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1 | package Catalyst; |
2 | |
3 | use strict; |
ac733264 |
4 | use base 'Catalyst::Base'; |
fc7ec1d9 |
5 | use UNIVERSAL::require; |
6 | use Catalyst::Log; |
812a28c9 |
7 | use Catalyst::Utils; |
0f7ecc53 |
8 | use Text::ASCIITable; |
4f6748f1 |
9 | use Path::Class; |
367d15f8 |
10 | our $CATALYST_SCRIPT_GEN = 4; |
fc7ec1d9 |
11 | |
424b2705 |
12 | __PACKAGE__->mk_classdata($_) for qw/dispatcher engine log/; |
fc7ec1d9 |
13 | |
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14 | our $VERSION = '5.24'; |
fc7ec1d9 |
15 | our @ISA; |
16 | |
17 | =head1 NAME |
18 | |
19 | Catalyst - The Elegant MVC Web Application Framework |
20 | |
21 | =head1 SYNOPSIS |
22 | |
23 | # use the helper to start a new application |
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24 | catalyst.pl MyApp |
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25 | cd MyApp |
26 | |
27 | # add models, views, controllers |
d01df17d |
28 | script/create.pl model Something |
29 | script/create.pl view Stuff |
30 | script/create.pl controller Yada |
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31 | |
32 | # built in testserver |
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33 | script/server.pl |
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34 | |
35 | # command line interface |
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36 | script/test.pl /yada |
fc7ec1d9 |
37 | |
38 | |
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39 | use Catalyst; |
40 | |
41 | use Catalyst qw/My::Module My::OtherModule/; |
42 | |
43 | use Catalyst '-Debug'; |
44 | |
45 | use Catalyst qw/-Debug -Engine=CGI/; |
46 | |
5a8ed4fe |
47 | sub default : Private { $_[1]->res->output('Hello') } ); |
48 | |
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49 | sub index : Path('/index.html') { |
5a8ed4fe |
50 | my ( $self, $c ) = @_; |
51 | $c->res->output('Hello'); |
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52 | $c->forward('foo'); |
5a8ed4fe |
53 | } |
54 | |
064834ea |
55 | sub product : Regex('^product[_]*(\d*).html$') { |
5a8ed4fe |
56 | my ( $self, $c ) = @_; |
57 | $c->stash->{template} = 'product.tt'; |
58 | $c->stash->{product} = $c->req->snippets->[0]; |
59 | } |
fc7ec1d9 |
60 | |
3803e98f |
61 | See also L<Catalyst::Manual::Intro> |
62 | |
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63 | =head1 DESCRIPTION |
64 | |
65 | Catalyst is based upon L<Maypole>, which you should consider for smaller |
66 | projects. |
67 | |
68 | The key concept of Catalyst is DRY (Don't Repeat Yourself). |
69 | |
70 | See L<Catalyst::Manual> for more documentation. |
71 | |
23f9d934 |
72 | Catalyst plugins can be loaded by naming them as arguments to the "use Catalyst" statement. |
1985c30b |
73 | Omit the C<Catalyst::Plugin::> prefix from the plugin name, |
23f9d934 |
74 | so C<Catalyst::Plugin::My::Module> becomes C<My::Module>. |
fc7ec1d9 |
75 | |
76 | use Catalyst 'My::Module'; |
77 | |
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78 | Special flags like -Debug and -Engine can also be specifed as arguments when |
79 | Catalyst is loaded: |
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80 | |
81 | use Catalyst qw/-Debug My::Module/; |
82 | |
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83 | The position of plugins and flags in the chain is important, because they are |
84 | loaded in exactly the order that they appear. |
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85 | |
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86 | The following flags are supported: |
87 | |
88 | =over 4 |
89 | |
90 | =item -Debug |
91 | |
92 | enables debug output, i.e.: |
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93 | |
94 | use Catalyst '-Debug'; |
95 | |
23f9d934 |
96 | this is equivalent to: |
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97 | |
98 | use Catalyst; |
99 | sub debug { 1 } |
100 | |
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101 | =item -Engine |
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102 | |
103 | Force Catalyst to use a specific engine. |
23f9d934 |
104 | Omit the C<Catalyst::Engine::> prefix of the engine name, i.e.: |
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105 | |
106 | use Catalyst '-Engine=CGI'; |
107 | |
23f9d934 |
108 | =back |
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109 | |
23f9d934 |
110 | =head1 METHODS |
111 | |
112 | =over 4 |
113 | |
114 | =item debug |
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115 | |
116 | Overload to enable debug messages. |
117 | |
118 | =cut |
119 | |
120 | sub debug { 0 } |
121 | |
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122 | =item config |
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123 | |
124 | Returns a hashref containing your applications settings. |
125 | |
126 | =cut |
127 | |
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128 | sub import { |
129 | my ( $self, @options ) = @_; |
130 | my $caller = caller(0); |
131 | |
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132 | # Prepare inheritance |
22402712 |
133 | unless ( $caller->isa($self) ) { |
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134 | no strict 'refs'; |
22402712 |
135 | push @{"$caller\::ISA"}, $self; |
1c99e125 |
136 | } |
137 | |
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138 | if ( $caller->engine ) { |
42a57832 |
139 | return; # Catalyst is already initialized |
d96e14c2 |
140 | } |
141 | |
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142 | unless ( $caller->log ) { |
143 | $caller->log( Catalyst::Log->new ); |
fc7ec1d9 |
144 | } |
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145 | |
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146 | # Debug? |
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147 | if ( $ENV{CATALYST_DEBUG} || $ENV{ uc($caller) . '_DEBUG' } ) { |
148 | no strict 'refs'; |
149 | *{"$caller\::debug"} = sub { 1 }; |
150 | $caller->log->debug('Debug messages enabled'); |
151 | } |
152 | |
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153 | my $engine = 'Catalyst::Engine::CGI'; |
154 | my $dispatcher = 'Catalyst::Dispatcher'; |
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155 | |
156 | if ( $ENV{MOD_PERL} ) { |
157 | |
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158 | my ( $software, $version ) = $ENV{MOD_PERL} =~ /^(\S+)\/(\d+(?:[\.\_]\d+)+)/; |
159 | |
160 | $version =~ s/_//g; |
161 | $version =~ s/(\.[^.]+)\./$1/g; |
162 | |
163 | if ( $software eq 'mod_perl') { |
164 | |
165 | if ( $version >= 1.99922 ) { |
166 | |
167 | $engine = 'Catalyst::Engine::Apache::MP20'; |
168 | |
169 | if ( Apache2::Request->require ) { |
566ee5d7 |
170 | $engine = 'Catalyst::Engine::Apache::MP20::Apreq'; |
316bf0f0 |
171 | } |
172 | } |
173 | |
174 | elsif ( $version >= 1.9901 ) { |
175 | |
176 | $engine = 'Catalyst::Engine::Apache::MP19'; |
177 | |
178 | if ( Apache::Request->require ) { |
566ee5d7 |
179 | $engine = 'Catalyst::Engine::Apache::MP19::Apreq'; |
316bf0f0 |
180 | } |
181 | } |
182 | |
183 | elsif ( $version >= 1.24 ) { |
184 | |
185 | $engine = 'Catalyst::Engine::Apache::MP13'; |
186 | |
187 | if ( Apache::Request->require ) { |
566ee5d7 |
188 | $engine = 'Catalyst::Engine::Apache::MP13::Apreq'; |
316bf0f0 |
189 | } |
190 | } |
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191 | |
316bf0f0 |
192 | else { |
193 | die( qq/Unsupported mod_perl version: $ENV{MOD_PERL}/ ); |
194 | } |
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195 | } |
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196 | |
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197 | elsif ( $software eq 'Zeus-Perl' ) { |
198 | $engine = 'Catalyst::Engine::Zeus'; |
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199 | } |
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200 | |
201 | else { |
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202 | die( qq/Unsupported mod_perl: $ENV{MOD_PERL}/ ); |
d837e1a7 |
203 | } |
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204 | } |
1985c30b |
205 | |
300aea89 |
206 | $caller->log->info( "You are running an old helper script! " |
207 | . "Please update your scripts by regenerating the " |
208 | . "application and copying over the new scripts." ) |
209 | if ( $ENV{CATALYST_SCRIPT_GEN} |
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210 | && ( $ENV{CATALYST_SCRIPT_GEN} < $CATALYST_SCRIPT_GEN ) ); |
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211 | |
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212 | # Process options |
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213 | my @plugins; |
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214 | foreach (@options) { |
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215 | |
fc7ec1d9 |
216 | if (/^\-Debug$/) { |
1985c30b |
217 | next if $caller->debug; |
fc7ec1d9 |
218 | no strict 'refs'; |
1c99e125 |
219 | *{"$caller\::debug"} = sub { 1 }; |
fc7ec1d9 |
220 | $caller->log->debug('Debug messages enabled'); |
221 | } |
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222 | |
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223 | elsif (/^-Dispatcher=(.*)$/) { |
224 | $dispatcher = "Catalyst::Dispatcher::$1"; |
225 | } |
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226 | |
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227 | elsif (/^-Engine=(.*)$/) { $engine = "Catalyst::Engine::$1" } |
228 | elsif (/^-.*$/) { $caller->log->error(qq/Unknown flag "$_"/) } |
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229 | |
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230 | else { |
231 | my $plugin = "Catalyst::Plugin::$_"; |
232 | |
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233 | $plugin->require; |
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234 | |
f88238ea |
235 | if ($@) { die qq/Couldn't load plugin "$plugin", "$@"/ } |
fc7ec1d9 |
236 | else { |
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237 | push @plugins, $plugin; |
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238 | no strict 'refs'; |
239 | push @{"$caller\::ISA"}, $plugin; |
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240 | } |
241 | } |
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242 | |
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243 | } |
99fe1710 |
244 | |
245 | # Plugin table |
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246 | my $t = Text::ASCIITable->new( { hide_HeadRow => 1, hide_HeadLine => 1 } ); |
0f7ecc53 |
247 | $t->setCols('Class'); |
0822f9a4 |
248 | $t->setColWidth( 'Class', 75, 1 ); |
cd677e12 |
249 | $t->addRow($_) for @plugins; |
0f7ecc53 |
250 | $caller->log->debug( 'Loaded plugins', $t->draw ) |
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251 | if ( @plugins && $caller->debug ); |
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252 | |
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253 | # Dispatcher |
254 | $dispatcher = "Catalyst::Dispatcher::$ENV{CATALYST_DISPATCHER}" |
255 | if $ENV{CATALYST_DISPATCHER}; |
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256 | my $appdis = $ENV{ uc($caller) . '_DISPATCHER' }; |
257 | $dispatcher = "Catalyst::Dispatcher::$appdis" if $appdis; |
424b2705 |
258 | |
259 | $dispatcher->require; |
260 | die qq/Couldn't load dispatcher "$dispatcher", "$@"/ if $@; |
261 | { |
262 | no strict 'refs'; |
263 | push @{"$caller\::ISA"}, $dispatcher; |
264 | } |
265 | $caller->dispatcher($dispatcher); |
266 | $caller->log->debug(qq/Loaded dispatcher "$dispatcher"/) if $caller->debug; |
267 | |
e8bf1b2d |
268 | # Engine |
269 | $engine = "Catalyst::Engine::$ENV{CATALYST_ENGINE}" |
270 | if $ENV{CATALYST_ENGINE}; |
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271 | my $appeng = $ENV{ uc($caller) . '_ENGINE' }; |
272 | $engine = "Catalyst::Engine::$appeng" if $appeng; |
e8bf1b2d |
273 | |
274 | $engine->require; |
275 | die qq/Couldn't load engine "$engine", "$@"/ if $@; |
d837e1a7 |
276 | |
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277 | { |
278 | no strict 'refs'; |
279 | push @{"$caller\::ISA"}, $engine; |
280 | } |
d837e1a7 |
281 | |
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282 | $caller->engine($engine); |
283 | $caller->log->debug(qq/Loaded engine "$engine"/) if $caller->debug; |
4f6748f1 |
284 | |
285 | # Find home |
812a28c9 |
286 | my $home = Catalyst::Utils::home($caller); |
895b2303 |
287 | |
288 | if ( my $h = $ENV{CATALYST_HOME} ) { |
289 | |
290 | $home = $h if -d $h; |
291 | |
292 | unless ( -e _ ) { |
293 | $caller->log->warn(qq/CATALYST_HOME does not exist "$h"/); |
294 | } |
295 | |
296 | unless ( -e _ && -d _ ) { |
297 | $caller->log->warn(qq/CATALYST_HOME is not a directory "$h"/); |
298 | } |
299 | } |
300 | |
301 | if ( my $h = $ENV{ uc($caller) . '_HOME' } ) { |
302 | |
303 | $home = $h if -d $h; |
304 | |
305 | unless ( -e _ ) { |
306 | my $e = uc($caller) . '_HOME'; |
307 | $caller->log->warn(qq/$e does not exist "$h"/) |
308 | } |
309 | |
310 | unless ( -e _ && -d _ ) { |
311 | my $e = uc($caller) . '_HOME'; |
312 | $caller->log->warn(qq/$e is not a directory "$h"/); |
313 | } |
314 | } |
c571e72b |
315 | |
4f6748f1 |
316 | if ( $caller->debug ) { |
317 | $home |
318 | ? ( -d $home ) |
319 | ? $caller->log->debug(qq/Found home "$home"/) |
320 | : $caller->log->debug(qq/Home "$home" doesn't exist/) |
321 | : $caller->log->debug(q/Couldn't find home/); |
322 | } |
75aeff23 |
323 | $caller->config->{home} = $home || ''; |
324 | $caller->config->{root} = defined $home ? dir($home)->subdir('root') : ''; |
fc7ec1d9 |
325 | } |
326 | |
70cb38f0 |
327 | =item $c->engine |
328 | |
329 | Contains the engine class. |
330 | |
145074c2 |
331 | =item $c->log |
332 | |
333 | Contains the logging object. Unless it is already set Catalyst sets this up with a |
334 | C<Catalyst::Log> object. To use your own log class: |
335 | |
336 | $c->log( MyLogger->new ); |
337 | $c->log->info("now logging with my own logger!"); |
338 | |
339 | Your log class should implement the methods described in the C<Catalyst::Log> |
340 | man page. |
341 | |
87232381 |
342 | =item $c->plugin( $name, $class, @args ) |
343 | |
344 | Instant plugins for Catalyst. |
345 | Classdata accessor/mutator will be created, class loaded and instantiated. |
346 | |
347 | MyApp->plugin( 'prototype', 'HTML::Prototype' ); |
348 | |
349 | $c->prototype->define_javascript_functions; |
350 | |
351 | =cut |
352 | |
353 | sub plugin { |
354 | my ( $class, $name, $plugin, @args ) = @_; |
355 | $plugin->require; |
356 | my $error = $UNIVERSAL::require::ERROR; |
357 | die qq/Couldn't load instant plugin "$plugin", "$error"/ if $error; |
358 | eval { $plugin->import }; |
359 | $class->mk_classdata($name); |
360 | my $obj; |
361 | eval { $obj = $plugin->new(@args) }; |
362 | die qq/Couldn't instantiate instant plugin "$plugin", "$@"/ if $@; |
363 | $class->$name($obj); |
364 | $class->log->debug(qq/Initialized instant plugin "$plugin" as "$name"/) |
365 | if $class->debug; |
366 | } |
145074c2 |
367 | |
23f9d934 |
368 | =back |
369 | |
d1a31ac6 |
370 | =head1 LIMITATIONS |
371 | |
b2b7d352 |
372 | mod_perl2 support is considered experimental and may contain bugs. |
d1a31ac6 |
373 | |
3cb1db8c |
374 | =head1 SUPPORT |
375 | |
376 | IRC: |
377 | |
378 | Join #catalyst on irc.perl.org. |
379 | |
380 | Mailing-Lists: |
381 | |
382 | http://lists.rawmode.org/mailman/listinfo/catalyst |
383 | http://lists.rawmode.org/mailman/listinfo/catalyst-dev |
1985c30b |
384 | |
432d507d |
385 | Web: |
386 | |
387 | http://catalyst.perl.org |
388 | |
fc7ec1d9 |
389 | =head1 SEE ALSO |
390 | |
61b1e958 |
391 | =over 4 |
392 | |
393 | =item L<Catalyst::Manual> - The Catalyst Manual |
394 | |
395 | =item L<Catalyst::Engine> - Core Engine |
396 | |
397 | =item L<Catalyst::Log> - The Log Class. |
398 | |
399 | =item L<Catalyst::Request> - The Request Object |
400 | |
401 | =item L<Catalyst::Response> - The Response Object |
402 | |
403 | =item L<Catalyst::Test> - The test suite. |
404 | |
405 | =back |
fc7ec1d9 |
406 | |
407 | =head1 AUTHOR |
408 | |
409 | Sebastian Riedel, C<sri@oook.de> |
410 | |
411 | =head1 THANK YOU |
412 | |
84cf74e7 |
413 | Andy Grundman, Andrew Ford, Andrew Ruthven, Autrijus Tang, Christian Hansen, |
ce2b098c |
414 | Christopher Hicks, Dan Sully, Danijel Milicevic, David Naughton, |
75aeff23 |
415 | Gary Ashton Jones, Geoff Richards, Jesse Sheidlower, Jody Belka, |
9cee9588 |
416 | Johan Lindstrom, Juan Camacho, Leon Brocard, Marcus Ramberg, |
417 | Tatsuhiko Miyagawa and all the others who've helped. |
fc7ec1d9 |
418 | |
419 | =head1 LICENSE |
420 | |
421 | This library is free software . You can redistribute it and/or modify it under |
422 | the same terms as perl itself. |
423 | |
424 | =cut |
425 | |
426 | 1; |