ZK Developer's Reference/MVVM/Syntax/ViewModel/Parameters/@BindingParam

This article is out of date, please refer to zk-mvvm-book/8.0/syntax/viewmodel/parameters/bindingparam for more up to date information.

Syntax

@BindingParam("keyString")

Description

Target: Command method's parameter

Purpose: Tell binder to retrieve this parameter with specified key from binding argument on the ZUL.

The annotation is applied to command method's parameter. It declares the applied parameter should come from binding argument written on the ZUL with specified key.

Example

Command binding that pass parameters

		<listbox model="@load(vm.items)" selectedItem="@bind(vm.selected)" hflex="true" height="300px">
			<listhead>
				<listheader label="Name"/>
				<listheader label="Price" align="center" />
				<listheader label="Quantity" align="center"  />
			</listhead>
			<template name="model" var="item">
				<listitem onMouseOver="@command('popupMessage', myKey='myValue', content=item.description)">
					<listcell label="@bind(item.name)"/>
					<listcell label="@bind(item.price)"/>
					<listcell label="@bind(item.quantity)"/>
				</listitem>
			</template>
		</listbox>

Command method in ViewModel with binding parameter

	@Command
	public void popupMessage(@BindingParam("myKey")String target, @BindingParam("content")String content){
		//...
	}

• The target's value is "myValue", and content's is object item's description property.

Version History

Version	Date	Content
6.0.0	February 2012	The MVVM was introduced.