The meta directive is supplied by the [[!iki plugins/meta desc=meta]] plugin.
This directive allows inserting arbitrary metadata into the source of a page.
Enter the metadata as follows:
\[[!meta field="value"]]
\[[!meta field="value" param="value" param="value"]]
The first form sets a given field to a given value, while the second form
also specifies some additional sub-parameters.
The field values are treated as HTML entity-escaped text, so you can include
a quote in the text by writing " and so on.
Supported fields:
-
title
Overrides the title of the page, which is generally the same as the
page name.
Note that if the title is overridden, a "title_overridden" variable will
be set to a true value in the template; this can be used to format things
differently in this case.
-
license
Specifies a license for the page, for example, "GPL". Can contain
WikiLinks and arbitrary markup.
-
copyright
Specifies the copyright of the page, for example, "Copyright 2007 by
Joey Hess". Can contain WikiLinks and arbitrary markup.
-
author
Specifies the author of a page.
-
authorurl
Specifies an url for the author of a page.
-
description
Specifies a "description" of the page. You could use this to provide
a summary, for example, to be picked up by the [[map]] directive.
-
permalink
Specifies a permanent link to the page, if different than the page
generated by ikiwiki.
-
date
Specifies the creation date of the page. The date can be entered in
nearly any format, since it's parsed by [[!cpan TimeDate]].
-
stylesheet
Adds a stylesheet to a page. The stylesheet is treated as a wiki link to
a .css file in the wiki, so it cannot be used to add links to external
stylesheets. Example:
[[!meta stylesheet=somestyle rel="alternate stylesheet"
title="somestyle"]]
-
openid
Adds html <link> tags to perform OpenID delegation to an external
OpenID server (for openid and openid2). An optional xrds-location
parameter lets you specify the location of any eXtensible Resource
DescriptorS.
This lets you use an ikiwiki page as your OpenID. Example:
\[[!meta openid="http://joeyh.myopenid.com/"
server="http://www.myopenid.com/server"
xrds-location="http://www.myopenid.com/xrds?username=joeyh.myopenid.com""]]
-
link
Specifies a link to another page. This can be used as a way to make the
wiki treat one page as linking to another without displaying a user-visible
[[ikiwiki/WikiLink]]:
\[[!meta link=otherpage]]
It can also be used to insert a html <link> tag. For example:
\[[!meta link="http://joeyh.myopenid.com/" rel="openid.delegate"]]
However, this latter syntax won't be allowed if the
[[!iki plugins/htmlscrubber desc=htmlscrubber]] plugin is enabled, since it can be used to
insert unsafe content.
-
redir
Causes the page to redirect to another page in the wiki.
[[!meta redir=otherpage]]
Optionally, a delay (in seconds) can be specified. The default is to
redirect without delay.
It can also be used to redirect to an external url. For example:
[[!meta redir="http://example.com/"]]
However, this latter syntax won't be allowed if the
[[!iki plugins/htmlscrubber desc=htmlscrubber]] plugin is enabled, since it can be used to
insert unsafe content.
For both cases, an anchor to jump to inside the destination page may also be
specified using the common #ANCHOR syntax.
-
robots
Causes the robots meta tag to be written:
\[[!meta robots="index, nofollow"]]
Valid values for the attribute are: "index", "noindex", "follow", and
"nofollow". Multiple comma-separated values are allowed, but obviously only
some combinations make sense. If there is no robots meta tag, "index,
follow" is used as the default.
The value is escaped, but its contents are not otherwise checked.
-
guid
Specifies a globally unique ID for a page. This guid should be a URI
(in particular, it can be urn:uuid: followed by a UUID, as per
[[!rfc 4122]]), and it will be used to identify the page's entry in RSS
and Atom feeds. If not given, the default is to use the page's URL as its
guid.
This is mostly useful when a page has moved, to keep the guids for
pages unchanged and avoid_flooding_aggregators
(see [[!iki tips/howto_avoid_flooding_aggregators]]).
If the field is not one of the above predefined fields, the metadata will be
written to the generated html page as a <meta> header. However, this
won't be allowed if the [[!iki plugins/htmlscrubber desc=htmlscrubber]] plugin is enabled,
since it can be used to insert unsafe content.
[[!meta robots="noindex, follow"]]
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