Evan,
Thanks again for your work.
To the point : *So I suppose I am asking, "can the treatment of empty or
blank date fields be restored?", or could you "tell me a way to treat such
fields to avoid the errors?"*
I will return to blank dates shortly.
*Date Format*
First, removing the trailing "00" or using 000 does indeed let a date
display correctly THANKYOU
I was erroneously setting dates to one digit short
<$action-setfield $field=date-field $value=<<now YYYY0MM0DD0hh0mm0ss000>>
$timestamp=no />
Previously however this was tolerated. As was a date field with only the
date YYYY0MM0DD and other combinations (I have not retested)
*Blank dates*
This behaviour has changed, I am now getting these errors below when
previously use of date fields that had empty or a single space in the date
field were tolerated and no result was returned,
ComputeError: Cannot auto-convert "" to a date!
ComputeError: Cannot auto-convert " " to a date!
I was using the existence of a date-field to trigger the display, time
stamp or edit of that and other fields
- For example if item-started existed it allows you to "select, enter or
time stamp the date" item-started
- Basically the existence of item-started indicates the tiddler is now
under disposition management (regardless of its value or not)
- It also provides the ability to optionally provide a item-completed or
item-cancelled dates
- If I accidentally cancelled the item and cleared the item-cancelled
date, to instead set the completed date, I would have a blank cancelled
date field.
*Why permit " " dates*
If I am using the existence of a date field empty or otherwise I use a
filter that includes has[fieldname]
Of note was that this has[fieldname] filter often seemed only to work when
the field existed and was not empty, hence the use of " "
On example of where formulas was tolerant of blank and space was in the
following, which calculates the number of days between the date-fields
value and today.
\define daystoday(datefield)
(= days( now(), date( {{!!$datefield$}} ) ) =)
\end
Other examples, It is fine for these to return nothing
(= if(tw_date({{!!$datefield$}})=now(),"Today","Not Today") =)
\define showtodayrange(datefield1,datefield2)
<progress value=<<formula "days( date( {{!!$datefield1$}} ) , now() )">>
max=<<formula "days( date( {{!!$datefield1$}} ) , date( {{!!$datefield2$}}
))">>/>
\end
<$if value=(={{!!$datefield$}}=)>
Has value (=date({{!!$datefield$}})=)
<$set name=indate value= (=date({{!!$datefield$}})=)>
</$if>
<$else>
No Value (={{!!$datefield$}}=)
<$set name=indate value=(=now()=)>
</$else>
The above also seems broken, using The *Condition* plugin for TiddlyWiki,
version 0.1.0 (disabled or not)
*So I suppose I am asking, "can the treatment of empty or blank date fields be
restored?", or could you "tell me a way to treat such fields to avoid the
errors?"*
Thanks in advance,
Tony
On Sunday, February 4, 2018 at 12:54:42 PM UTC+11, Evan Balster wrote:
>
> Hey all —
>
> Formula 0.2.2 is out: https://evanbalster.com/tiddlywiki/formulas.html
> GitHub: https://github.com/EvanBalster/TiddlyWikiFormula
>
> Changes:
>
> - Fixed a bug in the parsing of /* block comments */. // line comments
> also
> work.
> - Implemented regular expression literals in the JavaScript style:
> /regex/g
> - May be used as a Datum
> <https://evanbalster.com/tiddlywiki/formulas.html#Datum>
> - When converting strings to regex, both JavaScript and TiddlyWiki
> styles will be recognized.
> - Formula errors now mention LET assignments they lie inside.
> - Formulas as Tag Attributes
>
> <https://evanbalster.com/tiddlywiki/formulas.html#Formulas%20as%20Tag%20Attributes>
> are
> now facilitated by a mod using the experimental Mod-Loader Plugin
> <https://evanbalster.com/tiddlywiki/formulas.html#Mod-Loader%20Plugin>.
>
>
> *Tony* — I fixed some coercion bugs in 0.2.1 but I'm not sure if those
> cover the issues you're reporting.
>
> The blank definitely won't be treated as a date (what would it default to,
> anyway?)
>
> As for the other one, 2017122410592500 isn't quite a valid TiddlyWiki date
> under current semantics.
>
> *2017 12 24 10 59 25 00*
>
> The last bit (milliseconds) should be either 3 digits or completely
> absent. AFAIK TiddlyWiki dates are never expressed to "centisecond"
> precision so this looks out of place to me. I'm strict about what Formula
> interprets as a date, because these strings of digits could also be numbers.
>
>
> *BurningTree* — that's a nice looking spreadsheet UI. Consider your
> experimentation encouraged!
>
>
> On Friday, 2 February 2018 22:30:02 UTC-6, BurningTreeC wrote:
>>
>> Hi Evan,
>>
>> I've found this *handsontable* library and tried making a basic widget
>> here: spreadsheet widget
>> <http://muritest.tiddlyspot.com/#hot%20spreadsheet:%5B%5Bhot%20spreadsheet%5D%5D%20%5B%5Bthe%20tap%20widget%5D%5D%20%5B%5Bthe%20swipe%20widget%5D%5D%20%5B%5BThe%20widthreveal%20macro%5D%5D%20%5B%5BThe%20wheelreveal%20macro%5D%5D%20%5B%5BPredefined%20layouts%5D%5D%20%5B%5BThis%20is%20a%20preview%20for%20what's%20coming%20with%20v0.1.2%5D%5D%20%5B%5Bmy%20creator%20invented%20the%20touchscreen%5D%5D%20%5B%5BHow%20to%20get%20this%20on%20your%20pc%2C%20laptop%20or%20mobile%20device%5D%5D%20%5B%5B4%20TAP%20to%20Tiddler%20MODAL%20and%20LONG%20PRESS%20to%20open%20sidebar%5D%5D%20%5B%5Bautopopulate%20this%20wiki%20with%20images%5D%5D%20%5B%5BCeci%20n%E2%80%99est%20pas%20une%20pipe.%5D%5D%20%5B%5BI%20am%20Mr.%20Van%20Gogh%5D%5D%20%5B%5BI%20am%20one%20of%20that%20guy's%20paintings%5D%5D%20seamless%20%5B%5Bthe%20best%3A%20you%20can%20drag%2010%20Tiddlers%20at%20once.%5D%5D%20%5B%5Bwatch%20muuri%20in%20different%20colors%5D%5D%20%5B%5Brun%20to%20the%20hills!%5D%5D%20%5B%5BThat's%20the%20way%20I%20like%20it!%5D%5D%20%5B%5Bthe%20best%20louvre%20moment%5D%5D%20%5B%5Bmuuri%20is%20the%20finnish%20word%20for%20wall%5D%5D%20%5B%5Banalogue%20clock%5D%5D%20%5B%5Bmuuri%2C%20muuri%20-%20what's%20this%20muuri-bla%20all%20about%3F%5D%5D%20%5B%5Bsave%20wiki%20button%5D%5D%20%5B%5Ba%20little%20bit%20of%20transparency%5D%5D>
>>
>> The docs <https://docs.handsontable.com/0.35.1/Core.html> look promising
>> and the interface is very nice - the license is MIT
>>
>> Simon
>>
>
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