| Commit | Line | Data |
|---|
| e2a5f2c6 |
1 | #!/usr/bin/perl |
| 2 | |
| 3 | use strict; |
| 4 | use warnings; |
| 5 | |
| d9a8643f |
6 | use Test::More tests => 3; |
| e2a5f2c6 |
7 | use Test::Exception; |
| 8 | |
| 9 | BEGIN { |
| 10 | use_ok('Moose'); |
| 11 | } |
| 12 | |
| 13 | ## attribute trait example |
| 14 | { |
| 15 | |
| 16 | package MyApp::Meta::Attribute::Trait::Labeled; |
| 17 | use Moose::Role; |
| 18 | |
| 19 | has label => ( |
| 20 | is => 'rw', |
| 21 | isa => 'Str', |
| 22 | predicate => 'has_label', |
| 23 | ); |
| 24 | |
| 25 | package Moose::Meta::Attribute::Custom::Trait::Labeled; |
| 26 | sub register_implementation { 'MyApp::Meta::Attribute::Trait::Labeled' } |
| 27 | |
| 28 | package MyApp::Website; |
| 29 | use Moose; |
| 30 | |
| 31 | has url => ( |
| 32 | traits => [qw/Labeled/], |
| 33 | isa => 'Str', |
| 34 | is => 'rw', |
| 35 | label => "The site's URL", |
| 36 | ); |
| 37 | |
| 38 | has name => ( |
| 39 | is => 'rw', |
| 40 | isa => 'Str', |
| 41 | ); |
| 42 | |
| 43 | sub dump { |
| 44 | my $self = shift; |
| 45 | |
| 46 | my $dump_value = ''; |
| 47 | |
| 48 | # iterate over all the attributes in $self |
| 49 | my %attributes = %{ $self->meta->get_attribute_map }; |
| 50 | foreach my $name (sort keys %attributes) { |
| 51 | |
| 52 | my $attribute = $attributes{$name}; |
| 53 | |
| 54 | # print the label if available |
| 55 | if ($attribute->does('MyApp::Meta::Attribute::Trait::Labeled') |
| 56 | && $attribute->has_label) { |
| 57 | $dump_value .= $attribute->label; |
| 58 | } |
| 59 | # otherwise print the name |
| 60 | else { |
| 61 | $dump_value .= $name; |
| 62 | } |
| 63 | |
| 64 | # print the attribute's value |
| 65 | my $reader = $attribute->get_read_method; |
| 66 | $dump_value .= ": " . $self->$reader . "\n"; |
| 67 | } |
| 68 | |
| 69 | return $dump_value; |
| 70 | } |
| 71 | |
| 72 | } |
| 73 | |
| 74 | my $app = MyApp::Website->new(url => "http://google.com", name => "Google"); |
| 75 | is($app->dump, q{name: Google |
| 76 | The site's URL: http://google.com |
| 77 | }, '... got the expected dump value'); |
| 78 | |
| d9a8643f |
79 | # using the trait directly in a regular metaclass |
| 80 | { |
| 81 | package MyApp::Meta::Attribute::Labeled; |
| 82 | use Moose; |
| 83 | extends 'Moose::Meta::Attribute'; |
| 84 | with 'MyApp::Meta::Attribute::Trait::Labeled'; |
| 85 | |
| 86 | package Moose::Meta::Attribute::Custom::Labeled; |
| 87 | sub register_implementation { 'MyApp::Meta::Attribute::Labeled' } |
| 88 | |
| 89 | package MyApp::Website2; |
| 90 | use Moose; |
| 91 | |
| 92 | has url => ( |
| 93 | metaclass => 'Labeled', |
| 94 | isa => 'Str', |
| 95 | is => 'rw', |
| 96 | label => "The site's URL", |
| 97 | ); |
| 98 | |
| 99 | has name => ( |
| 100 | is => 'rw', |
| 101 | isa => 'Str', |
| 102 | ); |
| 103 | |
| 104 | sub dump { |
| 105 | my $self = shift; |
| e2a5f2c6 |
106 | |
| d9a8643f |
107 | my $dump_value = ''; |
| 108 | |
| 109 | # iterate over all the attributes in $self |
| 110 | my %attributes = %{ $self->meta->get_attribute_map }; |
| 111 | foreach my $name (sort keys %attributes) { |
| 112 | |
| 113 | my $attribute = $attributes{$name}; |
| 114 | |
| 115 | # print the label if available |
| 116 | if ($attribute->isa('MyApp::Meta::Attribute::Labeled') |
| 117 | && $attribute->has_label) { |
| 118 | $dump_value .= $attribute->label; |
| 119 | } |
| 120 | # otherwise print the name |
| 121 | else { |
| 122 | $dump_value .= $name; |
| 123 | } |
| 124 | |
| 125 | # print the attribute's value |
| 126 | my $reader = $attribute->get_read_method; |
| 127 | $dump_value .= ": " . $self->$reader . "\n"; |
| 128 | } |
| 129 | |
| 130 | return $dump_value; |
| 131 | } |
| 132 | |
| 133 | } |
| 134 | |
| 135 | my $app2 = MyApp::Website2->new(url => "http://google.com", name => "Google"); |
| 136 | is($app2->dump, q{name: Google |
| 137 | The site's URL: http://google.com |
| 138 | }, '... got the expected dump value'); |
| e2a5f2c6 |
139 | |
projects / gitmo/Moose.git / blame