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https://github.com/Jermolene/TiddlyWiki5
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25 lines
914 B
Plaintext
25 lines
914 B
Plaintext
created: 20150908150314994
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modified: 20200618114855781
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tags: HookMechanism
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title: Hook: th-saving-tiddler
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type: text/vnd.tiddlywiki
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This hook allows plugins to inspect or modify tiddlers before they are saved via the ''confirm'' toolbar button; the hook is not invoked for tiddlers that are saved through other means, such as state tiddlers created by the ActionSetFieldWidget.
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Hook function parameters:
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* ''newTiddler'': tiddler object about to be saved
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* ''oldTiddler'': tiddler object of draft tiddler that is being saved (from v5.1.23)
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Return value:
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* tiddler object to be saved
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The original tiddler object can be returned unmodified by the hook. If the hook needs to modify the tiddler then it should return a new tiddler object, for example:
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```
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return new $tw.Tiddler(tiddler,{"my-field": value});
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```
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Hooks must not change the ''title'' field but can freely modify any other field of the tiddler.
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