[tw5] Re: Embedding tiddler title in image URL
Hey, cool! The $(..)$ syntax was the key. It also works within tiddler
transclusion, e.g., {{$(currentTiddler)$ Discussion}}, which allowed me to
finished the template. My main tiddlers now just have the single line
<> and everything works.
Mini-rant: all these different syntaxes are just a tad confusing :)
Sometimes {{..}}, sometimes {{{..}}}, sometimes <<..>>, sometimes $(..)$,
probably others I haven't stumbled on yet. Hard to keep track.
Thanks to both of you for your help!
--nathanael
On Wednesday, June 23, 2021 at 12:51:52 PM UTC+8 Eric Shulman wrote:
> On Tuesday, June 22, 2021 at 7:45:51 PM UTC-7 cjec...@gmail.com wrote:
>
>> ...embed the tiddler title in the url, i.e.:
>>
> [img[images/{{!!title}}.jpg]]
>> But of course that just gets read literally. I've also tried using a
>> variable with the same result:
>> <$set name="image" value="images/{{!!title}}.jpg">
>> [image[<>]]
>>
>>
>
> The problem is that you can't directly mix field transclusion syntax,
> e.g., {{!!fieldname}}, within other wiki syntax, e.g., [img[...]]
>
> The solution is to define a macro that constructs the desired wiki image
> syntax, like this:
> \define showImage() [img[images/$(currentTiddler)$.jpg]]
> Then, invoke it like this:
> <>
>
> Notes:
> * By default, within each tiddler, the variable "currentTiddler" holds the
> name of the tiddler
> * In normal tiddler content, you can use either {{!!title}} or
> <> to *display* the name of the tiddler
> * Within the macro definition, $(...)$ does a *text substitution* of the
> indicated variable, where the variable is defined *outside* the macro
> * After variable substitutions are done, the resulting macro content is
> "returned" for rendering
> * Thus, if the above macro is invoked within a tiddler named "Tiddler1",
> the macro content returned by <> will be:
> [img[images/Tiddler1.jpg]], which is the syntax you want.
> * To use <> in multiple tiddlers, just place the showImage()
> macro definition in a tiddler by itself (e.g., "ShowImageMacro"), and then
> tag that tiddler with *$:/tags/Macro*.
>
> Also, as an alternative to using a macro definition to construct the
> desired syntax, you could use the <$image> widget with a parameter value
> that is assembled using "filtered transclusion", like this:
><$image source={{{ [[images/]addsuffixaddsuffix[.jpg]]
> }}} />
> However, this syntax is obviously more complex to produce the exact same
> result.
>
> enjoy,
> -e
>
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[tw5] Re: Embedding tiddler title in image URL
Thanks for the quick reply, and for the code.
Unfortunately, it's not working for me. Here's what I've done.
1. Download a fresh copy of Tiddlywiki
2. Create a tiddler called "Test".
3. Copy/paste your code into "Test" and save.
I end up with a broken image icon. When I right click and choose "open
image in new tab", I get the link:
http://mysite.com/dir/images/%7B%7B!!title%7D%7D.jpg
It's still interpreting {{!!title}} literally.
--Nathanael
On Wednesday, June 23, 2021 at 11:14:15 AM UTC+8 iamdar...@gmail.com wrote:
> I think this is what you're looking for? There may be a better way to do
> it, but it seems to function based on my tests. Thanks to everyone over the
> last two weeks that have helped me so much! I wouldn't have been able to
> answer someone's question like this otherwise.
>
> \define linkcreation()
> [img[images/{{!!title}}.jpg]]
> \end
>
> <>
>
> On Tuesday, June 22, 2021 at 10:45:51 PM UTC-4 cjec...@gmail.com wrote:
>
>> Long time lurker, first time poster.
>>
>> I've a wiki with a couple of hundred tiddlers all of the same format,
>> just different content, so I'm trying to develop a tiddler template.
>>
>> Each tiddler displays an image specific to that tiddler. I've a directory
>> in which all the images are kept, each with the same name as the tiddler
>> {{!!title}} field. E.g.:
>>
>> images/Tiddler1.jpg
>> images/Tiddler2.jpg
>> images/Tiddler3.jpg
>>
>> They idea is to then embed the tiddler title in the url, i.e.:
>>
>> [img[images/{{!!title}}.jpg]]
>>
>> But of course that just gets read literally. I've also tried using a
>> variable with the same result:
>>
>> <$set name="image" value="images/{{!!title}}.jpg">
>> [image[<>]]
>>
>>
>> How can I do this?
>>
>> --Nathanael
>>
>>
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[tw5] Embedding tiddler title in image URL
Long time lurker, first time poster.
I've a wiki with a couple of hundred tiddlers all of the same format, just
different content, so I'm trying to develop a tiddler template.
Each tiddler displays an image specific to that tiddler. I've a directory
in which all the images are kept, each with the same name as the tiddler
{{!!title}} field. E.g.:
images/Tiddler1.jpg
images/Tiddler2.jpg
images/Tiddler3.jpg
They idea is to then embed the tiddler title in the url, i.e.:
[img[images/{{!!title}}.jpg]]
But of course that just gets read literally. I've also tried using a
variable with the same result:
<$set name="image" value="images/{{!!title}}.jpg">
[image[<>]]
How can I do this?
--Nathanael
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