1Dancer::Plugin(3)     User Contributed Perl Documentation    Dancer::Plugin(3)
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NAME

6       Dancer::Plugin - helper for writing Dancer plugins
7

VERSION

9       version 1.3513
10

SYNOPSIS

12         package Dancer::Plugin::LinkBlocker;
13         use Dancer ':syntax';
14         use Dancer::Plugin;
15
16         register block_links_from => sub {
17           my $conf = plugin_setting();
18           my $re = join ('|', @{$conf->{hosts}});
19           before sub {
20               if (request->referer && request->referer =~ /$re/) {
21                   status 403 || $conf->{http_code};
22               }
23           };
24         };
25
26         register_plugin;
27         1;
28
29       And in your application:
30
31           package My::Webapp;
32
33           use Dancer ':syntax';
34           use Dancer::Plugin::LinkBlocker;
35
36           block_links_from; # this is exported by the plugin
37

DESCRIPTION

39       Create plugins for Dancer
40

PLUGINS

42       You can extend Dancer by writing your own Plugin.
43
44       A plugin is a module that exports a bunch of symbols to the current
45       namespace (the caller will see all the symbols defined via "register").
46
47       Note that you have to "use" the plugin wherever you want to use its
48       symbols.  For instance, if you have Webapp::App1 and Webapp::App2, both
49       loaded from your main application, they both need to "use FooPlugin" if
50       they want to use the symbols exported by "FooPlugin".
51
52   METHODS
53       register
54           Lets you define a keyword that will be exported by the plugin.
55
56               register my_symbol_to_export => sub {
57                   # ... some code
58               };
59
60       register_plugin
61           A Dancer plugin must end with this statement. This lets the plugin
62           register all the symbols define with "register" as exported symbols
63           (via the Exporter module).
64
65           A Dancer plugin inherits from Dancer::Plugin and Exporter
66           transparently.
67
68       register_hook
69           Allows a plugin to declare a list of supported hooks. Any hook
70           declared like so can be executed by the plugin with
71           "execute_hooks".
72
73               register_hook 'foo';
74               register_hook 'foo', 'bar', 'baz';
75
76       execute_hooks
77           Allows a plugin to execute the hooks attached at the given position
78
79               execute_hooks 'some_hook';
80
81           The hook must have been registered by the plugin first, with
82           "register_hook".
83
84       plugin_setting
85           Configuration for plugin should be structured like this in the
86           config.yml of the application:
87
88             plugins:
89               plugin_name:
90                 key: value
91
92           If "plugin_setting" is called inside a plugin, the appropriate
93           configuration will be returned. The "plugin_name" should be the
94           name of the package, or, if the plugin name is under the
95           Dancer::Plugin:: namespace (which is recommended), the remaining
96           part of the plugin name.
97
98           Enclose the remaining part in quotes if it contains ::, e.g.  for
99           Dancer::Plugin::Foo::Bar, use:
100
101             plugins:
102               "Foo::Bar":
103                 key: value
104
105       plugin_args
106           To easy migration and interoperability between Dancer 1 and Dancer
107           2 you can use this method to obtain the arguments or parameters
108           passed to a plugin-defined keyword. Although not relevant for
109           Dancer 1 only, or Dancer 2 only, plugins, it is useful for
110           universal plugins.
111
112             register foo => sub {
113                my ($self, @args) = plugin_args(@_);
114                ...
115             }
116
117           Note that Dancer 1 will return undef as the object reference.
118

AUTHORS

120       This module has been written by Alexis Sukrieh and others.
121

LICENSE

123       This module is free software and is published under the same terms as
124       Perl itself.
125

AUTHOR

127       Dancer Core Developers
128

130       This software is copyright (c) 2010 by Alexis Sukrieh.
131
132       This is free software; you can redistribute it and/or modify it under
133       the same terms as the Perl 5 programming language system itself.
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137perl v5.32.0                      2020-07-28                 Dancer::Plugin(3)
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