Tool to create direct tiddler links which do not break after the change of the tiddler title

[Vytas]

Hello,

After a long pause from TiddlyWiki, I came back to simplify my tool (https://groups.google.com/d/msg/tiddlywiki/DiowJLeoJbw/igirhRHYAQAJ) of creating solid links to tiddlers with the help of a "link button" in the View Toolbar. The tool functions through the id field and it is really easy to use.

a) If you want to create a link to the tiddler named Present tiddler title (created 20190208203055849) AND having no "id" field value, just click the "link button" in the View Toolbar of this tiddler. This will set the "id field" to "2019-02-08-Present tiddler title-22:30:55-849ms" AND will copy <<linkto "2019-02-08-Present tiddler title-22:30:55-849ms">> to clipboard. Now, you can paste this macro into some other tiddler to get a a direct link to Present tiddler title. If the id value would appear to be not unique (e.g., if you clone a tiddler), the macro will provide the link to the oldest tiddler which has the above mentioned id.   

b) If "Present tiddler title" already HAS an id field value (assume it is equal to any_preferably_unique_id_591), clicking the "link button" in the View Toolbar will copy <<linkto "any_preferably_unique_id_591">> to clipboard.

To try out the tool, create a tiddler (tagged with $:/tags/Macro and $:/tags/ViewToolbar) with the following body text:

\define linkto(idvar1)
<$list filter="[field:id[$idvar1$]!has[draft.of]limit[1]]"/>
\end

\define linkto2(idvar)
<<linkto "$idvar$">>
\end

\define id_value() $(cr_date)$-$(curr_title)$-$(cr_time)$-$(cr_msec)$ms

\define link_via_id(check_id, copy_id, if_no_id)
<$list filter="$check_id$ +[limit[1]]" name=act emptyMessage=<<$if_no_id$>>>
<<$copy_id$>>
</$list>
\end

\define copy_id()
<$action-sendmessage $message="tm-copy-to-clipboard" $param=<<linkto2 "$(idvar)$">>/>
\end

\define if_no_id()
<$action-setfield $tiddler=<<currentTiddler>> id=<<id_value>>/>
<$action-sendmessage $message="tm-copy-to-clipboard" $param=<<linkto2 "$(id_value)$">>/>
\end


<$button tooltip="Set id (if no id field exists) & copy a link" aria-label="Set id (if no id field exists) & copy a link" class=<<tv-config-toolbar-class>>>
<$wikify name=cr_date text='<$view  tiddler=<<currentTiddler>> field="created" format="date" template="YYYY-0MM-0DD"/>'>
<$wikify name=cr_time text='<$view  tiddler=<<currentTiddler>> field="created" format="date" template="0hh:0mm:0ss"/>'>
<$wikify name=cr_msec text='<$view  tiddler=<<currentTiddler>> field="created" format="date" template="XXX"/>'>
<$set name="curr_title" tiddler=<<currentTiddler>> field="title">
<$set name="idvar" tiddler=<<currentTiddler>> field="id">
<<link_via_id "[title[$(currentTiddler)$]has[id]]" copy_id if_no_id>>
</$set>
</$set>
</$wikify>
</$wikify>
</$wikify>
{{$:/core/images/link}}
</$button>

You can provide this tiddler with the following fields:

caption: {{$:/core/images/link}} (Set id) & copy a link

description: Set the id field (if it does not exist) of this tiddler and copy a link to clipboard

By the way, I don't know how to make the caption show up, as long as the "link button" is put under More actions in the View Toolbar..  

[Mohammad]

Hello,

 This is simple but very handy tool. 

A minor comment: When you delete a tiddler already refereed by <<linkto "">> somewhere, there is nothing to show and I recommend to display a massage or much better handle it as missing tiddler, on click you can create it.

Have a look also to https://wikilabs.github.io/editions/uni-link/ by Mario.

[Vytas]

Mohammad,

Thanks for making the point. I can just write:

 

<$list filter="[field:id[$idvar1$]!has[draft.of]limit[1]]" emptyMessage="''//missing tiddler//''"/>

instead of 

<$list filter="[field:id[$idvar1$]!has[draft.of]limit[1]]"/>

Then, <<linkto "non_existent_id">> will render as missing tiddler when the corresponding tiddler does not exist. 

However, I don't know how to "handle it as missing tiddler". Do you have any ideas?

I am aware of Mario's plugin. One of my motivations was not to be forced to remember titles, aliases or ids. So, you can use a descriptive title (which you can change without being punished) to find the tiddler you want to link to and then just copy a link to that tiddler with a click of a button. Big advantage is that you do not have to enter aliases or ids by hand: one click of button creates a very readable and informative id (in terms of wikitext readability) and copies a link. Moreover, you do not have to create ids for every single tiddler. You just need ids for those tiddlers you want to create direct links to. So, you naturally create an id once you want to link to it. At that moment, tiddler title is already set and plays its descriptive role, which you can make use of by one click of a button.

[Mohammad]

Hello Vytas,

 One solution is the linkto macro creates the link in any case. So, Tiddlywiki will take care of links to missing tiddlers (show them as italic blue).

I mean the macro should have an output.

--Mohammad

[Vytas]

Mohammad,

as you pointed to Mario's uni-link plugin, I made a version of my tool, where in case of a missing "id field" value, the "link button" creates an id (2019-02-08-Present tiddler title-22:30:55-849ms) AND a new alias equal to that id AND copies a corresponding link of the uni-link form ("[[2019-02-08-Present tiddler title-22:30:55-849ms|?t]]") to clipboard. 

In case there is a non-empty "id field" value, the "link button" will copy "[[2019-02-08-Present tiddler title-22:30:55-849ms|?t]]") to clipboard (it is assumed that one of the aliases is equal to the "id field" value).

So, the following tiddler (tagged with $:/tags/Macro and $:/tags/ViewToolbar) could be useful to the uni-link users:

\define id_value() $(cr_date)$-$(curr_title)$-$(cr_time)$-$(cr_msec)$ms


\define new_aliases_value()
$(old_aliases_value)$ [[$(id_value)$]]
\end


\define text_for_clipboard()
[[$(id_value)$|?t]]
\end


\define link_via_id(check_id, copy_link, if_no_id)

<$list filter="$check_id$ +[limit[1]]" name=act emptyMessage=<<$if_no_id$>>>

<<$copy_link$>>
</$list>
\end


\define copy_link()
<$action-sendmessage $message="tm-copy-to-clipboard" $param=<<text_for_clipboard>>/>

\end


\define if_no_id()
<$action-setfield $tiddler=<<currentTiddler>> id=<<id_value>>

/>
<$action-setfield $tiddler=<<currentTiddler>> aliases=<<new_aliases_value>>/>
<$action-sendmessage $message="tm-copy-to-clipboard" $param=<<text_for_clipboard>>/>

\end


<$button tooltip="Set id (if no id field exists) & copy a link" aria-label="Set id (if no id field exists) & copy a link" class=<<tv-config-toolbar-class>>>
<$wikify name=cr_date text='<$view  tiddler=<<currentTiddler>> field="created" format="date" template="YYYY-0MM-0DD"/

>'>
<$wikify name=cr_time text='<$view  tiddler=<<currentTiddler>> field="created" format="date" template="0hh:0mm:0ss"/>'>
<$wikify name=cr_msec text='<$view  tiddler=<<currentTiddler>> field="created" format="date" template="XXX"/>'>

<$set name="curr_title" tiddler=<<currentTiddler>> field="title">

<$set name="old_aliases_value" tiddler=<<currentTiddler>> field="aliases">
<<link_via_id "[title[$(currentTiddler)$]has[id]]" copy_link if_no_id>>