Topic Create Plugin

This Plugin allows you to automatically create topics or attach files at topic save time. This is typically used by TWiki applications to create a set of template based topics.

TOPICCREATE - Automatically Create a Set of TWiki Topics

• The %TOPICCREATE{}% TWikiVariable is useful for creating topics based on templates
• Example scenario: You have a notebook application where users can create new notebooks based on a notebook template topic. Each time a user creates a new notebook you would like to create a set of child topics, each based on a separate template.
• Syntax: %TOPICCREATE{ <attributes> }%
• Attributes recognized

  Attribute	Meaning	Valid input	Default
  template=""	Name of TWiki topic to be used as template	Any valid TWiki topic	(required)
  topic=""	Name of new TWiki topic to create	Any valid WikiWord	(required)
  disable=""	Name of the template topic containing this use of TOPICCREATE	Any valid topic name (WikiWord)	recommended
  parameters=""	List of parameters to pass to a child topic to initialize any urlparams.	Following syntax: <parameter-name>=<parameter-value> followed by any number of parameter name, value pairs separated by &	No Parameters

• The action to create the TWiki topic will not occur until one hits the Save Changes button in preview
• The %TOPICCREATE{}% variable will be removed upon saving of the topic
• Any attachments that are in the template will also be copied to the new topic
• %TOPICCREATE% is recursive
• Write %TOPICCREATE{ template="MyTemplate" topic="%TOPIC%MyNewTopicName" parameters="MyParameterName=MyParameterValue&Hello=Goodbye" }% to create a twiki topic based on another topic MyTemplate with the name %TOPIC%MyNewTopicName. Any %URLPARAM{}% with the name MyParameterName and Hello present in MyTemplate will be replaced with MyParameterValue and Goodbye.
• To prevent the action from happening in your template topic you should either include the disable argument, or escape it: %TOPICCRE%NOP%ATE{...}%. The %NOP% gets removed when a topic gets instantiated based on a template.

TOPICATTACH - Automatically Copy Attachments to a Topic

• Example scenario: You have a template topic and would like to attach a file whose's content or name is determined by URL parameters at topic creation time. This is usually done for a topic that was just created via TOPICCREATE as described above.
• Syntax: %TOPICATTACH{ <attributes> }%
• Attributes recognized

  Attribute	Meaning	Valid input	Default
  fromtopic=""	Topic (or Web.Topic) that contains the attachment	Any valid TWiki topic	(required)
  fromfile=""	The attachment to copy from	Any attached file from fromtopic	(required)
  disable=""	Name of the template topic containing this use of TOPICATTACH	Any valid topic name (WikiWord)	(required)
  comment=""	Comment to appear for the attachment within this topic, replacing the comment that was in the fromtopic	a one line string	{omit parameter if no change desired}

• Write %TOPICATTACH{ fromtopic="SourceTopic" fromfile="Sample.jpg" name="Snoopy.jpg" disable="..."}% to attach Sample.jpg from topic SourceTopic as Snoopy.jpg
• The parameter value comment is used to change the comment (description) that shows for the topic in the table of attachments
• The "hidden" attribute of the topic is removed: the attachment can be hidden in the fromtopic if desired
• The fromtopic can specify a different web if desired. For example TWiki.SomeTemplate would be valid as a fromtopic
• To prevent the action from happening in your template topic you must provide the disable parameter with the topic name containing the %TOPICATTACH%.

Limitations/TODO:

• There should be a name argument to rename the topic as it is copied
• The TOPICATTACH must be in the 'top level' topic being saved by a TOPICCREATE. It can not be in a recursive/subordinate topic invoked by the TOPICCREATE.

Plugin Settings

Plugin settings are stored as preferences variables. To reference a plugin setting write %<plugin>_<setting>%, i.e. %TOPICCREATEPLUGIN_SHORTDESCRIPTION%

• One line description, is shown in the TextFormattingRules topic:
  • Set SHORTDESCRIPTION = Automatically create a set of topics and attachments at topic save time

• Debug plugin: (See output in data/debug.txt)
  • Set DEBUG = 0

Known issues

• This Plugin is Unix specific and depends on the Unix utilities cp and mkdir.
• For safety reasons, the path to the utilities is hardcoded in the Plugin module. The path might need to be changed depending on your environment.
• Precautions have been taken to make this Plugin safe. It does not have ANY WARRANTY, does not even have the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. It is up to the administrator to decide if this Plugin is safe for a public TWiki site.

Plugin Installation Instructions

Note: You do not need to install anything on the browser to use this plugin. The following instructions are for the administrator who installs the plugin on the server where TWiki is running.

• Download the ZIP file from the Plugin web (see below)
• Unzip TopicCreatePlugin.zip in your twiki installation directory. Content:

  File:	Description:
  data/TWiki/TopicCreatePlugin.txt	Plugin topic
  data/TWiki/TopicCreatePlugin.txt,v	Plugin topic repository
  lib/TWiki/Plugins/TopicCreatePlugin.pm	Plugin Perl module
  lib/TWiki/Plugins/TopicCreatePlugin/Func.pm	Perl utilities

• Test if the installation was successful (Option A) - pollutes you sandbox, but easiest to try
  • Unzip the 'sandbox test' attachment in your twiki installation directory
  • Go to the topic Sandbox.CreateClientNotebook
  • Enter a name like "MyTest" and press 'create topics'
  • Press "save" on the page that appears
  • This will perform these operations:
    • Create three topics MyTest MyTestEnvironment and MyTestTripLog
    • Copy an attachment from the CreateClientNotebook topic to the created trip log
• Test if the installation was successful (Option B)
  • Create a test topic called TestTopicCreate with this content:
    %TOPICCREATE{ template="TWiki.WikiWord" topic="%TOPIC%Child" }%
  • After saving TestTopicCreate you should get a new topic TestTopicCreateChild with the content of WikiWord.

Plugin Info

Related Topics: TWikiPreferences, TWikiPlugins

-- TWiki:Main.StanleyKnutson - 21 Nov 2005