tag trees

[David Andel]

Hi all

So far I like TW5 very much.

One thing I have been looking for I could not find: I would like to be able to sort tags into tree structures. And then show all tiddlers which e.g. have a tag which is a person, or a city. I thought this may be doable by TagglyTagging but don't see a clear way yet.

Is this already doable or is it planned for the core of TW5? Or would such a thing be implemented as a plugin?

Thanks and cheers,
David

[Jeremy Ruston]

Hi David

There's no built in support for tag trees per se, but I think the necessary components are in place.

Lets assume we have a bunch of tiddlers that are tagged, and that those tags are either tagged "person" or "city".

In TW5, you can transclude a list of tiddlers with triple curly braces around a tiddler filter. This gives you all the tags that are tagged "person":

{{{ [tag[person]] }}}

This gives you all the tiddlers tagged with tags that are tagged "person":

{{{ [tag[person]tagging[]] }}}

Finally this one gives you all the tiddlers tagged with tags that are tagged by tags that are tagged "person":

{{{ [tag[person]tagging[]tagging[]] }}}

Things get a bit more interesting if we introduce templates. Assume that this is the text of a tiddler called "HierarchicalTagTemplate":

<div style="padding:1em;">

<$transclude template="$:/core/ui/TagTemplate"/>

{{{ [is[current]tagging[]] ||HierarchicalTagTemplate}}}

</div>

Then we can display a tree of tags from a particular root like this:

<$transclude template="TestTemplate" target="RootTag"/>

Right now, TW5 will go into an infinite loop if you have a circular tagging loop; which needs fixing.

There is documentation about the filter syntax here:

http://five.tiddlywiki.com/static/TiddlerFilters.html

And documentation about list transclusion here:

http://five.tiddlywiki.com/static/WikiText.html

Best wishes

Jeremy

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--
Jeremy Ruston
mailto:jeremy...@gmail.com

[Leo Razoumov]

On Fri, Aug 2, 2013 at 12:45 PM, Jeremy Ruston <jeremy...@gmail.com> wrote:
> [..snip..]]

> Finally this one gives you all the tiddlers tagged with tags that are tagged
> by tags that are tagged "person":
>

My mind exploded right there :-)

--Leo--