[tw5] Re: Embedding tiddler title in image URL
Hi, The docs can be found at: https://tiddlywiki.com/#Transclusion%20in%20WikiText Also click the links at the end of the tiddler!! -m -- 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 tiddlywiki+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/1a811b34-a175-4fb0-bee6-63c25367a6aen%40googlegroups.com.
[tw5] Re: Embedding tiddler title in image URL
On Wednesday, June 23, 2021 at 9:17:46 AM UTC+2 cjec...@gmail.com wrote:
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.
>
We do have to do different things, that doesn't work with the same syntax.
The parser needs differences to decide what to do.
{{title}} ... is the *convenience shortcut* for <$transclude tiddler=title
/> and it produces the exact same output.
{{{ [[filter string]] }}} is the *shortcut* for <$list filter="[[filter
string]]"><$link />
-
<> is the syntax to call a macro that has to be defined with:
\define macro-name() some text
macros do only 1 thing. They substitute text.
-
\define build-url(title) https://tiddlywiki.com/#$title$
<>
With this example the parameter that is given to the macro call, will
replace the string $title$. Then the macro output is used.
\define build-url(title:Plugins)
[[https://tiddlywiki.com/#:$(currentTiddler)$ $(a)$ $(b)$ $title$]]
<$vars a=Learning b=Features>
<$tiddler tiddler="HelloThere">
<>
The code above does a similar thing. It replaces $(currentTiddler)$ with
the variable currentTiddler, that is defined by the tiddler-widget. The
same is true for "a" and "b" ... title is from the first example
The outer [[]] is needed, to be able to uses spaces between the elements.
.. If you don't have the braces the link would need to look like this.
https://tiddlywiki.com/#:$(currentTiddler)$%20$(a)$%20$(b)$%20$title$
Hope that helps a bit
-mario
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[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
Ok so I was kind of close lol. I didn't use the $(...)$ because I thought
the vars that created that in the code I had seen was specific to the
buttons. I also didn't realize that with core variables they didn't need to
be set if you were using the same name. Thanks Eric!
On Wednesday, June 23, 2021 at 12:51:52 AM UTC-4 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
wow, I'm really sorry. If you remove the enclosing [ and ] on the img tag
code and save it, at least on mine, it displays the tiddler title. So when
it was a broken img after I added the [ ] on either end I didn't think to
check to see if it was still working. Sorry about that. Also it seems that
while I was close, I think, it didn't work out too well.
On Wednesday, June 23, 2021 at 12:24:32 AM UTC-4 cjec...@gmail.com wrote:
> 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] Re: Embedding tiddler title in image URL
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] Re: Embedding tiddler title in image URL
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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