netui-data:expressionColumn Tag

<netui-data:expressionColumn> Tag

A column that can use data binding expressions to determine the value of a data cell.

Syntax

<netui-data:expressionColumn
    [styleClassPrefix="string_styleClassPrefix"]
    title="string_title"
    value="string_or_expression_value" />

Description

A column that can use data binding expressions to determine the value of a data cell. The expression column enables combining data from different fields of the current data item or even from different expression contexts into a value for the cell. The <netui-data:expressionColumn> tag cannot make a method call to determine the value of a data cell. An expression column is not sortable or filterable.

Attributes

styleClassPrefix

The style class prefix used to make the style class name in the header, data, and footer cells. The styleClassPrefix will be concatinated with a suffix to create style class names that are rendered inside of the <td> tags for each cell in this column.

Assuming the value of this attribute is foo, the style class names rendered for each part of the column are shown in the table below.

Column Region Style class

Header foo-td-header

Data foo-td-data

Footer foo-td-footer

Required	Supports runtime expression evaluation	Data bindable
No	No	No

title The text to render in the column header.

Required	Supports runtime expression evaluation	Data bindable
Yes	No	No

value The value may contain an expression(s) that will be evaluated before the data for each item in the <netui-data:grid>'s data set is rendered. The databinding expression {container.item} may be used to access the current data item that is being rendered.

Required	Supports runtime expression evaluation	Data bindable
Yes	No	Yes

Sample

Given a data item that has a lastName field and a firstName field, the following would render these together in a single cell:

    <netui-data:expessionColumn value="{container.item.lastName},
         {container.item.firstName}"
         title="Last Name, First Name"
         />

Sample Code