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75 lines
2.5 KiB
Plaintext
75 lines
2.5 KiB
Plaintext
caption: Transclusion
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created: 20131205160146648
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modified: 20240102070417483
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tags: WikiText
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title: Transclusion in WikiText
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type: text/vnd.tiddlywiki
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! Introduction
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You can incorporate the content of one tiddler within another using the [[Transclusion]] notation:
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* `{{MyTiddler}}` transcludes a single tiddler
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* `{{MyTiddler||TemplateTitle}}` displays the tiddler through a specified [[TemplateTiddler|TemplateTiddlers]]
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* `{{||TemplateTitle}}` displays the specified template tiddler without altering the [[current tiddler|Current Tiddler]]
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* `{{MyTiddler|Parameter}}` transcludes a single tiddler with a single parameter
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* `{{MyTiddler||TemplateTitle|Parameter|SecondParameter}}` transcludes a single tiddler through a specified [[TemplateTiddler|TemplateTiddlers]] with two parameters
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!! Transcluding Text References
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You can also use a TextReference instead of a tiddler title:
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* `{{MyTiddler!!field}}` transcludes a specified field of a tiddler
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* `{{!!field}}` transcludes a specified field of the current tiddler
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* `{{MyTiddler##index}}` transcludes a specified indexed property of a [[DataTiddler|DataTiddlers]]
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* `{{##index}}` transcludes a specified indexed property of the current [[DataTiddler|DataTiddlers]]
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!! Filtered Transclusion
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A similar syntax can be used to generate or transclude a list of tiddlers matching a specified [[filter|Filters]]:
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```
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{{{ [tag[mechanism]] }}}
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{{{ [tag[mechanism]]||TemplateTitle }}}
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```
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In contrast to [[Filtered Attribute Values]], all items matching the filter are transcluded and not only the first.
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!! Generated Widgets
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The WikiText transclusion syntax generates a TiddlerWidget wrapped around a TranscludeWidget. For example, `{{MyTiddler||TemplateTitle}}` generates the following pair of widgets:
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```
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<$tiddler tiddler="MyTiddler">
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<$transclude $tiddler="TemplateTitle"/>
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</$tiddler>
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```
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The filtered transclusion syntax `{{{ [tag[mechanism]] }}}` generates the following widgets
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```
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<$list filter="[tag[mechanism]]">
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<$link />
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</$list>
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```
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or, when used with a template, `{{{ [tag[mechanism]]||TemplateTitle }}}` expands to
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```
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<$list filter="[tag[mechanism]]">
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<$transclude tiddler="TemplateTitle" />
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</$list>
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```
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<<.tip "Install the //Internals// plugin to enable the display of the generated widget tree in the preview pane of the editor">>
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---
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See also:
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* [[Transclusion Basic Usage]]
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* [[Transclusion with Templates]]
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* TemplateTiddlers
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* TranscludeWidget
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* [[Transclusion and Substitution]]
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* [[WikiText parser mode: transclusion examples]]
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