147 lines
4.6 KiB
Markdown
147 lines
4.6 KiB
Markdown
[[template id=plugin name=meta author="[[Joey]]"]]
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[[tag type/meta]]
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This plugin allows inserting arbitrary metadata into the source of a page.
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Enter the metadata as follows:
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\[[!meta field="value"]]
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\[[!meta field="value" param="value" param="value"]]
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The first form sets a given field to a given value, while the second form
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also specifies some additional sub-parameters.
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The field values are treated as HTML entity-escaped text, so you can include
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a quote in the text by writing `"` and so on.
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Supported fields:
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* title
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Overrides the title of the page, which is generally the same as the
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page name.
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Note that if the title is overridden, a "title_overridden" variable will
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be set to a true value in the template; this can be used to format things
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differently in this case.
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* license
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Specifies a license for the page, for example, "GPL". Can contain
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WikiLinks and arbitrary markup.
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* copyright
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Specifies the copyright of the page, for example, "Copyright 2007 by
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Joey Hess". Can contain WikiLinks and arbitrary markup.
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* author
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Specifies the author of a page.
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* authorurl
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Specifies an url for the author of a page.
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* description
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Specifies a "description" of the page. You could use this to provide
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a summary, for example, to be picked up by the [[map]] plugin.
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* permalink
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Specifies a permanent link to the page, if different than the page
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generated by ikiwiki.
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* date
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Specifies the creation date of the page. The date can be entered in
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nearly any format, since it's parsed by [[cpan TimeDate]].
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* stylesheet
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Adds a stylesheet to a page. The stylesheet is treated as a wiki link to
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a `.css` file in the wiki, so it cannot be used to add links to external
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stylesheets. Example:
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\[[!meta stylesheet=somestyle rel="alternate stylesheet"
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title="somestyle"]]
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* openid
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Adds html <link> tags to perform OpenID delegation to an external
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OpenID server (for `openid` and `openid2`). An optional `xrds-location`
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parameter lets you specify the location of any [eXtensible Resource
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DescriptorS](http://www.windley.com/archives/2007/05/using_xrds.shtml).
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This lets you use an ikiwiki page as your OpenID. Example:
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\\[[!meta openid="http://joeyh.myopenid.com/"
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server="http://www.myopenid.com/server"
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xrds-location="http://www.myopenid.com/xrds?username=joeyh.myopenid.com""]]
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* link
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Specifies a link to another page. This can be used as a way to make the
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wiki treat one page as linking to another without displaying a user-visible
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[[ikiwiki/WikiLink]]:
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\[[!meta link=otherpage]]
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It can also be used to insert a html <link> tag. For example:
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\[[!meta link="http://joeyh.myopenid.com/" rel="openid.delegate"]]
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However, this latter syntax won't be allowed if the [[htmlscrubber]] is
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enabled, since it can be used to insert unsafe content.
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* redir
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Causes the page to redirect to another page in the wiki.
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\[[!meta redir=otherpage]]
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Optionally, a delay (in seconds) can be specified. The default is to
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redirect without delay.
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It can also be used to redirect to an external url. For example:
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\[[!meta redir="http://example.com/"]]
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However, this latter syntax won't be allowed if the [[htmlscrubber]] is
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enabled, since it can be used to insert unsafe content.
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For both cases, an anchor to jump to inside the destination page may also be
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specified using the common `PAGE#ANCHOR` syntax.
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* robots
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Causes the robots meta tag to be written:
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\[[!meta robots="index, nofollow"]]
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Valid values for the attribute are: "index", "noindex", "follow", and
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"nofollow". Multiple comma-separated values are allowed, but obviously only
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some combinations make sense. If there is no robots meta tag, "index,
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follow" is used as the default.
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The plugin escapes the value, but otherwise does not care about its
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contents. In particular, it does not check the values against the set of
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valid values but serves whatever you pass it.
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* guid
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Specifies a globally unique ID for a page. This guid should be a URI
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(in particular, it can be `urn:uuid:` followed by a UUID, as per
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[[!rfc 4122]]), and it will be used to identify the page's entry in RSS
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and Atom feeds. If not given, the default is to use the page's URL as its
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guid.
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This is mostly useful when a page has moved, to keep the guids for
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pages unchanged and
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[[avoid_flooding_aggregators|tips/howto_avoid_flooding_aggregators]].
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If the field is not one of the above predefined fields, the metadata will be
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written to the generated html page as a <meta> header. However, this
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won't be allowed if the [[htmlscrubber]] is enabled, since it can be used to
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insert unsafe content.
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