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OpenSearch

Questions answered by this recipe

• How can my site be searched using the browser's own search box?
• How can I quickly go to a page on my site by just typing a few characters from its name?

Description

This recipe implements the OpenSearch description document, its autodiscovery from wiki pages, and the OpenSearch suggestions extension that allows for search term autocompletion/autosuggestion.

To install this recipe

• download opensearch.phpΔ to your cookbook directory
• add the following to your config file:
  include_once("$FarmD/cookbook/opensearch.php");

Configuration

The following variables may be set in your config file to configure the way OpenSearch works.

$OpenSearchUrl

default: $ScriptUrl

The base URL to add the actions to. For example, if you have a separate search page you might want to set this to "$ScriptUrl/Search" or whatever else is applicable.

$OpenSearchData

default: array( 'ShortName' => substr( $WikiTitle, 0, 16 ), 'Description' => "Search $WikiTitle" )

An array of XML elements to include on the OpenSearch description document, accessible using action=opensearchdescription. Please see the specification for details. The only required elements are the two included by default, along with the Url element that is added automatically.

Notes

The autocompletion only works for page names at the moment, in order to make the script as fast as possible. As eg. Firefox doesn't support the Query URL part of the JSON autocompletion reply, the default search action is overloaded to recognise a fully valid page name as a search term, and redirect to it.

At least for now, search results are only provided in the same HTML output as PmWiki normally produces. RSS and/or Atom feeds could be done, using customized PageList output.

As the recipe doesn't include any JavaScript or other front-end code, functionality is largely left to the user client (for now!). Autocompletion ought to work in Firefox and Google Chrome, everything else should also work in IE7 and up. Please refer to the browsers' own documentation for instructions how to add search engines.

Release Notes

• 2009-02-20Δ — first public release

See Also

• PITS:00871 Implement opensearch
• OpenSearch 1.1 (Draft 3) specification
• OpenSearch Suggestions extension
• Cookbook.FeedLinks - Add html-header links for auto-discovery of rss/atom feeds

Contributors

• Eemeli Aro

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