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17 lines
1.4 KiB
Plaintext
17 lines
1.4 KiB
Plaintext
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chapter.of: Extending the Store
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created: 20140710184959721
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modified: 20140715084818289
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sub.num: 3
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tags: doc new
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title: System Tiddlers
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The core plug-in introduces a segregation of tiddlers.
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The tiddler model is central in the whole TiddlyWiki application and can be used in various roles.
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Because of the fact that a TiddlyWiki user works with tiddlers (taking the role of a wiki page) and tiddlers are the building blocks of the whole application (including modules, UI elements, etc.) we need to identify the internal tiddlers.
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The core plug-in introduces the concept of system tiddlers. It builds on the convention that application internal tiddler names start with ``$:/``.
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Then the core plug-in introduces a set of new functions to the wiki store which are used to retrieve tiddlers like ``getTiddlers(options)`` and ``forEachTiddler(callback, options)``.
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These functions work with all tiddlers in the store but the options parameter provides the ability to sort tiddlers by a field-name and exclude tiddlers with a specific tag.
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By default it doesn't return system tiddlers. To get a list of all tiddlers including system tiddlers, this must be requested explicitly via the options.
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If a function wants to present a list of tiddlers to the user it can use this new functions so that internal application tiddlers wouldn't clutter the resulting list.
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These functions are added via the [[wikimethod module type]].
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