NAME

Mongoose - MongoDB document to Moose object mapper

VERSION

version 0.23

SYNOPSIS

package Person;
use Moose;
with 'Mongoose::Document';
has 'name' => ( is => 'rw', isa => 'Str' );

package main;
use Mongoose;

Mongoose->db('mydb');
my $person = Person->new( name => 'Jack' );
$person->save;

my $person = Person->find_one( { name => 'Jack' } );
say $person->name;    # Jack

my $cursor = Person->find( { name => 'Jack' } );
die "Not found" unless defined $cursor;
while ( my $person = $cursor->next ) {
    say "You're " . $person->name;
}

$person->delete;

DESCRIPTION

This is a MongoDB to Moose object mapper. This module allows you to use the full power of MongoDB within your Moose classes, without sacrificing MongoDB's power, flexibility and speed.

It's loosely inspired by Ruby's MongoMapper, which is in turn loosely based on the ActiveRecord pattern.

Start by reading the introduction Mongoose::Intro.

Or proceed directly to the Mongoose::Cookbook for many day-to-day recipes.

METHODS

db

Sets the current MongoDB connection and/or db name.

Mongoose->db( 'mydb' );

The connection defaults to whatever MongoDB defaults are (typically localhost:27017).

For more control over the connection, db takes the same parameters as MongoDB::MongoClient, plus db_name.

my $db = Mongoose->db(
    host          => 'mongodb://localhost:27017',
    query_timeout => 60,
    db_name       => 'mydb'
);

This will, in turn, instantiate a MongoDB::MongoClient instance with all given parameters and return a MongoDB::Database object.

Important: Mongoose will always defer connecting to Mongo until the last possible moment. This is done to prevent using the MongoDB driver in a forked environment (ie. with a prefork appserver like Starman, Hypnotoad or Catalyst's HTTP::Prefork).

If you prefer to connect while setting the connection string, use one of these options:

Mongoose->db( db_name=>'mydb', -now=>1 );  # connect now

# or by wating for a return value

my $db = Mongoose->db( 'mydb' );

# or explicitly:

Mongoose->db( 'mydb' );
Mongoose->connect;

You can separate your classes storage on multiple hosts/databases by calling db() several times:

# Default host/database (connect now!)
my $db = Mongoose->db( 'mydb' );

# Other database for some class (defer connection)
Mongoose->db( db_name => 'my_other_db', class => 'Log' );

# Other database on other host for several classes
Mongoose->db( 
    db_name => 'my_remote_db', 
    host    => 'mongodb://192.168.1.23:27017',
    class   => [qw/ Author Post /]
);

connect

Connects to Mongo using the connection arguments passed to the db method.

load_schema

Uses Module::Pluggable to require all modules under a given search path or search dir.

All arguments will be sent to Module::Pluggable's import, except for Mongoose specific ones.

package main;
use Mongoose;

# to load a schema from a namespace path:
Mongoose->load_schema( search_path=>'MyApp::Schema' );

This method can be used to shorten class names, aliasing them for convenience if you wish:

Mongoose->load_schema( search_path=>'MyApp::Schema', shorten=>1 );

Will shorten the module name to it's last bit:

MyApp::Schema::Author->new( ... );

# becomes

Author->new( ... );

naming

By default, Mongoose composes the Mongo collection name from your package name by replacing double-colon :: with underscores _, separating camel-case, such as aB with a_b and uppercase with lowercase letters.

This method let's you change this behaviour, by setting the collection naming routine with a closure.

The closure receives the package name as first parameter and should return the collection name.

# let me change the naming strategy
#  for my mongo collections
#  to plain lowercase

Mongoose->naming( sub { lc(shift) } );

# if you prefer, use a predefined naming template

Mongoose->naming( 'plural' );  # my favorite

# or combine them 

Mongoose->naming( ['decamel','plural' ] );  # same as 'shorties'

Here are the templates available:

template     | package name             |  collection
    --------------+--------------------------+---------------------------
short        | MyApp::Schema::FooBar    |  foobar
plural       | MyApp::Schema::FooBar    |  foobars
decamel      | MyApp::Schema::FooBar    |  foo_bar
lower        | MyApp::Schema::FooBar    |  myapp::schema::author
upper        | MyApp::Schema::FooBar    |  MYAPP::SCHEMA::AUTHOR
undercolon   | MyApp::Schema::FooBar    |  myapp_schema_foobar
default      | MyApp::Schema::FooBar    |  myapp_schema_foo_bar
none         | MyApp::Schema::Author    |  MyApp::Schema::Author

BTW, you can just use the full package name (template none) as a collection in Mongo, as it won't complain about colons in the collection name.

connection

Sets/returns the current connection object, of class MongoDB::MongoClient.

Defaults to whatever MongoDB defaults.

disconnect

Unsets the Mongoose connection handler.

REPOSITORY

Fork me on github: http://github.com/rodrigolive/mongoose

BUGS

This is a WIP, now *beta* quality software.

Report bugs via Github Issue reporting https://github.com/rodrigolive/mongoose/issues. Test cases highly desired and appreciated.

TODO

* Better error control

* Finish-up multiple database support

* Allow query->fields to control which fields get expanded into the object.

* Cleanup internals.

* More tests and use cases.

* Better documentation.

SEE ALSO

KiokuDB

AUTHOR

Rodrigo de Oliveira (rodrigolive), C<[email protected]>

CONTRIBUTORS

Arthur Wolf
Solli Moreira Honorio (shonorio)
Michael Gentili (gentili)
Kang-min Liu (gugod)
Allan Whiteford (allanwhiteford)
Kartik Thakore (kthakore)
David Golden (dagolden)
Diego Kuperman (diegok)

LICENSE

This library is free software. You can redistribute it and/or modify it under the same terms as Perl itself.