Search Pattern Cookbook

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Solution 1: Using META

Since TWiki 4.0 you can now use the META variable:

%META{ "parent" dontrecurse="on" }%

Solution 2: Using SpreadSheetPlugin

• FormattedSearch

$percntCALC{$IF($EXACT($parent,),<nop>,$NOP(   * $parent))}$percnt

• FormattedSearch

Test Case

The parent topic of this topic is:

• FormattedSearch

Solution 3: Using IF statement

%SEARCH{ "^%BASETOPIC%$" web="%BASEWEB%" scope="topic" type="regex" nonoise="on" format="$percntIF{$quot$parent$quot then=$quot   * $parent$quot else=$quot<nop>$quot}$percnt" }%

Test Case

• FormattedSearch

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Pattern 5: Show all Children of a given topic

Problem

How to get to the list of all children of the current topic to display on the page?

Solution

The parent information is stored in the META:TOPICPARENT meta data. Do a SEARCH to find all topic parent meta data pointing to the current topic:

Children:
%SEARCH{ "META\:TOPICPARENT.*\"%TOPIC%\"" type="regex" nonoise="on" format="[[$topic]]" separator=", " }%

Note: Replace %TOPIC% with %BASETOPIC% if you put this SEARCH into the skin or a sidebar.

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Pattern 6: Search and display the home topics of public webs in a list

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Pattern 7: Create a select box with values from a bullet list

Problem

We 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:

• Clients
• People
• Rooms
• Buildings

Solution

The following search pattern can be employed:

<select name="type">
<option>Select category...</option>
%SEARCH{"   *\s*.*?" topic="CategoryList" type="regex" multiple="on" casesensitive="on" nosummary="on" nosearch="on" noheader="on" nototal="on" format="<option>$pattern(.*   \*\s*([^\n]*).*)</option>"}%
</select>

To render the bullet list as a comma-separated list, use the separator parameter:

%SEARCH{"   *\s*.*?" topic="CategoryList" type="regex" multiple="on" casesensitive="on" nosummary="on" nosearch="on" noheader="on" nototal="on" separator="," format="$pattern(.*   \*\s*([^\n]*).*)"}%

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Pattern 8: Extract a value from a named bullet list item

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Pattern 9: Search for Form and Meta data: explained

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Pattern 10: Search all topics that have been moved