Have you tried the image widget <https://tiddlywiki.com#ImageWidget>? You
might be making this a lot more complicated than necessary...from the
letter of what you wrote all you need to do is write this in tiddler B:
<$image source={{A!!structure_file}}>
In other words, you're transcluding the value of the structure_file field
of A as the value of the source image widget.
Now if you need the tiddler A to be dynamic, rather than hard-coding it in
the wiki text, you'll have to get a bit more complicated. You might be
tempted to try this:
\define makeTransclusion() {{$(myTiddler)$!!structure_file}}
<$set name="myTiddler" value="A"> <!-- or however A gets determined -->
<$image source=<<makeTransclusion>>>
</$set>
But if you try that, you'll see the image link is broken. If you use your
browser's developer tools to inspect the image, you'll see it links
literally to "{{A!!structure_file}}".
Instead, when you add in the macro, you have to use $wikify
<https://tiddlywiki.com/#WikifyWidget>, because the macro is returning raw
wikitext, and TiddlyWiki does not automatically parse wikitext when passing
it directly to HTML/widget attributes -- only when displaying it in the
tiddler.
\define makeTransclusion() {{$(myTiddler)$!!structure_file}}
<$set name="myTiddler" value="A"> <!-- or however A gets determined -->
<$wikify name="reference" text=<<makeTransclusion>>>
<$image source=<<reference>>>
</$wikify>
</$set>
On Tuesday, November 24, 2020 at 10:37:15 AM UTC-6 Anthony wrote:
> All,
>
> I have got myself into a pickle and so confused that I can no longer see
> the wood for the trees...
>
> 1. I have two tiddlers, A and B.
> 2. Tiddler A stores information in fields about an organic compound -
> one of the fields is called 'structure_file' and gives the relative
> location of an image file.
> 3. In tiddler B I wish to load the image for the compound in tiddler
> A, which I assume is some form of a transclusion {{A!!structure_file}}.
> 4. Eric has already warned me that I cannot mix different types of
> syntax, {{...}} with [[...]], so I've been attempting to create a macro
> along the lines of another conversation (
> https://groups.google.com/g/tiddlywiki/c/bTLtqQn-1GA/m/9316shQnDAAJ).
> 5. I have failed.
> 6. I decided to stop when I received a scary red JavaScript recursion
> error...
>
> I'm sure it's not difficult but I'm beaten.
>
> Many thanks for any advice,
>
> Anthony
>
>
--
You received this message because you are subscribed to the Google Groups
"TiddlyWiki" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/tiddlywiki/717c07a3-7ff1-4ae8-b23f-634908e3cfe9n%40googlegroups.com.
