Most people not familiar (enough) with Regular Expressions mostly cut and paste (and maybe tweak) from existing examples. This page intends to collect lots of examples together.
| *Name* | *Type* | *Description* | | option1 | option | | | option2 | option | | | option3 | option | |
How to extract the 'name' values, i.e. 'option1', 'option2' and 'option3' and put them in a HTML form select input?
%STARTSECTION{"solution1"}% <form> <select> %SEARCH{ "^\|[^\|]*\| *option *\|" topic="%TOPIC%" type="regex" multiple="on" nonoise="on" format="<option>$pattern(^\| *(.*?) *\|.*)</option>" }% </select> </form> %ENDSECTION{"solution1"}%Click to execute
| *Country* | | | | Afghanistan | | Aland Islands | | Albania | | Algeria | | American Samoa | | Andorra |You need to skip the header row. Use this search:
%STARTSECTION{"solution2"}% <select> %SEARCH{ "^\|[^\*\|]*\|" topic="CountryList" type="regex" multiple="on" nonoise="on" format="<option>$pattern(^\| *(.*?) *\|.*)</option>" }% </select> %ENDSECTION{"solution2"}%Click to execute
| a | b | c | d | e | | Marketing | b | c | d | e| | a | b | c | d | e | | a | marketing | c | d | e | | a | b | c | d | marketing |use this query:
%STARTSECTION{"solution3"}% %SEARCH{ "^\|.*?Marketing.*" type="regex" topic="%TOPIC%" multiple="on" nonoise="on" format="| $pattern(^\| *(.*?) *|.*)" }% %ENDSECTION{"solution3"}%Click to execute
%STARTSECTION{"solution4"}% %SEARCH{ "TopicClassification='%URLPARAM{"type" default="FrequentlyAskedQuestion"}%'" type="query" nonoise="on" sort="topic" format=" * [[$topic]] - <span class='foswikiGrayText'>$date, [[$wikiusername]]</span>" }% %ENDSECTION{"solution4"}%Click to execute
The filtering select dialogue is created as in Pattern 1:
%STARTSECTION{"solution5"}% *Filter:* <form name="selectType" action="%SCRIPTURLPATH{"view"}%/%WEB%/" > <select name="type" size="1" onchange="document.location=this.value;"> %SEARCH{ "^\|[^\|]*\| *option *\|" topic="TopicClassification" type="regex" nonoise="on" format="<option value='%BASETOPIC%?type=$pattern(^\| *(.*?) *\|.*)'> $pattern(^\| *(.*?) *\|.*)</option>" }% <option value='%BASETOPIC%'>All pages</option> </select> </form> %ENDSECTION{"solution5"}%This will create similar functionality as Foswiki:Extensions.TopicClassificationAddOn Click to execute
How to get to the parent of the current topic to display on the page?
Use the QUERY macro:
%STARTSECTION{"solution6"}% Parent of [[%TOPIC%]] is [[%QUERY{ "parent.name" }%]] %ENDSECTION{"solution6"}%Click to execute
How to get to the list of all children of the current topic to display on the page?
The parent information is stored in the topic meta data. Do a SEARCH to find all topic parent meta data pointing to the current topic:
%STARTSECTION{"solution7"}% %SEARCH{ "parent.name='%HOMETOPIC%'" type="query" nonoise="on" header="*Children:* " format="[[$topic]]" separator=", " }% %ENDSECTION{"solution7"}%Click to execute See also HierarchicalNavigation for an elaborate example.
How to find and display public webs in a drop down list box.
%STARTSECTION{"solution8"}% <form> <select name="topic"> <option value="%TOPIC%">Select...</option> %SEARCH{ "%HOMETOPIC%" scope="topic" web="all" topic="%HOMETOPIC%" format="<option value='$web.$topic'>$web</option>" separator=" " }% </select> <input type="submit" class="foswikiSubmit" value="Go" /> </form> %ENDSECTION{"solution8"}%
Public webs can be found with the %WEBLIST% macro.
Click to executeWe have a topic with a bullet list with category names. In another topic we want to offer these values in a select box dropdown.
For example, CategoryList has:The following search pattern can be employed:
%STARTSECTION{"solution9"}% <select name="type"> <option>Select category...</option> %SEARCH{ " *\s*.*?" topic="CategoryList" type="regex" multiple="on" casesensitive="on" nonoise="on" format="<option>$pattern(.* \*\s*([^\n]*).*)</option>" }% </select> %ENDSECTION{"solution9"}%Click to execute To render the bullet list as a comma-separated list, use the
separator
parameter:
%STARTSECTION{"solution10"}% %SEARCH{ " *\s*.*?" topic="CategoryList" type="regex" multiple="on" casesensitive="on" nonoise="on" separator="," format="$pattern(.* \*\s*([^\n]*).*)" }% %ENDSECTION{"solution10"}%Click to execute
How would I go about listing all moved topics ?
Search for the 'moved' meta data.
%STARTSECTION{"solution11"}% *Moved topics*: %SEARCH{ "moved.from=~'\w+'" web="all" type="query" separator=", " format="[[$web.$topic]]" nonoise="on" }% %ENDSECTION{"solution11"}%Click to execute
$pattern()
token.
%STARTSECTION{"solution12"}% %SEARCH{ "^---[+][^+][^\r\n]+[\r\n]" type="regex" nonoise="on" header="Headings:" limit="5" format=" * [[$topic][$pattern([\r\n\-+!]+([^\r\n]*?)[\r\n].*)]]" footer="Found $ntopics topics with level-1 headings" }% %ENDSECTION{"solution12"}%Click to execute
%STARTSECTION{"click2exec"}% %BUTTON{"Click to execute" onclick="jQuery('#%id%').trigger('refresh')"}% <div class="jqLoader" data-mode="manual" data-web="%INCLUDINGWEB%" data-topic="%INCLUDINGTOPIC%" data-section="%id%" id="%id%"></div> %JQREQUIRE{"loader"}% %ENDSECTION{"click2exec"}%