@save"
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=Syntax= | =Syntax= | ||
| − | < | + | <code>@save(</code> ''[EL-expression], [conditionKeyword]=[EvaluateOnce EL-expression] '' <code>)</code> |
= Description = | = Description = | ||
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'''Purpose:''' Restrict binder to save data to ViewModel only, no loading. | '''Purpose:''' Restrict binder to save data to ViewModel only, no loading. | ||
| − | You usually use this syntax when you want to save and load data in different conditions, you should write both < | + | You usually use this syntax when you want to save and load data in different conditions, you should write both <code>@save</code> and <code>@load</code> in an attribute. You have to use it in form binding to save upon a command. |
; ''[conditionKeyword]=[EvaluateOnce EL-expression]'' | ; ''[conditionKeyword]=[EvaluateOnce EL-expression]'' | ||
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;''[EvaluateOnce EL-expression]'' | ;''[EvaluateOnce EL-expression]'' | ||
: The evaluation result must be one or more command name. | : The evaluation result must be one or more command name. | ||
| − | : Command name must correspond to the name specified in Java annotation < | + | : Command name must correspond to the name specified in Java annotation <code>@Command</code> in a ViewModel. |
= Example = | = Example = | ||
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=Version History= | =Version History= | ||
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| − | {| | + | {| class='wikitable' | width="100%" |
! Version !! Date !! Content | ! Version !! Date !! Content | ||
|- | |- | ||
Latest revision as of 07:35, 8 July 2022
This article is out of date, please refer to zk-mvvm-book/8.0/syntax/data_binding/save for more up to date information.
Syntax
@save( [EL-expression], [conditionKeyword]=[EvaluateOnce EL-expression] )
Description
Target Attribute: any save-allowed attributes (except viewModel, validationMessages)
Purpose: Restrict binder to save data to ViewModel only, no loading.
You usually use this syntax when you want to save and load data in different conditions, you should write both @save and @load in an attribute. You have to use it in form binding to save upon a command.
- [conditionKeyword]=[EvaluateOnce EL-expression]
- This expression is optional unless you want to save or load upon a command.
- [conditionKeyword]
- It could be one of [ before | after ]
- [EvaluateOnce EL-expression]
- The evaluation result must be one or more command name.
- Command name must correspond to the name specified in Java annotation
@Commandin a ViewModel.
Example
Basic usage
<textbox value="@load(vm.person.name) @save(vm.person.name, before='save')"/>
<textbox value="@load(vm.person.name) @save(vm.person.name, before={'save', 'update'})"/>
Saving and loading form attribute'
<textbox value="@save(vm.number) @load(vm.number, after='cmd')" />
Version History
| Version | Date | Content |
|---|---|---|
| 6.0.0 | February 2012 | The MVVM was introduced. |