Eric and Tones,
your explanation makes things clearer and the cheat sheet helps. It just
adds to my argument though, the documentation needs to be updated. For
example, searching for concatenation provides the tiddler on using macros
for this but no mention of when using in a filter. Tones, I think your
cheat sheet should be included in the Tiddlywiki wiki documentation right
up front to make things clearer for naive users like me.
One more thing, is there a way to append a space character in the filter?
I've tried
<$action-setfield
$field="exhibition_id"
$value={{{ [{!!exhibition_id}addsuffix{"
"}addsuffix{$:/TLS/exhibition_id}] }}}
Also tried
<$list filter="[tag[Mark]]">
<$set name="spaceChar" value=" ">
<$action-setfield
$field="exhibition_id"
$value={{{
[{!!exhibition_id}addsuffix{<spaceChar>}addsuffix{$:/TLS/exhibition_id}] }}}
/>
</$list>
but the space character does not seem to be added to the field. I need a
space character between each id value.
bobj
On Monday, 28 September 2020 at 08:49:11 UTC+10 TW Tones wrote:
> Bob,
>
> There is an older resource on this here http://pv5.tiddlyspot.com however
> I will update my own abridged version and share a cheat sheet today.
>
> Regards
> Tony
>
> On Sunday, 27 September 2020 16:52:29 UTC+10, Bob Jansen wrote:
>>
>> I know and am very thankful of the many items of advice I have received
>> in the past. But I am still frustrated - there must be some core element I
>> am not understanding.
>>
>> The main issue is how to address items in wikitext, {{ [[ {{{ << < etc.
>> I know this all depends on how the item is being used but a simple cheat
>> sheet with many examples would be really useful. I don't find the
>> Tiddlywiki documentation easy to follow, bits are all over the place and
>> none of the examples address my problems I find.
>>
>> For example, why does this not work?
>>
>> <$button>
>> <$action-setfield
>> $tiddler="$:/TLS/exhibition_id"
>> $value={{!!exhibition_id}}
>> />
>> <!--append the exhibition_id to the exhibition id field in each artwork-->
>> <$list filter="[tag[Mark]]">
>> <$action-setfield
>> $field="exhibition_id"
>> $value=<<TLSconcatenate {{!!exhibition_id}}
>> {{$:/TLS/exhibition_id}}>>
>> />
>> </$list>
>>
>> Link Artworks to Exhibition
>> </$button>
>>
>>
>> The result is the string {{!!exhibition_id}} {{$:/TLS/exhibition_id}}
>> stored in the exhibition_id field of each artwork selected and not the
>> transcluded values.
>>
>> TLSconcatenate is a simple macro to concatenate two strings
>>
>> \define TLSconcatenate(head tail) $head$$tail$
>>
>> bobj
>>
>>
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