Hi everybody,
the struggle to get TW do what I want it to do goes on hopelessly.
I have a database of systems described by one data tiddler each, like this:
system_1
tag: system
feature 11: Y/N
feature 12: Y/N
feature 13: Y/N
feature 14: Y/N
system_2
tag: system
feature 21: Y/N
feature 22: Y/N
feature 23: Y/N
feature 24: Y/N
as you can easily guess, the tiddlers record what features system X
supports or not.
Now I want to flexibly query my database for a certain feature, so I came
up with this code:
\define check_feature(feature) [getindex[$feature$]trim[]match[Y]]
<$set name="has_feature" value=<$macrocall $name='check_feature'
feature='IFTTT'/> >
<ul>
<$list filter="[tag[system]filter<has_feature>]" variable="sys">
<li> <$link to=<<sys>>> <<sys>> </$link> </li>
</$list>
</ul>
</$set>
(in the example above I'm checking which systems are supported by IFTTT as
you can imagine...). Fair enough, the above code DOESN'T work, because you
cannot put a <$macrocall> widget as right-side element of the 'value'
element of a <$set> widget. Ok, so how do I go? I know I could instead
write:
<$set name="has_feature" value=<<check_feature IFTTT>> >
and that would work, but I need to use the <$macrocall> widget because the
next step is to make the 'feature' parameter dynamically chosen via a
<$select> instruction, so I would need to call the macro as below:
<$macrocall $name='check_feature' feature={{!!current_chosen_feature}}/>
where of course field 'current_chosen_feature' wouldbe set by the <$select>
widget.
Thanks in advance for helping. More and more TW seems to me like a too much
beautiful, too much independent woman: you love her but you cannot make her
listen to you...
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