@ref"

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{{Deprecated | url=[http://books.zkoss.org/zk-mvvm-book/8.0/syntax/ref.html zk-mvvm-book/8.0/syntax/data_binding/ref]|}}
  
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{{ZK PE and EE}}
 
  Since 6.0.1
 
  Since 6.0.1
  
 
=Syntax=
 
=Syntax=
  
<tt> @ref(</tt> ''[EL-expression]'' <tt>) </tt>
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<code>@ref(</code> ''[EL-expression]'' <code>)</code>
  
 
= Description =
 
= Description =
'''Target Attribute:''' a custom attribute.
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'''Target Attribute:''' custom attribute.
  
'''Purpose:''' Make a reference which name is the custom attribute. It is useful for making a expression shorter and being referred by another expression.
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'''Purpose:''' Create a reference to an EL expression that can be used in another EL expression.
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Create this binding on a component's custom attribute whose name can be referred and used in another EL expression. The EL expression that refers to the reference must be the children of the component that contains the reference binding. This feature is useful in shortening EL expressions by referring it in another expression.
  
 
= Example =
 
= Example =
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<source lang="xml" >
 
<source lang="xml" >
  
<div p="@ref(vm.selectedPerson)"/>
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<div p="@ref(vm.selectedPerson)">
 
     <label value="@load(p.id)" />
 
     <label value="@load(p.id)" />
 
     <label value="@load(p.name)" />
 
     <label value="@load(p.name)" />
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</source>
 
</source>
  
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=Version History=
  
 
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=Version History=
 
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{| border='1px' | width="100%"
 
 
! Version !! Date !! Content
 
! Version !! Date !! Content
 
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Latest revision as of 07:35, 8 July 2022

Stop.png This article is out of date, please refer to zk-mvvm-book/8.0/syntax/data_binding/ref for more up to date information.


  • Available for ZK:
  • http://www.zkoss.org/product/zkhttp://www.zkoss.org/whyzk/zkeeVersion pe-ee.png
Since 6.0.1

Syntax

@ref( [EL-expression] )

Description

Target Attribute: custom attribute.

Purpose: Create a reference to an EL expression that can be used in another EL expression.

Create this binding on a component's custom attribute whose name can be referred and used in another EL expression. The EL expression that refers to the reference must be the children of the component that contains the reference binding. This feature is useful in shortening EL expressions by referring it in another expression.

Example

<div p="@ref(vm.selectedPerson)">
    <label value="@load(p.id)" />
    <label value="@load(p.name)" />
</div>

Version History

Version Date Content
6.0.1 May 2012 The new reference-binding feature.




Last Update : 2022/07/08

Copyright © Potix Corporation. This article is licensed under GNU Free Documentation License.