use strict;
use warnings FATAL => 'all';
+use 5.008;
+
+our $VERSION = '0.002';
sub setup_all_strictures {
strict->import;
=head1 WARNING
-This is really quite new. If you're reading this from git, it means it's
-really really new and we're still playing with things. If you're reading
-this on CPAN, it means the stuff that's here we're probably happy with. But
-only probably. So we may have to change stuff.
+This is really quite new. If you're reading this on CPAN, it means the stuff
+that's here we're probably happy with. But only probably. So we may have to
+change stuff. And if you're reading this from git, come check with irc.perl.org
+#web-simple that we're actually sure we're going to keep anything that's
+different from the CPAN version.
-If we do find we have to change stuff we'll add a section explaining how to
-switch your code across to the new version, and we'll do our best to make it
-as painless as possible because we've got Web::Simple applications too. But
-we can't promise not to change things at all. Not yet. Sorry.
+If we do find we have to change stuff we'll add to the
+L<CHANGES BETWEEN RELEASES> section explaining how to switch your code across
+to the new version, and we'll do our best to make it as painless as possible
+because we've got Web::Simple applications too. But we can't promise not to
+change things at all. Not yet. Sorry.
=head1 SYNOPSIS
sub () {
[ 405, [ 'Content-type', 'text/plain' ], [ 'Method not allowed' ] ]
}
- ];
+ };
}
HelloWorld->run_if_script;
http://my.server.name/cgi-bin/hello-world.cgi/
you'll get the "Hello world!" string output to your browser. For more complex
-examples and non-CGI deployment, see below.
+examples and non-CGI deployment, see below. To get help with Web::Simple,
+please connect to the irc.perl.org IRC network and join #web-simple.
=head1 WHY?
is encountered in other code.
-=head1 EXPORTED SUBROUTINES
-
-=head2 default_config
-
- default_config(
- one_key => 'foo',
- another_key => 'bar',
- );
-
- ...
-
- $self->config->{one_key} # 'foo'
-
-This creates the default configuration for the application, by creating a
-
- sub _default_config {
- return (one_key => 'foo', another_key => 'bar');
- }
-
-in the application namespace when executed. Note that this means that
-you should only run default_config once - calling it a second time will
-cause an exception to be thrown.
-
-=head2 dispatch
-
- dispatch {
- sub (GET) {
- [ 200, [ 'Content-type', 'text/plain' ], [ 'Hello world!' ] ]
- },
- sub () {
- [ 405, [ 'Content-type', 'text/plain' ], [ 'Method not allowed' ] ]
- }
- };
-
-The dispatch subroutine calls NameOfApplication->_setup_dispatcher with
-the return value of the block passed to it, which then creates your Web::Simple
-application's dispatcher from these subs. The prototype of each subroutine
-is expected to be a Web::Simple dispatch specification (see
-L</DISPATCH SPECIFICATIONS> below for more details), and the body of the
-subroutine is the code to execute if the specification matches.
-
-Each dispatcher is given the dispatcher constructed from the next subroutine
-returned as its next dispatcher, except for the final subroutine, which
-is given the return value of NameOfApplication->_build_final_dispatcher
-as its next dispatcher (by default this returns a 500 error response).
-
-See L</DISPATCH STRATEGY> below for details on how the Web::Simple dispatch
-system uses the return values of these subroutines to determine how to
-continue, alter or abort dispatch.
-
-Note that _setup_dispatcher creates a
-
- sub _dispatcher {
- return <root dispatcher object here>;
- }
-
-method in your class so as with default_config, calling dispatch a second time
-will result in an exception.
-
-=head2 response_filter
-
- response_filter {
- # Hide errors from the user because we hates them, preciousss
- if (ref($_[1]) eq 'ARRAY' && $_[1]->[0] == 500) {
- $_[1] = [ 200, @{$_[1]}[1..$#{$_[1]}] ];
- }
- return $_[1];
- };
-
-The response_filter subroutine is designed for use inside dispatch subroutines.
-
-It creates and returns a special dispatcher that always matches, and calls
-the block passed to it as a filter on the result of running the rest of the
-current dispatch chain.
-
-Thus the filter above runs further dispatch as normal, but if the result of
-dispatch is a 500 (Internal Server Error) response, changes this to a 200 (OK)
-response without altering the headers or body.
-
-=head2 redispatch_to
-
- redispatch_to '/other/url';
-
-The redispatch_to subroutine is designed for use inside dispatch subroutines.
-
-It creates and returns a special dispatcher that always matches, and instead
-of continuing dispatch re-delegates it to the start of the dispatch process,
-but with the path of the request altered to the supplied URL.
-
-Thus if you receive a POST to '/some/url' and return a redipstch to
-'/other/url', the dispatch behaviour will be exactly as if the same POST
-request had been made to '/other/url' instead.
-
-=head2 subdispatch
-
- subdispatch sub (/user/*/) {
- my $u = $self->user($_[1]);
- [
- sub (GET) { $u },
- sub (DELETE) { $u->delete },
- ]
- }
-
-The subdispatch subroutine is designed for use in dispatcher construction.
-
-It creates a dispatcher which, if it matches, treats its return value not
-as a final value but an arrayref of dispatch specifications such as could
-be passed to the dispatch subroutine itself. These are turned into a dispatcher
-which is then invoked. Any changes the match makes to the request are in
-scope for this inner dispatcher only - so if the initial match is a
-destructive one like .html the full path will be restored if the
-subdispatch fails.
-
=head1 DISPATCH STRATEGY
+=head2 Examples
+
+ dispatch {
+ # matches: GET /user/1.htm?show_details=1
+ # GET /user/1.htm
+ sub (GET + /user/* + ?show_details~ + .htm|.html|.xhtml) {
+ shift; my ($user_id, $show_details) = @_;
+ ...
+ },
+ # matches: POST /user?username=frew
+ # POST /user?username=mst&first_name=matt&last_name=trout
+ sub (POST + /user + ?username=&*) {
+ shift; my ($username, $misc_params) = @_;
+ ...
+ },
+ # matches: DELETE /user/1/friend/2
+ sub (DELETE + /user/*/friend/*) {
+ shift; my ($user_id, $friend_id) = @_;
+ ...
+ },
+ # matches: PUT /user/1?first_name=Matt&last_name=Trout
+ sub (PUT + /user/* + ?first_name~&last_name~) {
+ shift; my ($user_id, $first_name, $last_name) = @_;
+ ...
+ },
+ sub (/user/*/...) {
+ my $user_id = $_[1];
+ subdispatch sub {
+ [
+ # matches: PUT /user/1/role/1
+ sub (PUT + /role/*) {
+ my $role_id = $_[1];
+ ...
+ },
+ # matches: DELETE /user/1/role/1
+ sub (DELETE + /role/*) {
+ my $role_id = shift;
+ ...
+ },
+ ];
+ }
+ },
+ }
+
=head2 Description of the dispatcher object
Web::Simple::Dispatcher objects have three components:
=head3 Method matches
- sub (GET ...) {
+ sub (GET) {
A match specification beginning with a capital letter matches HTTP requests
with that request method.
to implement paging and ordering against a L<DBIx::Class::ResultSet> object.
+Note that if a parameter is specified as single and multiple values are found,
+the last one will be used.
+
To get all parameters as a hashref of arrayrefs, write:
sub(?@*) {
my ($self, $params) = @_;
...
+To get two parameters as a hashref, write:
+
+ sub(?:user~&:domain~) {
+ my ($self, $params) = @_; # params contains only 'user' and 'domain' keys
+
+You can also mix these, so:
+
+ sub (?foo=&@bar~&:coffee=&@*) {
+ my ($self, $foo, $bar, $params);
+
+where $bar is an arrayref (possibly an empty one), and $params contains
+arrayref values for all parameters -not- mentioned and a scalar value for
+the 'coffee' parameter.
+
=head3 Combining matches
Matches may be combined with the + character - e.g.
sub (GET+/user/*) {
+=head1 EXPORTED SUBROUTINES
+
+=head2 default_config
+
+ default_config(
+ one_key => 'foo',
+ another_key => 'bar',
+ );
+
+ ...
+
+ $self->config->{one_key} # 'foo'
+
+This creates the default configuration for the application, by creating a
+
+ sub _default_config {
+ return (one_key => 'foo', another_key => 'bar');
+ }
+
+in the application namespace when executed. Note that this means that
+you should only run default_config once - calling it a second time will
+cause an exception to be thrown.
+
+=head2 dispatch
+
+ dispatch {
+ sub (GET) {
+ [ 200, [ 'Content-type', 'text/plain' ], [ 'Hello world!' ] ]
+ },
+ sub () {
+ [ 405, [ 'Content-type', 'text/plain' ], [ 'Method not allowed' ] ]
+ }
+ };
+
+The dispatch subroutine calls NameOfApplication->_setup_dispatcher with
+the return value of the block passed to it, which then creates your Web::Simple
+application's dispatcher from these subs. The prototype of each subroutine
+is expected to be a Web::Simple dispatch specification (see
+L</DISPATCH SPECIFICATIONS> below for more details), and the body of the
+subroutine is the code to execute if the specification matches.
+
+Each dispatcher is given the dispatcher constructed from the next subroutine
+returned as its next dispatcher, except for the final subroutine, which
+is given the return value of NameOfApplication->_build_final_dispatcher
+as its next dispatcher (by default this returns a 500 error response).
+
+See L</DISPATCH STRATEGY> below for details on how the Web::Simple dispatch
+system uses the return values of these subroutines to determine how to
+continue, alter or abort dispatch.
+
+Note that _setup_dispatcher creates a
+
+ sub _dispatcher {
+ return <root dispatcher object here>;
+ }
+
+method in your class so as with default_config, calling dispatch a second time
+will result in an exception.
+
+=head2 response_filter
+
+ response_filter {
+ # Hide errors from the user because we hates them, preciousss
+ if (ref($_[1]) eq 'ARRAY' && $_[1]->[0] == 500) {
+ $_[1] = [ 200, @{$_[1]}[1..$#{$_[1]}] ];
+ }
+ return $_[1];
+ };
+
+The response_filter subroutine is designed for use inside dispatch subroutines.
+
+It creates and returns a special dispatcher that always matches, and calls
+the block passed to it as a filter on the result of running the rest of the
+current dispatch chain.
+
+Thus the filter above runs further dispatch as normal, but if the result of
+dispatch is a 500 (Internal Server Error) response, changes this to a 200 (OK)
+response without altering the headers or body.
+
+=head2 redispatch_to
+
+ redispatch_to '/other/url';
+
+The redispatch_to subroutine is designed for use inside dispatch subroutines.
+
+It creates and returns a special dispatcher that always matches, and instead
+of continuing dispatch re-delegates it to the start of the dispatch process,
+but with the path of the request altered to the supplied URL.
+
+Thus if you receive a POST to '/some/url' and return a redipstch to
+'/other/url', the dispatch behaviour will be exactly as if the same POST
+request had been made to '/other/url' instead.
+
+=head2 subdispatch
+
+ subdispatch sub (/user/*/) {
+ my $u = $self->user($_[1]);
+ [
+ sub (GET) { $u },
+ sub (DELETE) { $u->delete },
+ ]
+ }
+
+The subdispatch subroutine is designed for use in dispatcher construction.
+
+It creates a dispatcher which, if it matches, treats its return value not
+as a final value but an arrayref of dispatch specifications such as could
+be passed to the dispatch subroutine itself. These are turned into a dispatcher
+which is then invoked. Any changes the match makes to the request are in
+scope for this inner dispatcher only - so if the initial match is a
+destructive one like .html the full path will be restored if the
+subdispatch fails.
+
+=head1 CHANGES BETWEEN RELEASES
+
+=head2 Changes since Antiquated Perl
+
+=over 4
+
+=item * filter_response renamed to response_filter
+
+This is a pure rename; a global search and replace should fix it.
+
+=item * dispatch [] changed to dispatch {}
+
+Simply changing
+
+ dispatch [ sub(...) { ... }, ... ];
+
+to
+
+ dispatch { sub(...) { ... }, ... };
+
+should work fine.
+
+=back
+
+=head1 COMMUNITY AND SUPPORT
+
+=head2 IRC channel
+
+irc.perl.org #web-simple
+
+=head2 No mailing list yet
+
+Because mst's non-work email is a bombsite so he'd never read it anyway.
+
+=head2 Git repository
+
+Gitweb is on http://git.shadowcat.co.uk/ and the clone URL is:
+
+ git clone git://git.shadowcat.co.uk/catagits/Web-Simple.git
+
+=head1 AUTHOR
+
+Matt S. Trout <mst@shadowcat.co.uk>
+
+=head1 CONTRIBUTORS
+
+None required yet. Maybe this module is perfect (hahahahaha ...).
+
+=head1 COPYRIGHT
+
+Copyright (c) 2009 the Web::Simple L</AUTHOR> and L</CONTRIBUTORS>
+as listed above.
+
+=head1 LICENSE
+
+This library is free software and may be distributed under the same terms
+as perl itself.
+
=cut
1;
projects / catagits/Web-Simple.git / blobdiff