NAME
Mojo::Base - Minimal base class for Mojo projects
SYNOPSIS
package Cat;
use Mojo::Base -base;
has name => 'Nyan';
has [qw(ears eyes)] => 2;
package Tiger;
use Mojo::Base 'Cat';
has friend => sub { Cat->new };
has stripes => 42;
package main;
use Mojo::Base -strict;
my $mew = Cat->new(name => 'Longcat');
say $mew->ears;
say $mew->ears(3)->eyes(4)->ears;
my $rawr = Tiger->new(stripes => 23);
say $rawr->tap(sub { $_->friend->name('Tacgnol') })->ears;DESCRIPTION
Mojo::Base is a simple base class for Mojo projects.
# Automatically enables "strict", "warnings" and Perl 5.10 features
use Mojo::Base -strict;
use Mojo::Base -base;
use Mojo::Base 'SomeBaseClass';All three forms save a lot of typing.
# use Mojo::Base -strict;
use strict;
use warnings;
use feature ':5.10';
use IO::Handle ();
# use Mojo::Base -base;
use strict;
use warnings;
use feature ':5.10';
use IO::Handle ();
use Mojo::Base;
push @ISA, 'Mojo::Base';
sub has { Mojo::Base::attr(__PACKAGE__, @_) }
# use Mojo::Base 'SomeBaseClass';
use strict;
use warnings;
use feature ':5.10';
use IO::Handle ();
require SomeBaseClass;
push @ISA, 'SomeBaseClass';
use Mojo::Base;
sub has { Mojo::Base::attr(__PACKAGE__, @_) }FUNCTIONS
Mojo::Base exports the following functions if imported with the -base flag or a base class.
has
has 'name';
has [qw(name1 name2 name3)];
has name => 'foo';
has name => sub {...};
has [qw(name1 name2 name3)] => 'foo';
has [qw(name1 name2 name3)] => sub {...};Create attributes for hash-based objects, just like the attr method.
METHODS
Mojo::Base implements the following methods.
new
my $object = BaseSubClass->new;
my $object = BaseSubClass->new(name => 'value');
my $object = BaseSubClass->new({name => 'value'});This base class provides a basic constructor for hash-based objects. You can pass it either a hash or a hash reference with attribute values.
attr
$object->attr('name');
BaseSubClass->attr('name');
BaseSubClass->attr([qw(name1 name2 name3)]);
BaseSubClass->attr(name => 'foo');
BaseSubClass->attr(name => sub {...});
BaseSubClass->attr([qw(name1 name2 name3)] => 'foo');
BaseSubClass->attr([qw(name1 name2 name3)] => sub {...});Create attribute accessor for hash-based objects, an array reference can be used to create more than one at a time. Pass an optional second argument to set a default value, it should be a constant or a callback. The callback will be excuted at accessor read time if there's no set value. Accessors can be chained, that means they return their invocant when they are called with an argument.
tap
$object = $object->tap(sub {...});K combinator, tap into a method chain to perform operations on an object within the chain.
DEBUGGING
You can set the MOJO_BASE_DEBUG environment variable to get some advanced diagnostics information printed to STDERR.
MOJO_BASE_DEBUG=1