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1 | package Catalyst::Model::DBIC::Schema; |
2 | |
3 | use strict; |
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4 | use base qw/Catalyst::Model Class::Accessor::Fast Class::Data::Accessor/; |
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5 | use NEXT; |
6 | use UNIVERSAL::require; |
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7 | use UNIVERSAL qw/ can /; |
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8 | use Carp; |
9 | |
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10 | our $VERSION = '0.03'; |
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11 | |
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12 | __PACKAGE__->mk_classaccessor('composed_schema'); |
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13 | __PACKAGE__->mk_accessors('schema'); |
14 | |
15 | =head1 NAME |
16 | |
17 | Catalyst::Model::DBIC::Schema - DBIx::Class::Schema Model Class |
18 | |
19 | =head1 SYNOPSIS |
20 | |
21 | package MyApp::Model::Foo; |
22 | use strict; |
23 | use base 'Catalyst::Model::DBIC::Schema'; |
24 | |
25 | __PACKAGE__->config( |
26 | schema_class => 'Foo::SchemaClass', |
27 | connect_info => [ 'dbi:Pg:dbname=foodb', |
28 | 'postgres', |
29 | '', |
30 | { AutoCommit => 1 }, |
31 | ], |
32 | ); |
33 | |
34 | 1; |
35 | |
36 | # In controller code: |
37 | |
38 | # ->schema To access schema methods: |
39 | $c->model('Foo')->schema->source(...); |
40 | |
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41 | # certain ->schema methods (source, resultset, class) have shortcuts |
42 | $c->model('Foo')->source(...); |
43 | $c->model('Foo')->resultset(...); |
44 | $c->model('Foo')->class(...); |
45 | |
46 | # For resultsets, there's an even quicker shortcut: |
47 | $c->model('Foo::Bar') |
48 | # is the same as $c->model('Foo')->resultset('Bar') |
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49 | |
50 | # To get the composed schema for making new connections: |
51 | my $newconn = $c->model('Foo')->composed_schema->connect(...); |
52 | |
53 | # Or the same thing via a convenience shortcut: |
54 | my $newconn = $c->model('Foo')->connect(...); |
55 | |
56 | # or, if your schema works on different storage drivers: |
57 | my $newconn = $c->model('Foo')->composed_schema->clone(); |
58 | $newconn->storage_type('::LDAP'); |
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59 | $newconn->connection(...); |
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60 | |
61 | # and again, a convenience shortcut |
62 | my $newconn = $c->model('Foo')->clone(); |
63 | $newconn->storage_type('::LDAP'); |
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64 | $newconn->connection(...); |
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65 | |
66 | =head1 DESCRIPTION |
67 | |
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68 | This is a Catalyst Model for L<DBIx::Class::Schema>-based Models. See |
69 | the documentation for L<Catalyst::Helper::Model::DBIC::Schema> and |
70 | L<Catalyst::Helper::Model::DBIC::SchemaInlineLoader> for information |
71 | on generating these Models via Helper scripts. |
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72 | |
73 | =head1 CONFIG PARAMETERS |
74 | |
75 | =over 4 |
76 | |
77 | =item schema_class |
78 | |
79 | This is the classname of your L<DBIx::Class::Schema> Schema. It needs |
80 | to be findable in C<@INC>, but it does not need to be underneath |
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81 | C<Catalyst::Model::>. This parameter is required. |
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82 | |
83 | =item connect_info |
84 | |
85 | This is an arrayref of connection parameters, which are specific to your |
86 | C<storage_type>. For C<::DBI>, which is the only supported C<storage_type> |
87 | in L<DBIx::Class> at the time of this writing, the 4 parameters are your |
88 | dsn, username, password, and connect options hashref. |
89 | |
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90 | This is not required if C<schema_class> already has connection information |
91 | defined in itself (which would be the case for a Schema defined by |
92 | L<DBIx::Class::Schema::Loader>, for instance). |
93 | |
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94 | =item storage_type |
95 | |
96 | Allows the use of a different C<storage_type> than what is set in your |
97 | C<schema_class> (which in turn defaults to C<::DBI> if not set in current |
98 | L<DBIx::Class>). Completely optional, and probably unneccesary for most |
99 | people, until other storage backends become available for L<DBIx::Class>. |
100 | |
101 | =back |
102 | |
103 | =head1 METHODS |
104 | |
105 | =over 4 |
106 | |
107 | =item new |
108 | |
109 | Instantiates the Model based on the above-documented ->config parameters. |
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110 | The only required parameter is C<schema_class>. C<connect_info> is |
111 | required in the case that C<schema_class> does not already have connection |
112 | information defined for it. |
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113 | |
114 | =item schema |
115 | |
116 | Accessor which returns the connected schema being used by the this model. |
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117 | There are already direct shortcuts on the model class itself for |
118 | schema->resultset, schema->source, and schema->class. |
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119 | |
120 | =item composed_schema |
121 | |
122 | Accessor which returns the composed schema, which has no connection info, |
123 | which was used in constructing the C<schema> above. Useful for creating |
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124 | new connections based on the same schema/model. There are direct shortcuts |
125 | from the model object for composed_schema->clone and composed_schema->connect |
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126 | |
127 | =item clone |
128 | |
129 | Shortcut for ->composed_schema->clone |
130 | |
131 | =item connect |
132 | |
133 | Shortcut for ->composed_schema->connect |
134 | |
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135 | =item source |
136 | |
137 | Shortcut for ->schema->source |
138 | |
139 | =item class |
140 | |
141 | Shortcut for ->schema->class |
142 | |
143 | =item resultset |
144 | |
145 | Shortcut for ->schema->resultset |
146 | |
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147 | =back |
148 | |
149 | =cut |
150 | |
151 | sub new { |
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152 | my $self = shift->NEXT::new(@_); |
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153 | |
154 | my $class = ref($self); |
155 | my $model_name = $class; |
156 | $model_name =~ s/^[\w:]+::(?:Model|M):://; |
157 | |
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158 | croak "->config->{schema_class} must be defined for this model" |
159 | unless $self->{schema_class}; |
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160 | |
161 | my $schema_class = $self->{schema_class}; |
162 | |
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163 | # don't require if the class is already loaded... |
164 | if( !can($schema_class, 'source') ) { |
165 | $schema_class->require |
166 | or croak "Cannot load schema class '$schema_class': $@"; |
167 | } |
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168 | |
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169 | if( !$self->{connect_info} ) { |
170 | if($schema_class->storage && $schema_class->storage->connect_info) { |
171 | $self->{connect_info} = $schema_class->storage->connect_info; |
172 | } |
173 | else { |
174 | croak "Either ->config->{connect_info} must be defined for $class" |
175 | . " or $schema_class must have connection defined on it"; |
176 | } |
177 | } |
178 | |
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179 | $self->composed_schema($schema_class->compose_namespace($class)); |
180 | $self->schema($self->composed_schema->clone); |
181 | $self->schema->storage_type($self->{storage_type}) if $self->{storage_type}; |
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182 | $self->schema->connection(@{$self->{connect_info}}); |
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183 | |
184 | no strict 'refs'; |
185 | foreach my $moniker ($self->schema->sources) { |
186 | *{"${class}::${moniker}::ACCEPT_CONTEXT"} = sub { |
187 | shift; |
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188 | shift->model($model_name)->resultset($moniker); |
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189 | } |
190 | } |
191 | |
192 | return $self; |
193 | } |
194 | |
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195 | sub clone { shift->composed_schema->clone(@_); } |
196 | |
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197 | sub connect { shift->composed_schema->connect(@_); } |
198 | |
199 | =head1 SEE ALSO |
200 | |
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201 | General Catalyst Stuff: |
202 | |
203 | L<Catalyst::Manual>, L<Catalyst::Test>, L<Catalyst::Request>, |
204 | L<Catalyst::Response>, L<Catalyst::Helper>, L<Catalyst>, |
205 | |
206 | Stuff related to DBIC and this Model style: |
207 | |
208 | L<DBIx::Class>, L<DBIx::Class::Schema>, |
209 | L<DBIx::Class::Schema::Loader>, L<Catalyst::Helper::Model::DBIC::Schema>, |
210 | L<Catalyst::Helper::Model::DBIC::SchemaInlineLoader> |
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211 | |
212 | =head1 AUTHOR |
213 | |
214 | Brandon L Black, C<blblack@gmail.com> |
215 | |
216 | =head1 COPYRIGHT |
217 | |
218 | This program is free software, you can redistribute it and/or modify it |
219 | under the same terms as Perl itself. |
220 | |
221 | =cut |
222 | |
223 | 1; |