[TW5] How to get the value from a field with a parameter?

[Uwe]

Hi dear helpers,

I want to get the school-week (UW) from the current calendar week (KW). In my attachment, the application/x-tiddler-dictionary tiddler [[KWUW]] holds the corresponding fields.

<<now WW>> works. I get the current calendar week.

{{KWUW!!35}} works too, it gives me the current school-week, but I have to give the calendar week manually.

Unfortunately, {{KWUW!!<<now WW>>}} doesn't work. ;-(

Is there a way to pick the school-week by using the current calendar week out of the fields?

BTW: Is there an easier solution for creating the contents of the tiddler [[Kalenderwochen und Unterrichtswochen 2017/18]]?

Greetings,

Uwe

[Eric Shulman]

On Wednesday, August 23, 2017 at 4:46:42 AM UTC-7, Uwe wrote:

I want to get the school-week (UW) from the current calendar week (KW). In my attachment, the application/x-tiddler-dictionary tiddler [[KWUW]] holds the corresponding fields.
<<now WW>> works. I get the current calendar week.
{{KWUW!!35}} works too, it gives me the current school-week, but I have to give the calendar week manually.
Unfortunately, {{KWUW!!<<now WW>>}} doesn't work. ;-(

As you have discovered, you cannot simply combine TW syntax "inline" like that.

To assemble valid TW syntax by substituting values from pieces, you use a *macro*, passing in the desired value as a parameter, like this:

\define getUW(kw) {{KWUW!!$kw$}}

and then use it like this:

<$macrocall $name="getUW" kw=<<now WW>> />

or, alternatively, you can set a variable to the desired value, and reference that variable within the macro, like this:

\define getUW() {{KWUW!!$(kw)$}}

and then use it like this:

<$vars kw=<<now WW>>> <<geUW>> </$vars>

enjoy,

-e

Eric Shulman

TiddlyTools.com "Small Tools for Big Ideas!" (tm)

InsideTiddlyWiki: The Missing Manuals

[Uwe]

Hi Eric,

thank you very much for your solution, it works as expected. (For other users: I only had to add the tag "$:/tags/Macro" to the tiddler with holds the macro.)

Attached is a new tiddlywiki with an other problem: How can I calculate the calendar-week from the school-week (see screenshot)?