');
$pg->column('age', 7);
$pg->returning('id, name'); # method RETURNING PostgreSQL
my $result = $pg->insert;
print $result->{id}, $result->{name};

update

Method generate SQL and use method query to update into database.

my $pg = Pg;
$pg->table('foo');
$pg->column('name', 'bar');
$pg->column('age', {'+=' => 1});
$pg->returning('id, name'); # method RETURNING PostgreSQL
my $result = $pg->update(id => 1);
print $result->{id}, $result->{name};

delete

Method generate SQL and use method query to delete into database.

my $pg = Pg;
$pg->table('foo');
$pg->returning('*'); # method RETURNING PostgreSQL
my $result = $pg->delete(OR => {age => {'>' => 5}, name => {'LIKE' => '%foo%'}}); # WHERE age > 5 OR name LIKE '%foo%'
print $result->{foo};

AUTHOR

Lucas Moraes, <lucastiagodemoraes@gmail.com>

LICENSE AND COPYRIGHT

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.

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