Difference: TWikiTemplates (17 vs. 18)

Revision 182003-02-01 - PeterThoeny

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META TOPICPARENT name="WebHome"
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  1. WebTopicEditTemplate in the current web
  2. WebTopicEditTemplate in the TWiki web
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Edit Template Topics and Variable Expansion

The following variables get expanded when a user creates a new topic based on a template topic:

Variable: Description:
%DATE% Current date, e.g. 2019-11-12
%WIKIUSERNAME% User name, e.g. Main.TWikiGuest
%URLPARAM{"name"}% Value of a named URL parameter
%NOP% A no-operation variable that gets removed. Useful to prevent a SEARCH from hitting an edit template topic; also useful to escape a variable like %URLPARAM%NOP%{...}%
%NOP{ ... }% A no-operation text that gets removed. Useful to write-protect an edit template topic, but not the topics based this template topic. See notes below. Example:
%NOP{
   * Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup
  }%

Notes:

  • Unlike other variables, %NOP{ ... }% can span multiple lines.
  • The scan for the closing }% pattern is "non-greedy", that is, it stops at the first occurance. That means, you need to escape variables with parameters located inside %NOP{ ... }%: Insert a %NOP% between } and %. Silly example: %NOP{ %GMTIME{"$year"}%NOP%% }%.

All other variables are unchanged, e.g. are carried over "as is" into the new topic.

 

Template Topics in Action

Here is an example for creating new topics based on a specific template topic:

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  • A drawback of referring to a master template is that you can only test a template from within TWiki, where the include variables are resolved. In the previous system, each template was a structurally complete HTML document with a .tmpl filename extension - it contained unresolved %VARIABLES%, but could still be previewed directly in a browser.
Changed:
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-- PeterThoeny - 23 Jul 2001
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-- PeterThoeny - 01 Feb 2003
 -- MikeMannix - 14 Sep 2001
-- TWiki:Main/DavidLeBlanc - 11 Mar 2002
META FILEATTACHMENT attr="h" comment="Example of oopstest.tmpl rendered" date="1026977240" name="testscreen.gif" path="C:\Data\Temp\testscreen.gif" size="9566" user="PeterThoeny" version="1.2"
 
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