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Merge pull request #1777 from sukima/feature/issue-1776-clarify-edit-text-edge-case

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Make EditTextWidget docs clearer
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Jeremy Ruston 2015-06-13 17:25:44 +01:00
commit b38351a5a5
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editions/tw5.com/tiddlers/widgets/EditTextWidget.tid
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@ -31,12 +31,22 @@ The content of the `<$edit-text>` widget is ignored.
! Notes
One trap to be aware of is that the edit text widget cannot be used to edit a field of the tiddler that contains it. Each keypress results in the tiddler being re-rendered, which loses the cursor position within the text field.
One trap to be aware of is that the edit text widget //cannot be used// to edit a field of the tiddler that contains it. Each keypress results in the tiddler being re-rendered, which loses the cursor position within the text field.
Instead, place the edit text widget in a [[template|TemplateTiddlers]] that references the tiddler you want to modify.
For example, if you wanted to edit the value of the "myconfig" field of the tiddler "AppSettings", you might do so by creating a separate tiddler "ChangeAppSettings" that contains the following:
For example, if you wanted the tiddler GettingStarted to edit the value of the "myconfig" field of the tiddler "AppSettings", you might do so by creating a separate tiddler "ChangeAppSettings" that contains the following:
```
<$edit-text tiddler="AppSettings" field="myconfig"/>
```
And reference the template in any other tiddler (e.g. GettingStarted) with `{{ChangeAppSettings}}`.
This works when your use of the tiddler //is not// the AppSettings itself which would cause a recursion problem. In this latter case you have to save the fields to a temporary (or alternative) tiddler (sort of the reverse of above) like so:
```
<$edit-text tiddler="StoreAppSettings" field="myconfig"/>
```
In short the EditTextWidget //can not// change properties of the tiddler it is embedded in or part of. It can only change fields of //other// tiddlers. One could use ShadowTiddlers to accomplish the field storage if needed.