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