1Dancer2::Plugin::REST(3U)ser Contributed Perl DocumentatiDoanncer2::Plugin::REST(3)
2
6 Dancer2::Plugin::REST - A plugin for writing RESTful apps with Dancer2
7
9 version 1.02
10
12 package MyWebService;
13 use Dancer2;
15 use Dancer2::Plugin::REST;
16 prepare_serializer_for_format;
18 get '/user/:id.:format' => sub {
20 User->find(params->{id});
21 };
22 get qr{^/user/(?<id>\d+)\.(?<format>\w+)} => sub {
24 User->find(captures->{id});
25 };
26 # curl http://mywebservice/user/42.json
28 { "id": 42, "name": "John Foo", email: "john.foo@example.com"}
29 # curl http://mywebservice/user/42.yml
31 --
32 id: 42
33 name: "John Foo"
34 email: "john.foo@example.com"
35
37 This plugin helps you write a RESTful webservice with Dancer2.
38
40 serializers
41 The default format serializer hash which maps a given ":format" to a
42 "Dancer2::Serializer::*" serializer. Unless overriden in the
43 configuration, it defaults to:
44 serializers:
46 json: JSON
47 yml: YAML
48 dump: Dumper
49
51 prepare_serializer_for_format
52 When this pragma is used, a before filter is set by the plugin to
53 automatically change the serializer when a format is detected in the
54 URI.
55 That means that each route you define with a :format param or captures
57 token will trigger a serializer definition, if the format is known.
58 This lets you define all the REST actions you like as regular Dancer2
60 route handlers, without explicitly handling the outgoing data format.
61 Regexp routes will use the file-extension from captures->{'format'} to
63 determine the serialization format.
64 resource
66 This keyword lets you declare a resource your application will handle.
67 resource user =>
69 get => sub { # return user where id = params->{id} },
70 create => sub { # create a new user with params->{user} },
71 delete => sub { # delete user where id = params->{id} },
72 update => sub { # update user with params->{user} };
73 # this defines the following routes:
75 # GET /user/:id
76 # GET /user/:id.:format
77 # POST /user
78 # POST /user.:format
79 # DELETE /user/:id
80 # DELETE /user/:id.:format
81 # PUT /user/:id
82 # PUT /user/:id.:format
83 helpers
85 Helpers are available for all HTTP codes as recognized by
86 Dancer2::Core::HTTP:
87 status_100 status_continue
89 status_101 status_switching_protocols
90 status_102 status_processing
91 status_200 status_ok
93 status_201 status_created
94 status_202 status_accepted
95 status_203 status_non_authoritative_information
96 status_204 status_no_content
97 status_205 status_reset_content
98 status_206 status_partial_content
99 status_207 status_multi_status
100 status_208 status_already_reported
101 status_301 status_moved_permanently
103 status_302 status_found
104 status_303 status_see_other
105 status_304 status_not_modified
106 status_305 status_use_proxy
107 status_306 status_switch_proxy
108 status_307 status_temporary_redirect
109 status_400 status_bad_request
111 status_401 status_unauthorized
112 status_402 status_payment_required
113 status_403 status_forbidden
114 status_404 status_not_found
115 status_405 status_method_not_allowed
116 status_406 status_not_acceptable
117 status_407 status_proxy_authentication_required
118 status_408 status_request_timeout
119 status_409 status_conflict
120 status_410 status_gone
121 status_411 status_length_required
122 status_412 status_precondition_failed
123 status_413 status_request_entity_too_large
124 status_414 status_request_uri_too_long
125 status_415 status_unsupported_media_type
126 status_416 status_requested_range_not_satisfiable
127 status_417 status_expectation_failed
128 status_418 status_i_m_a_teapot
129 status_420 status_enhance_your_calm
130 status_422 status_unprocessable_entity
131 status_423 status_locked
132 status_424 status_failed_dependency
133 status_425 status_unordered_collection
134 status_426 status_upgrade_required
135 status_428 status_precondition_required
136 status_429 status_too_many_requests
137 status_431 status_request_header_fields_too_large
138 status_444 status_no_response
139 status_449 status_retry_with
140 status_450 status_blocked_by_windows_parental_controls
141 status_451 status_redirect
142 status_494 status_request_header_too_large
143 status_495 status_cert_error
144 status_496 status_no_cert
145 status_497 status_http_to_https
146 status_499 status_client_closed_request
147 status_500 status_error, status_internal_server_error
149 status_501 status_not_implemented
150 status_502 status_bad_gateway
151 status_503 status_service_unavailable
152 status_504 status_gateway_timeout
153 status_505 status_http_version_not_supported
154 status_506 status_variant_also_negotiates
155 status_507 status_insufficient_storage
156 status_508 status_loop_detected
157 status_509 status_bandwidth_limit_exceeded
158 status_510 status_not_extended
159 status_511 status_network_authentication_required
160 status_598 status_network_read_timeout_error
161 status_599 status_network_connect_timeout_error
162 All 1xx, 2xx and 3xx status helpers will set the response status to the
164 right value and serves its argument as the response, serialized.
165 status_ok({users => {...}});
167 # set status to 200, serves the serialized format of { users => {... } }
168 status_200({users => {...}});
170 # ditto
171 status_created({users => {...}});
173 # set status to 201, serves the serialized format of { users => {... } }
174 For error statuses ( 4xx and 5xx ), there is an additional dash of
176 syntaxic sugar: if the argument is a simple string, it'll be converted
177 to "{ error =" $error }>.
178 status_not_found({ error => "file $name not found" } );
180 # send 404 with serialization of { error => "file blah not found" }
181 status_not_found("file $name not found");
183 # ditto
184
186 This module is released under the same terms as Perl itself.
187
189 This module has been written by Alexis Sukrieh "<sukria@sukria.net>"
190 and Franck Cuny.
191
193 Dancer2 <http://en.wikipedia.org/wiki/Representational_State_Transfer>
194
196 Dancer Core Developers
197
199 This software is copyright (c) 2017, 2016, 2015, 2014, 2013, 2011, 2010
200 by Alexis Sukrieh.
201 This is free software; you can redistribute it and/or modify it under
203 the same terms as the Perl 5 programming language system itself.
204perl v5.30.1 2020-01-29 Dancer2::Plugin::REST(3)