Gerald,
As I expected by breaking down the problem into steps, in my first example
then using this reference <https://tiddlywiki.com/#Filter%20Operators>it
was much easier to generate a final result.
{{{ [<currentTiddler>split[ ]butfirst[]split[-]reverse[]join[.]addprefix[ ]
addprefix{!!caption}] }}}
Your example was easy to test on tiddlywiki.com
In this case I use butfirst to get the second part of the title (the Date)
so the one filter can pass only the date to the next part.
If you remove something in a filter (in this case from the title) you can
allways add content back using addprefix/addsuffix and more, in this case
we addprefix your caption.
Regards
Tony
On Tuesday, March 24, 2020 at 8:28:32 AM UTC+11, TonyM wrote:
>
> Gerald,
>
> I have responded to you requirement rather than continue with your method.
> I expect we could fix you method because there are some errors in your
> filter(s).
>
> My approach was to deal with each step individually and capture
> intermediate values.
>
> I hope my english is simple enough.
>
> The following works
> \define new-title() {{!!caption}} <<new-date>>
> <$set name=title-date filter="[<currentTiddler>split[ ]]" select=1>
> <$set name=new-date filter="[<title-date>split[-]reverse[]join[.]]">
> title-date=<<title-date>><br>
> new-date=<<new-date>><br>
> <<new-title>>
> </$set></$set>
>
> With an explanation, each note relates to above
> \define new-title() {{!!caption}} <<new-date>>
> <!-- using the new-title macro to "concatenate" multiple values -->
>
> <$set name=title-date filter="[<currentTiddler>split[ ]]" select=1>
> <!-- Using set/filter to split the currentTiddler title by space and use
> the select=1 to retrieve the 2nd item the title-date
> (the first item is select=0) -->
>
> <$set name=new-date filter="[<title-date>split[-]reverse[]join[.]]">
> <!-- as determined previously saved as new-date -->
>
> title-date=<<title-date>><br>
> new-date=<<new-date>><br>
> <!-- Display the results for your information -->
>
> <<new-title>>
> <!-- the desired result -->
>
> </$set></$set><!-- close the above set widgets -->
>
> You could split the `<<title-date>>` with split[-] and use select 0,1 and
> 2 to retrieve year month day if you wanted to use them.
>
> I will now consider bringing it together in one filter.
>
> Regards
> Tony
>
> On Monday, March 23, 2020 at 11:11:56 PM UTC+11, Gerald Weis wrote:
>>
>> Hello,
>>
>> i give an example
>>
>> Name of the Tiddler
>> *Körpertyp: 2020-03-11*
>>
>> introduction of the caption
>> *Messwert am*
>>
>> string to split
>> *2020-03-11*
>> indicatet string: *11.03.2020*
>> caption complete
>> * Messwert am 11.03.2020*
>>
>> Also from the tiddlertitle* Körpertyp: 2020-03-11 *i want to have the
>> * Date-string (YYYY-MM-DD).*
>> then i must have the split reverse for the date make* in
>> Date-german-format (DD.MM.YYYY)*
>> The caption should be
>> * Messwert am (Date-german-format)*
>>
>> and it is a lot of tiddler with this titlestructure..
>> *question: *Is it possible to have an filter like
>>
>> {{{ [<currentTiddler>removeprefix[Körpertyp:]][split[-]reverse[]join[.]]
>> }}}
>>
>> thats dont work
>>
>>
>> Am Montag, 23. März 2020 11:44:31 UTC+1 schrieb TonyM:
>>>
>>> Gerald,
>>>
>>> If what you intended worked, the result would be;
>>>
>>> [[<currentTiddler>removeprefix[Körpertyp:]]split[-]reverse[]join[.]]
>>> Both [[ and ]] are invalid
>>>
>>> Another problem I see is because variables inside filters, and fields
>>> etc.... only use one set of brackets
>>> <$vars datum={{{ [<<datum0>>split[-]reverse[]join[.]] }}} >
>>> Would be
>>> <$vars datum={{{ [<datum0>split[-]reverse[]join[.]] }}} >
>>>
>>> In filters only one bracket is required, but outside two brackets are
>>> needed otherwise they would be confused with HTML tags `<p>` etc...
>>>
>>> Lets see if that gets you any further.
>>>
>>> Bu the way one way to combine filters is using the subfilter operator
>>> https://tiddlywiki.com/#subfilter%20Operator
>>>
>>> If you are still lost perhaps explain what you want rather than how it
>>> does not work.
>>>
>>> Regards
>>> Tony
>>>
>>>
>>> On Monday, March 23, 2020 at 9:25:40 PM UTC+11, Gerald Weis wrote:
>>>>
>>>> Hi friends,
>>>>
>>>> i am trying to combine 2 filters.
>>>>
>>>> but its don't work
>>>>
>>>> thats my code and i don't know whats wrong.
>>>>
>>>> \define tabcaption()
>>>> <caption>Messergebnis am
>>>> <$vars datum0={{{ [<currentTiddler>removeprefix[Körpertyp:]] }}} >
>>>> <$vars datum={{{ [<<datum0>>split[-]reverse[]join[.]] }}} >
>>>> <<datum>>
>>>> </$vars>
>>>> </$vars>
>>>> </caption>
>>>> \end
>>>>
>>>> Whats my Mistake
>>>>
>>>> Tahnks for Help
>>>>
>>>
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