Hi Folks,
In the following macro I can simply generate fieldname=value pairs for all
fields in the current tiddler, similar to how one would use the vars
widget. It is handy because it only list the existing fields, however many
they are. You do not need explicit set or Var statements.
- We could use this to pass field names and values say in a new tiddler
button, which I have done before.
- You can also use it to pass variables to a modal
However I do not know how to use this or a similar method to convert these
to actual variables for use in the current tiddler.
The issue is one needs to use either the set or vars parameter.
- The set required as many `</$set>` close statements as fields.
- The vars needs only an open and close
- However placing `<<field-value-pairs>>` inside a $vars widget - does
not work
\define field-value-pairs()
\whitespace trim
<$list filter="[all[current]fields[]] -[[text]] -[[title]]" variable=
fieldname>
{{{ [<fieldname>addsuffix[-var]] }}}=<$text text={{{ [all[current]get
<fieldname>addprefix["""]addsuffix["""]] }}}/><br>
</$list>
\end
<<field-value-pairs>>
If you look inside $:/core/ui/ViewTemplate you can see how the variable
storyTiddler is set, it then retains its value within the current story
Tiddler. Because the loaging of each tiddler is wrapped in the vars
statement. I wonder if this is a place to put this? At least for tiddlers
with a flag/tag/filed on them.
The alternative is define statements which also are not generated
programmatically. I suppose with a trigger you could generate a tiddler
full of defines and import that, but you will still need a trigger. We
could use a trigger on "open tiddler" if one were available via the
navigator mechanism.
Any Gurus up to this challenge?
*Why?*
Because I have come across a few cases where this would be useful, such as;
- Creating a tiddler text template in a define where all values can use
the same notation eg $(varname)$
- Rather than set such variable as needed, have them all available using
a single method.
- Avoid the need to complicate the wikitext with both {{!!fieldname}}
and <<fieldname>> references inside and outside filters.
I look forward to an inventive solution (If I do not come up with one first)
Regards
Tony
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