On Tuesday, August 11, 2015 at 9:40:55 PM UTC+2, Łukasz Hirt wrote:
>
> Hello guys,
>
> First of all, this is my first post here. I think TW is a great piece of
> tool, but since I am still beginner I would liek to ask you a question:
>
Hi Lukasz,
Welcome to the club :)
>
> I would like to use tiddler's caption as a description of a link. I tried
> two solutions, one works as expected, another one does not work.
> Iw ould like to know why the other one does not work.
>
>
> SOLUTION 1 - this works as expected > creates link to MY_TIDDLER but
> displays the caption of that tiddler
>
> <$link to="MY_TIDDLER"> {{MY_TIDDLER!!caption}} </$link>
>
{{}} is the notation for a transclusion. see:
http://tiddlywiki.com/#Transclusion and
http://tiddlywiki.com/#Transclusion%20in%20WikiText
This is the convenience wikitext for the $transclude widget. ...
> SOLUTION 2 - this one does not work, WHY ? Instead the caption of
> MY_TIDDLER it displays {{MY_TIDDLER!!caption}}
>
> [[{{MY_TIDDLER!!caption}}|MY_TIDDLER]]
>
see: http://tiddlywiki.com/#Linking%20in%20WikiText ... the above notation
is a "pretty link". As you found out, it treats the first part in the
brackets as the "pretty link" text. The transclusion {{}} is not evaluated.
Only the text is used. So the [[]] notation is "just" a convenience
function for the link widget. It makes it faster and easier to write but
for some edge cases it is also limited.
As you found out. For your behaviour you need the link widget, which gives
you maximum flexibility.
To make your desired function easier to read and write, you can cover it
into a macro. eg:
\define myLink(tiddler tooltip:"")
<$link to="""$tiddler$""" tooltip="""$tiddler$$tooltip$""">
<$transclude tiddler ="""$tiddler$""" field="caption">
<$view tiddler ="""$tiddler$""" field="title"/>
</$transclude>
</$link>
\end
The above function is a bit more generic. It uses the tiddler title, if
there is no caption field.
You can use it with: <<myLink noCaption>> or <<myLink "tiddler has a
caption field">>
lets say the tiddler named noCaption has no caption field. so the title is
used
lets say the "tiddler has a caption field" has one so the caption is used.
(sorry for the stupid names)
have fun!
mario
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