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1 | # |
2 | # Catlyst::Action::Serialize.pm |
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3 | # Created by: Adam Jacob, Marchex, <adam@hjksolutions.com> |
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4 | # |
5 | # $Id$ |
6 | |
7 | package Catalyst::Action::Serialize; |
8 | |
9 | use strict; |
10 | use warnings; |
11 | |
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12 | use base 'Catalyst::Action::SerializeBase'; |
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13 | use Module::Pluggable::Object; |
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14 | use Data::Dump qw(dump); |
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15 | |
16 | sub execute { |
17 | my $self = shift; |
18 | my ( $controller, $c ) = @_; |
19 | |
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20 | $self->NEXT::execute(@_); |
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21 | |
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22 | return 1 if $c->req->method eq 'HEAD'; |
23 | return 1 if length( $c->response->body ); |
24 | return 1 if scalar @{ $c->error }; |
25 | return 1 if $c->response->status =~ /^(?:204|3\d\d)$/; |
26 | |
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27 | my ( $sclass, $sarg, $content_type ) = |
28 | $self->_load_content_plugins( "Catalyst::Action::Serialize", |
29 | $controller, $c ); |
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30 | unless ( defined($sclass) ) { |
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31 | if ( defined($content_type) ) { |
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32 | $c->log->info("Could not find a serializer for $content_type"); |
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33 | } else { |
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34 | $c->log->info( |
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35 | "Could not find a serializer for an empty content type"); |
36 | } |
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37 | return 1; |
38 | } |
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39 | $c->log->debug( |
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40 | "Serializing with $sclass" . ( $sarg ? " [$sarg]" : '' ) ) if $c->debug; |
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41 | |
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42 | my $rc; |
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43 | if ( defined($sarg) ) { |
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44 | $rc = $sclass->execute( $controller, $c, $sarg ); |
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45 | } else { |
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46 | $rc = $sclass->execute( $controller, $c ); |
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47 | } |
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48 | if ( $rc eq 0 ) { |
49 | return $self->_unsupported_media_type( $c, $content_type ); |
50 | } elsif ( $rc ne 1 ) { |
51 | return $self->_serialize_bad_request( $c, $content_type, $rc ); |
52 | } |
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53 | |
54 | return 1; |
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55 | } |
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56 | |
57 | 1; |
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58 | |
59 | =head1 NAME |
60 | |
61 | Catalyst::Action::Serialize - Serialize Data in a Response |
62 | |
63 | =head1 SYNOPSIS |
64 | |
65 | package Foo::Controller::Bar; |
66 | |
67 | __PACKAGE__->config( |
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68 | 'default' => 'text/x-yaml', |
69 | 'stash_key' => 'rest', |
70 | 'map' => { |
71 | 'text/html' => [ 'View', 'TT', ], |
72 | 'text/x-yaml' => 'YAML', |
73 | 'text/x-data-dumper' => [ 'Data::Serializer', 'Data::Dumper' ], |
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74 | } |
75 | ); |
76 | |
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77 | sub end :ActionClass('Serialize') {} |
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78 | |
79 | =head1 DESCRIPTION |
80 | |
81 | This action will serialize the body of an HTTP Response. The serializer is |
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82 | selected by introspecting the HTTP Requests content-type header. |
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83 | |
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84 | It requires that your Catalyst controller is properly configured to set up the |
85 | mapping between Content Type's and Serialization classes. |
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86 | |
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87 | The specifics of serializing each content-type is implemented as a plugin to |
88 | L<Catalyst::Action::Serialize>. |
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89 | |
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90 | Typically, you would use this ActionClass on your C<end> method. However, |
91 | nothing is stopping you from choosing specific methods to Serialize: |
92 | |
93 | sub foo :Local :ActionClass('Serialize') { |
94 | .. populate stash with data .. |
95 | } |
96 | |
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97 | When you use this module, the request class will be changed to |
98 | L<Catalyst::Request::REST>. |
99 | |
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100 | =head1 CONFIGURATION |
101 | |
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102 | =head2 map |
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103 | |
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104 | Takes a hashref, mapping Content-Types to a given serializer plugin. |
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105 | |
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106 | =head2 default |
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107 | |
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108 | This is the 'fall-back' Content-Type if none of the requested or acceptable |
109 | types is found in the L</map>. It must be an entry in the L</map>. |
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110 | |
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111 | =head2 stash_key |
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112 | |
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113 | Specifies the key of the stash entry holding the data that is to be serialized. |
114 | So if the value is "rest", we will serialize the data under: |
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115 | |
116 | $c->stash->{'rest'} |
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117 | |
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118 | =head2 content_type_stash_key |
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119 | |
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120 | Specifies the key of the stash entry that optionally holds an overriding |
121 | Content-Type. If set, and if the specified stash entry has a valid value, |
122 | then it takes priority over the requested content types. |
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123 | |
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124 | This can be useful if you want to dynamically force a particular content type, |
125 | perhaps for debugging. |
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126 | |
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127 | =head1 HELPFUL PEOPLE |
128 | |
129 | Daisuke Maki pointed out that early versions of this Action did not play |
130 | well with others, or generally behave in a way that was very consistent |
131 | with the rest of Catalyst. |
132 | |
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133 | =head1 SEE ALSO |
134 | |
135 | You likely want to look at L<Catalyst::Controller::REST>, which implements |
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136 | a sensible set of defaults for doing a REST controller. |
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137 | |
138 | L<Catalyst::Action::Deserialize>, L<Catalyst::Action::REST> |
139 | |
140 | =head1 AUTHOR |
141 | |
142 | Adam Jacob <adam@stalecoffee.org>, with lots of help from mst and jrockway |
143 | |
144 | Marchex, Inc. paid me while I developed this module. (http://www.marchex.com) |
145 | |
146 | =head1 LICENSE |
147 | |
148 | You may distribute this code under the same terms as Perl itself. |
149 | |
150 | =cut |
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151 | |