NAME

       OpenGuides::JSON - An OpenGuides plugin to output JSON.

DESCRIPTION

       Does all the JSON stuff for OpenGuides.  Distributed and installed as part of the OpenGuides project, not
       intended  for  independent  installation.   This  documentation  is  probably  only  useful to OpenGuides
       developers.

SYNOPSIS

           use Wiki::Toolkit;
           use OpenGuides::Config;
           use OpenGuides::JSON;

           my $wiki = Wiki::Toolkit->new( ... );
           my $config = OpenGuides::Config->new( file => "wiki.conf" );
           my $json_writer = OpenGuides::JSON->new( wiki   => $wiki,
                                                config => $config );

           # JSON version of a node.
           print "Content-Type: application/javascript\n\n";
           print $json_writer->emit_json( node => "Masala Zone, N1 0NU" );

           # Ten most recent changes.
           print "Content-Type: application/javascript\n";
           print "Last-Modified: " . $self->json_timestamp( items => 10 ) . "\n\n";
           print $json_writer->make_recentchanges_json( items => 10 );

METHODS

       new
               my $json_writer = OpenGuides::JSON->new( wiki   => $wiki,
                                                      config => $config );

           "wiki" must be a Wiki::Toolkit object and  "config"  must  be  an  OpenGuides::Config  object.   Both
           arguments mandatory.

       emit_json
               $wiki->write_node( "Masala Zone, N1 0NU",
                                "Quick and tasty Indian food",
                                $checksum,
                                { comment  => "New page",
                                  username => "Kake",
                                  locale   => "Islington" }
               );

               print "Content-Type: application/javascript\n\n";
               print $json_writer->emit_json( node => "Masala Zone, N1 0NU" );

           Note:  Some of the fields emitted by the JSON generator are taken from the node metadata. The form of
           this metadata is not mandated by Wiki::Toolkit. Your wiki application should make sure to store  some
           or all of the following metadata when calling "write_node":

           postcode - The postcode or zip code of the place discussed by the node.  Defaults to the empty
           string.
           city - The name of the city that the node is in.  If not supplied, then the value of "default_city"
           in the config object supplied to "new", if available, otherwise the empty string.
           country - The name of the country that the node is in.  If not supplied, then the value of
           "default_country" in the config object supplied to "new" will be used, if available, otherwise the
           empty string.
           username - An identifier for the person who made the latest edit to the node.  This person will be
           listed as a contributor (Dublin Core).  Defaults to empty string.
           locale - The value of this can be a scalar or an arrayref, since some places have a plausible claim
           to being in more than one locale.  Each of these is put in as a "Neighbourhood" attribute.
           phone - Only one number supported at the moment.  No validation.
           website - No validation.
           opening_hours_text - A freeform text field.
       json_maker
           Returns  a  raw  Wiki::Toolkit::Plugin::JSON  object  created with the values you invoked this module
           with.

       make_prefs_json
               my $json_writer = OpenGuides::JSON->new( wiki   => $wiki,
                                                        config => $config );
               print $json_writer->make_prefs_json();

           Retrieves the preferences from any stored preferences cookie, supplies defaults for  any  preferences
           not set, returns the result as JSON.

       make_recentchanges_json
               # Ten most recent changes.
               print "Content-Type: application/javascript\n";
               print "Last-Modified: " . $json_writer->json_timestamp( items => 10 ) . "\n\n";
               print $json_writer->make_recentchanges_json( items => 10 );

               # All the changes made by bob in the past week, ignoring minor edits.

               my %args = (
                            days               => 7,
                            ignore_minor_edits => 1,
                            filter_on_metadata => { username => "bob" },
                          );

               print "Content-Type: application/javascript\n";
               print "Last-Modified: " . $json_writer->json_timestamp( %args ) . "\n\n";
               print $json_writer->make_recentchanges_json( %args );

       json_timestamp
               print "Last-Modified: " . $json_writer->json_timestamp( %args ) . "\n\n";

           Returns  the  timestamp  of  the RSS feed in POSIX::strftime style ("Tue, 29 Feb 2000 12:34:56 GMT"),
           which is equivalent to the timestamp of the most recent item in the feed. Takes the same arguments as
           make_recentchanges_json(). You will most likely need this to print a  Last-Modified  HTTP  header  so
           user-agents can determine whether they need to reload the feed or not.

SEE ALSO

       •   Wiki::Toolkit

       •   <http://openguides.org/>

       •   <http://chefmoz.org/>

AUTHOR

       The OpenGuides Project (openguides-dev@openguides.org)

COPYRIGHT

       Copyright (C) 2003-2013 The OpenGuides Project.  All Rights Reserved.

       This  module  is  free  software;  you  can redistribute it and/or modify it under the same terms as Perl
       itself.

CREDITS

       Code in this module is mostly pirated from OpenGuides::RDF, those authors deserve all the  credit.  Chris
       Prather did the pirating.

perl v5.18.2                                       2014-04-02                              OpenGuides::JSON(3pm)