Provided by: libwiki-toolkit-perl_0.83-1_all 
NAME
Wiki::Toolkit - A toolkit for building Wikis.
DESCRIPTION
Helps you develop Wikis quickly by taking care of the boring bits for you. You will still
need to write some code - this isn't an instant Wiki.
SYNOPSIS
# Set up a wiki object with an SQLite storage backend, and an
# inverted index/DB_File search backend. This store/search
# combination can be used on systems with no access to an actual
# database server.
my $store = Wiki::Toolkit::Store::SQLite->new(
dbname => "/home/wiki/store.db" );
my $indexdb = Search::InvertedIndex::DB::DB_File_SplitHash->new(
-map_name => "/home/wiki/indexes.db",
-lock_mode => "EX" );
my $search = Wiki::Toolkit::Search::SII->new(
indexdb => $indexdb );
my $wiki = Wiki::Toolkit->new( store => $store,
search => $search );
# Do all the CGI stuff.
my $q = CGI->new;
my $action = $q->param("action");
my $node = $q->param("node");
if ($action eq 'display') {
my $raw = $wiki->retrieve_node($node);
my $cooked = $wiki->format($raw);
print_page(node => $node,
content => $cooked);
} elsif ($action eq 'preview') {
my $submitted_content = $q->param("content");
my $preview_html = $wiki->format($submitted_content);
print_editform(node => $node,
content => $submitted_content,
preview => $preview_html);
} elsif ($action eq 'commit') {
my $submitted_content = $q->param("content");
my $cksum = $q->param("checksum");
my $written = $wiki->write_node($node, $submitted_content, $cksum);
if ($written) {
print_success($node);
} else {
handle_conflict($node, $submitted_content);
}
}
METHODS
new
# Set up store, search and formatter objects.
my $store = Wiki::Toolkit::Store::SQLite->new(
dbname => "/home/wiki/store.db" );
my $indexdb = Search::InvertedIndex::DB::DB_File_SplitHash->new(
-map_name => "/home/wiki/indexes.db",
-lock_mode => "EX" );
my $search = Wiki::Toolkit::Search::SII->new(
indexdb => $indexdb );
my $formatter = My::HomeMade::Formatter->new;
my $wiki = Wiki::Toolkit->new(
store => $store, # mandatory
search => $search, # defaults to undef
formatter => $formatter # defaults to something suitable
);
"store" must be an object of type "Wiki::Toolkit::Store::*" and "search" if supplied
must be of type "Wiki::Toolkit::Search::*" (though this isn't checked yet - FIXME). If
"formatter" isn't supplied, it defaults to an object of class
Wiki::Toolkit::Formatter::Default.
You can get a searchable Wiki up and running on a system without an actual database
server by using the SQLite storage backend with the SII/DB_File search backend - cut
and paste the lines above for a quick start, and see Wiki::Toolkit::Store::SQLite,
Wiki::Toolkit::Search::SII, and Search::InvertedIndex::DB::DB_File_SplitHash when you
want to learn the details.
"formatter" can be any object that behaves in the right way; this essentially means
that it needs to provide a "format" method which takes in raw text and returns the
formatted version. See Wiki::Toolkit::Formatter::Default for a simple example. Note
that you can create a suitable object from a sub very quickly by using
Test::MockObject like so:
my $formatter = Test::MockObject->new();
$formatter->mock( 'format', sub { my ($self, $raw) = @_;
return uc( $raw );
} );
I'm not sure whether to put this in the module or not - it'd let you just supply a sub
instead of an object as the formatter, but it feels wrong to be using a Test::* module
in actual code.
retrieve_node
my $content = $wiki->retrieve_node($node);
# Or get additional data about the node as well.
my %node = $wiki->retrieve_node("HomePage");
print "Current Version: " . $node{version};
# Maybe we stored some of our own custom metadata too.
my $categories = $node{metadata}{category};
print "Categories: " . join(", ", @$categories);
print "Postcode: $node{metadata}{postcode}[0]";
# Or get an earlier version:
my %node = $wiki->retrieve_node( name => "HomePage",
version => 2,
);
print $node{content};
In scalar context, returns the current (raw Wiki language) contents of the specified
node. In list context, returns a hash containing the contents of the node plus
additional data:
last_modified
version
checksum
metadata - a reference to a hash containing any caller-supplied metadata sent along
the last time the node was written
The "node" parameter is mandatory. The "version" parameter is optional and defaults to
the newest version. If the node hasn't been created yet, it is considered to exist but
be empty (this behaviour might change).
Note on metadata - each hash value is returned as an array ref, even if that type of
metadata only has one value.
moderate_node
my $ok = $wiki->moderate_node(name => $node, version => $version);
Marks the given version of the node as moderated. If this is the highest moderated
version, then update the node's contents to hold this version.
set_node_moderation
my $ok = $wiki->set_node_moderation(name => $node, required => $required);
Sets if a node requires moderation or not. (Moderation is required when $required is
true).
When moderation is required, new versions of a node will sit about until they're
tagged as moderated, when they will become the new node.
rename_node
my $ok = $wiki->rename_node(old_name => $old_name, new_name => $new_name, create_new_versions => $create_new_versions );
Renames a node, updating any references to it as required.
Uses the internal_links table to identify the nodes that link to this one, and re-
writes any wiki links in these to point to the new name. If required, it can mark
these updates to other pages as a new version.
verify_checksum
my $ok = $wiki->verify_checksum($node, $checksum);
Sees whether your checksum is current for the given node. Returns true if so, false if
not.
NOTE: Be aware that when called directly and without locking, this might not be
accurate, since there is a small window between the checking and the returning where
the node might be changed, so don't rely on it for safe commits; use "write_node" for
that. It can however be useful when previewing edits, for example.
list_backlinks
# List all nodes that link to the Home Page.
my @links = $wiki->list_backlinks( node => "Home Page" );
list_dangling_links
# List all nodes that have been linked to from other nodes but don't
# yet exist.
my @links = $wiki->list_dangling_links;
Each node is returned once only, regardless of how many other nodes link to it.
list_all_nodes
my @nodes = $wiki->list_all_nodes;
Returns a list containing the name of every existing node. The list won't be in any
kind of order; do any sorting in your calling script.
list_nodes_by_metadata
# All documentation nodes.
my @nodes = $wiki->list_nodes_by_metadata(
metadata_type => "category",
metadata_value => "documentation",
ignore_case => 1, # optional but recommended (see below)
);
# All pubs in Hammersmith.
my @pubs = $wiki->list_nodes_by_metadata(
metadata_type => "category",
metadata_value => "Pub",
);
my @hsm = $wiki->list_nodes_by_metadata(
metadata_type => "category",
metadata_value => "Hammersmith",
);
my @results = my_l33t_method_for_ANDing_arrays( \@pubs, \@hsm );
Returns a list containing the name of every node whose caller-supplied metadata
matches the criteria given in the parameters.
By default, the case-sensitivity of both "metadata_type" and "metadata_value" depends
on your database - if it will return rows with an attribute value of "Pubs" when you
asked for "pubs", or not. If you supply a true value to the "ignore_case" parameter,
then you can be sure of its being case-insensitive. This is recommended.
If you don't supply any criteria then you'll get an empty list.
This is a really really really simple way of finding things; if you want to be more
complicated then you'll need to call the method multiple times and combine the results
yourself, or write a plugin.
list_nodes_by_missing_metadata Returns nodes where either the metadata doesn't exist, or
is blank
Unlike list_nodes_by_metadata(), the metadata value is optional (the metadata type is
required).
# All nodes missing documentation
my @nodes = $store->list_nodes_by_missing_metadata(
metadata_type => "category",
metadata_value => "documentation",
ignore_case => 1, # optional but recommended (see below)
);
# All nodes which don't have a latitude defined
my @nodes = $store->list_nodes_by_missing_metadata(
metadata_type => "latitude"
);
list_recent_changes
This is documented in Wiki::Toolkit::Store::Database; see there for parameters and
return values. All parameters are passed through directly to the store object, so,
for example,
my @nodes = $wiki->list_recent_changes( days => 7 );
does exactly the same thing as
my @nodes = $wiki->store->list_recent_changes( days => 7 );
list_unmoderated_nodes
my @nodes = $wiki->list_unmoderated_nodes();
my @nodes = $wiki->list_unmoderated_nodes(
only_where_latest => 1
);
$nodes[0]->{'name'} # The name of the node
$nodes[0]->{'node_id'} # The id of the node
$nodes[0]->{'version'} # The version in need of moderation
$nodes[0]->{'moderated_version'} # The newest moderated version
Fetches details of all the node versions that require moderation (id,
name, version, and latest moderated version).
If only_where_latest is set, then only the latest version of nodes where
the latest version needs moderating are returned.
Otherwise, all node versions (including old ones, and possibly multiple
per node) are returned.
list_node_all_versions
my @versions = $wiki->list_node_all_versions("HomePage");
my @versions = $wiki->list_node_all_versions(
name => 'HomePage',
with_content => 1,
with_metadata => 0
);
Returns all the versions of a node, optionally including the content and metadata, as
an array of hashes (newest versions first).
list_last_version_before List the last version of every node before a given date. If no
version existed before that date, will return undef for version. Returns a hash of id,
name, version and date
my @nv = $wiki->list_last_version_before('2007-01-02 10:34:11')
foreach my $data (@nv) {
}
node_exists
my $ok = $wiki->node_exists( "Wombat Defenestration" );
# or ignore case - optional but recommended
my $ok = $wiki->node_exists(
name => "monkey brains",
ignore_case => 1,
);
Returns true if the node has ever been created (even if it is currently empty), and
false otherwise.
By default, the case-sensitivity of "node_exists" depends on your store backend. If
you supply a true value to the "ignore_case" parameter, then you can be sure of its
being case-insensitive. This is recommended.
node_required_moderation
my $needs = $wiki->node_required_moderation( "Wombat Defenestration" );
Returns true if the node exists and requires moderation, and false otherwise.
delete_node
$wiki->delete_node( name => "Home Page", version => 15 );
"version" is optional. If it is supplied then only that version of the node will be
deleted. Otherwise the node and all its history will be completely deleted.
Doesn't do any locking though - to fix? You probably don't want to let anyone except
Wiki admins call this. You may not want to use it at all.
Croaks on error, silently does nothing if the node or version doesn't exist, returns
true if no error.
search_nodes
# Find all the nodes which contain the word 'expert'.
my %results = $wiki->search_nodes('expert');
Returns a (possibly empty) hash whose keys are the node names and whose values are the
scores in some kind of relevance-scoring system I haven't entirely come up with yet.
For OR searches, this could initially be the number of terms that appear in the node,
perhaps.
Defaults to AND searches (if $and_or is not supplied, or is anything other than "OR"
or "or").
Searches are case-insensitive.
Croaks if you haven't defined a search backend.
supports_phrase_searches
if ( $wiki->supports_phrase_searches ) {
return $wiki->search_nodes( '"fox in socks"' );
}
Returns true if your chosen search backend supports phrase searching, and false
otherwise.
supports_fuzzy_searches
if ( $wiki->supports_fuzzy_searches ) {
return $wiki->fuzzy_title_match( 'Kings Cross, St Pancreas' );
}
Returns true if your chosen search backend supports fuzzy title searching, and false
otherwise.
fuzzy_title_match
NOTE: This section of the documentation assumes you are using a search engine which
supports fuzzy matching. (See above.) The Wiki::Toolkit::Search::DBIxFTS backend in
particular does not.
$wiki->write_node( "King's Cross St Pancras", "A station." );
my %matches = $wiki->fuzzy_title_match( "Kings Cross St. Pancras" );
Returns a (possibly empty) hash whose keys are the node names and whose values are the
scores in some kind of relevance-scoring system I haven't entirely come up with yet.
Note that even if an exact match is found, any other similar enough matches will also
be returned. However, any exact match is guaranteed to have the highest relevance
score.
The matching is done against "canonicalised" forms of the search string and the node
titles in the database: stripping vowels, repeated letters and non-word characters,
and lowercasing.
Croaks if you haven't defined a search backend.
register_plugin
my $plugin = Wiki::Toolkit::Plugin::Foo->new;
$wiki->register_plugin( plugin => $plugin );
Registers the plugin with the wiki as one that needs to be informed when we write a
node.
If the plugin "isa" Wiki::Toolkit::Plugin, calls the methods set up by that parent
class to let it know about the backend store, search and formatter objects.
Finally, calls the plugin class's "on_register" method, which should be used to check
tables are set up etc. Note that because of the order these things are done in,
"on_register" for Wiki::Toolkit::Plugin subclasses can use the "datastore", "indexer"
and "formatter" methods as it needs to.
get_registered_plugins
my @plugins = $wiki->get_registered_plugins;
Returns an array of plugin objects.
write_node
my $written = $wiki->write_node($node, $content, $checksum, \%metadata, $requires_moderation);
if ($written) {
display_node($node);
} else {
handle_conflict();
}
Writes the specified content into the specified node in the backend storage; and
indexes/reindexes the node in the search indexes (if a search is set up); calls
"post_write" on any registered plugins.
Note that you can blank out a node without deleting it by passing the empty string as
$content, if you want to.
If you expect the node to already exist, you must supply a checksum, and the node is
write-locked until either your checksum has been proved old, or your checksum has been
accepted and your change committed. If no checksum is supplied, and the node is found
to already exist and be nonempty, a conflict will be raised.
The first two parameters are mandatory, the others optional. If you want to supply
metadata but have no checksum (for a newly-created node), supply a checksum of
"undef".
The final parameter, $requires_moderation (which defaults to false), is ignored except
on new nodes. For existing nodes, use $wiki->toggle_node_moderation to change the node
moderation flag.
Returns the version of the updated node on success, 0 on conflict, croaks on error.
Note on the metadata hashref: Any data in here that you wish to access directly later
must be a key-value pair in which the value is either a scalar or a reference to an
array of scalars. For example:
$wiki->write_node( "Calthorpe Arms", "nice pub", $checksum,
{ category => [ "Pubs", "Bloomsbury" ],
postcode => "WC1X 8JR" } );
# and later
my @nodes = $wiki->list_nodes_by_metadata(
metadata_type => "category",
metadata_value => "Pubs" );
For more advanced usage (passing data through to registered plugins) you may if you
wish pass key-value pairs in which the value is a hashref or an array of hashrefs. The
data in the hashrefs will not be stored as metadata; it will be checksummed and the
checksum will be stored instead. Such data can only be accessed via plugins.
format
my $cooked = $wiki->format($raw, $metadata);
Passed straight through to your chosen formatter object. You do not have to supply the
$metadata hashref, but if your formatter allows node metadata to affect the rendering
of the node then you will want to.
store
my $store = $wiki->store;
my $dbname = eval { $wiki->store->dbname; }
or warn "Not a DB backend";
Returns the storage backend object.
search_obj
my $search_obj = $wiki->search_obj;
Returns the search backend object.
formatter
my $formatter = $wiki->formatter;
Returns the formatter backend object.
SEE ALSO
For a very quick Wiki startup without any of that icky programming stuff, see Tom Insam's
Wiki::Toolkit::Kwiki, an instant wiki based on Wiki::Toolkit.
Or for the specialised application of a wiki about a city, see the OpenGuides
distribution.
Wiki::Toolkit allows you to use different formatting modules. Text::WikiFormat might be
useful for anyone wanting to write a custom formatter. Existing formatters include:
· Wiki::Toolkit::Formatter::Default (in this distro)
· Wiki::Toolkit::Formatter::Pod
· Wiki::Toolkit::Formatter::UseMod
There's currently a choice of three storage backends - all database-backed.
· Wiki::Toolkit::Store::MySQL (in this distro)
· Wiki::Toolkit::Store::Pg (in this distro)
· Wiki::Toolkit::Store::SQLite (in this distro)
· Wiki::Toolkit::Store::Database (parent class for the above - in this distro)
A search backend is optional:
· Wiki::Toolkit::Search::DBIxFTS (in this distro, uses DBIx::FullTextSearch)
· Wiki::Toolkit::Search::SII (in this distro, uses Search::InvertedIndex)
Standalone plugins can also be written - currently they should only read from the backend
storage, but write access guidelines are coming soon. Plugins written so far and available
from CPAN:
· Wiki::Toolkit::Plugin::GeoCache
· Wiki::Toolkit::Plugin::Categoriser
· Wiki::Toolkit::Plugin::Locator::UK
· Wiki::Toolkit::Plugin::RSS::ModWiki
If writing a plugin you might want an easy way to run tests for it on all possible
backends:
· Wiki::Toolkit::TestConfig::Utilities (in this distro)
Other ways to implement Wikis in Perl include:
· CGI::Kwiki (an instant wiki)
· CGI::pWiki
· AxKit::XSP::Wiki
· Apache::MiniWiki
· UseModWiki <http://usemod.com>
· Chiq Chaq <http://chiqchaq.sourceforge.net/>
AUTHOR
Kake Pugh (kake@earth.li) and the Wiki::Toolkit team (including Nick Burch and Dominic
Hargreaves)
SUPPORT
Questions should go to cgi-wiki-dev@earth.li.
COPYRIGHT
Copyright (C) 2002-2004 Kake Pugh. All Rights Reserved.
Copyright (C) 2006-2013 the Wiki::Toolkit team. All Rights Reserved.
This module is free software; you can redistribute it and/or modify it under the same
terms as Perl itself.
FEEDBACK
The developer web site and bug tracker is at
http://www.wiki-toolkit.org/ - please file bugs there as appropriate.
You could also subscribe to the dev list at
http://www.earth.li/cgi-bin/mailman/listinfo/cgi-wiki-dev
BUGS
Versions between 0.75 and 0.79 inclusive contain a bug which prevents Recent Changes
routines from working correctly if minor changes are excluded
<http://www.wiki-toolkit.org/ticket/41>. You may wish to avoid upgrading to this version
until it is fixed if this is important to you; the fix is however not trivial so noone has
been able to step up yet.
Other minor bugs are documented at <http://www.wiki-toolkit.org/report>
CREDITS
Various London.pm types helped out with code review, encouragement, JFDI, style advice,
code snippets, module recommendations, and so on; far too many to name individually, but
particularly Richard Clamp, Tony Fisher, Mark Fowler, and Chris Ball.
blair christensen sent patches and gave me some good ideas. chromatic continues to
patiently apply my patches to Text::WikiFormat and help me get it working in just the way
I need. Paul Makepeace helped me add support for connecting to non-local databases. Shevek
has been prodding me a lot lately. The OpenGuides team keep me well-supplied with
encouragement and bug reports.
Nick Burch has been leading the way with development leading up to the release under the
Wiki::Toolkit name.
GRATUITOUS PLUG
I'm only obsessed with Wikis because of the Open Guide to London --
<http://openguides.org/london/>