Question

I would like to be able to create child topics of any topic via the Jump box.

Currently all pages created this way appear to be children of the web main page. Actually they have no explicit parent.

WebTopicViewTemplate contains the form that creates a new topic, at this point variable %TOPIC% is the name entered in the jump box. If there is a variable that corresponds to the 'calling' page, then I know how to do the rest.

I.e. heres the url when the WebTopicViewTemplate is in use .../ExistingTopic?topic=NewTopic

Is there a variable that corresponds to "ExistingTopic".

I have a solution that works by including a form in a page, see CreateChildTopicExample

I'd like to be able to construct links in WebTopicViewTemplate in a similar way

• continue to create NewTopic as a child of ExistingTopic
• continue to create NewTopic as a child of ExistingTopic using ExistingTopicTemplate (if it exists)

I think the code would look something like this.

 %MAKETEXT{"Continue to *[[[_1]][create topic ![_2]]]* as child of [_3]" 
     args="%SCRIPTURLPATH{"edit"}%/%WEB%/%TOPIC%?topicparent=%CALLINGTOPIC%,  
    %TOPIC%,
    %CALLINGTOPIC% }%

Environment

-- EliotBlennerhassett - 31 Aug 2006

Updated, minor clarification

-- EliotBlennerhassett - 03 Oct 2006

Answer

In lieu of finding a variable to function as my %CALLINGTOPIC%, I edited the WebTopBar, adding a hidden parameter to the Jump form that conveys the name of the parent page:

   * <form name="jumpForm" action="%SCRIPTURLPATH{"view"}%/%BASEWEB%/%BASETOPIC%">
      < input id="jumpFormField" type="text" 
          class="twikiInputField patternFormFieldDefaultColor" 
          name="topic" 
          size="14" 
          value="%MAKETEXT{"Jump or Create"}%" 
          onfocus="clearDefaultandCSS(this);" 
          onblur="setDefaultText(this);" 
     />
     < input id="jumpForm" 
         type="hidden" 
         name="parent" 
         value="%BASETOPIC%"/>
</form>

Then in the WebTopicViewTemplate, I can refer to this using URLPARAM

   * %MAKETEXT{"Continue to *[[[_1]][create topic ![_2]]]* with parent [_3]"
args="%SCRIPTURLPATH{"edit"}%/%WEB%/%TOPIC%?topicparent=%URLPARAM{"parent"}%, 
%TOPIC%, 
%URLPARAM{"parent"}%" }%

   * Continue to 
[[%SCRIPTURLPATH{"edit"}%/%WEB%/%TOPIC%?
    topicparent=%URLPARAM{"parent"}%&
    templatetopic=%URLPARAM{"parent"}%Template]
 [create topic %TOPIC%]] 
with parent %URLPARAM{"parent"}%, 
Template %URLPARAM{"parent"}%Template _<- only if this link valid_

Supplementary question: Is it possible to have a conditional that is based on the existence of a topic? IF{ "exists TopicTemplate" THEN "true cond" }

-- EliotBlennerhassett - 03 Oct 2006

Thanks for sharing. You can test for existance of the current topic with %IF{ "contect new_topic" ... }%. If you want to check for existence of an arbitrary topic use SpreadSheetPlugin with EXISTS: %CALC{ "$IF($EXISTS(FooBar), true action, false action)" }%

-- PeterThoeny - 03 Oct 2006