Commit | Line | Data |
ad91060a |
1 | package Catalyst::Model::DBIC::Schema; |
2 | |
3 | use strict; |
4 | use base qw/Catalyst::Base Class::Accessor::Fast Class::Data::Accessor/; |
5 | use NEXT; |
6 | use UNIVERSAL::require; |
7 | use Carp; |
8 | |
9 | our $VERSION = '0.01'; |
10 | |
11 | __PACKAGE__->mk_classdata('composed_schema'); |
12 | __PACKAGE__->mk_accessors('schema'); |
13 | |
14 | =head1 NAME |
15 | |
16 | Catalyst::Model::DBIC::Schema - DBIx::Class::Schema Model Class |
17 | |
18 | =head1 SYNOPSIS |
19 | |
20 | package MyApp::Model::Foo; |
21 | use strict; |
22 | use base 'Catalyst::Model::DBIC::Schema'; |
23 | |
24 | __PACKAGE__->config( |
25 | schema_class => 'Foo::SchemaClass', |
26 | connect_info => [ 'dbi:Pg:dbname=foodb', |
27 | 'postgres', |
28 | '', |
29 | { AutoCommit => 1 }, |
30 | ], |
31 | ); |
32 | |
33 | 1; |
34 | |
35 | # In controller code: |
36 | |
37 | # ->schema To access schema methods: |
38 | $c->model('Foo')->schema->source(...); |
39 | |
40 | # Shortcut to the schema resultset monikers for ->search et al: |
41 | $c->model('Foo::Bar')->search(...); |
42 | # is the same as $c->model('Foo')->schema->resultset('Bar')->search(...); |
43 | |
44 | # To get the composed schema for making new connections: |
45 | my $newconn = $c->model('Foo')->composed_schema->connect(...); |
46 | |
47 | # Or the same thing via a convenience shortcut: |
48 | my $newconn = $c->model('Foo')->connect(...); |
49 | |
50 | # or, if your schema works on different storage drivers: |
51 | my $newconn = $c->model('Foo')->composed_schema->clone(); |
52 | $newconn->storage_type('::LDAP'); |
53 | $newconn->connect(...); |
54 | |
55 | # and again, a convenience shortcut |
56 | my $newconn = $c->model('Foo')->clone(); |
57 | $newconn->storage_type('::LDAP'); |
58 | $newconn->connect(...); |
59 | |
60 | =head1 DESCRIPTION |
61 | |
62 | This is a Catalyst Model for L<DBIx::Class::Schema>-based Models. |
63 | |
64 | =head1 CONFIG PARAMETERS |
65 | |
66 | =over 4 |
67 | |
68 | =item schema_class |
69 | |
70 | This is the classname of your L<DBIx::Class::Schema> Schema. It needs |
71 | to be findable in C<@INC>, but it does not need to be underneath |
72 | C<Catalyst::Model::>. |
73 | |
74 | =item connect_info |
75 | |
76 | This is an arrayref of connection parameters, which are specific to your |
77 | C<storage_type>. For C<::DBI>, which is the only supported C<storage_type> |
78 | in L<DBIx::Class> at the time of this writing, the 4 parameters are your |
79 | dsn, username, password, and connect options hashref. |
80 | |
81 | =item storage_type |
82 | |
83 | Allows the use of a different C<storage_type> than what is set in your |
84 | C<schema_class> (which in turn defaults to C<::DBI> if not set in current |
85 | L<DBIx::Class>). Completely optional, and probably unneccesary for most |
86 | people, until other storage backends become available for L<DBIx::Class>. |
87 | |
88 | =back |
89 | |
90 | =head1 METHODS |
91 | |
92 | =over 4 |
93 | |
94 | =item new |
95 | |
96 | Instantiates the Model based on the above-documented ->config parameters. |
97 | |
98 | =item schema |
99 | |
100 | Accessor which returns the connected schema being used by the this model. |
101 | |
102 | =item composed_schema |
103 | |
104 | Accessor which returns the composed schema, which has no connection info, |
105 | which was used in constructing the C<schema> above. Useful for creating |
106 | new connections based on the same schema/model. |
107 | |
108 | =item clone |
109 | |
110 | Shortcut for ->composed_schema->clone |
111 | |
112 | =item connect |
113 | |
114 | Shortcut for ->composed_schema->connect |
115 | |
116 | =back |
117 | |
118 | =cut |
119 | |
120 | sub new { |
121 | my ( $self, $c ) = @_; |
122 | $self = $self->NEXT::new($c); |
123 | |
124 | my $class = ref($self); |
125 | my $model_name = $class; |
126 | $model_name =~ s/^[\w:]+::(?:Model|M):://; |
127 | |
128 | foreach (qw/ connect_info schema_class /) { |
129 | croak "->config->{$_} must be defined for this model" |
130 | unless $self->{$_}; |
131 | } |
132 | |
133 | my $schema_class = $self->{schema_class}; |
134 | |
135 | $schema_class->require |
136 | or croak "Cannot load schema class '$schema_class': $@"; |
137 | |
138 | $self->composed_schema($schema_class->compose_namespace($class)); |
139 | $self->schema($self->composed_schema->clone); |
140 | $self->schema->storage_type($self->{storage_type}) if $self->{storage_type}; |
141 | $self->schema->connect(@{$self->{connect_info}}); |
142 | |
143 | no strict 'refs'; |
144 | foreach my $moniker ($self->schema->sources) { |
145 | *{"${class}::${moniker}::ACCEPT_CONTEXT"} = sub { |
146 | shift; |
147 | shift->model($model_name)->schema->resultset($moniker); |
148 | } |
149 | } |
150 | |
151 | return $self; |
152 | } |
153 | |
154 | # convenience method |
155 | sub clone { shift->composed_schema->clone(@_); } |
156 | |
157 | # convenience method |
158 | sub connect { shift->composed_schema->connect(@_); } |
159 | |
160 | =head1 SEE ALSO |
161 | |
162 | L<Catalyst>, L<DBIx::Class>, L<DBIx::Class::Schema>, |
163 | L<DBIx::Class::Schema::Loader> |
164 | |
165 | =head1 AUTHOR |
166 | |
167 | Brandon L Black, C<blblack@gmail.com> |
168 | |
169 | =head1 COPYRIGHT |
170 | |
171 | This program is free software, you can redistribute it and/or modify it |
172 | under the same terms as Perl itself. |
173 | |
174 | =cut |
175 | |
176 | 1; |