Grid Renderer"
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| − | When a grid (<javadoc>org.zkoss.zul.Grid</javadoc>) is assigned with a model, a default renderer is assigned too<ref>For the concept about component, model and renderer, please refer to [[ZK_Developer's_Reference/MVC/Model/List_Model#Model-driven_Display|the Model-driven Display section]].</ref>. The default renderer will assume that each row has only one column, and it converts the data into a string directly<ref>If the grid is assigned a template called <code>model</code>, then the template will be used to render the grid. For more information, please refer to [[ZK Developer's Reference/MVC/View/Template/Grid Template|the Grid Template section]].</ref>. If you want to display multiple columns or retrieve a particular field of the data, you have to implement <javadoc type="interface">org.zkoss.zul.RowRenderer</javadoc> to handle the rendering. | + | When a grid (<javadoc>org.zkoss.zul.Grid</javadoc>) is assigned with a model, a default renderer is assigned too<ref>For the concept about component, model and renderer, please refer to [[ZK_Developer's_Reference/MVC/Model/List_Model#Model-driven_Display|the Model-driven Display section]].</ref>. The default renderer will assume that each row has only one column, and it converts the data into a string directly<ref>If the grid is assigned a template called <code>model</code>, then the template will be used to render the grid. For more information, please refer to [[ZK Developer's Reference/MVC/View/Template/Grid Template|the Grid Template section]].</ref>. If you want to display multiple columns or retrieve a particular field of the data, you have to implement <javadoc type="interface">org.zkoss.zul.RowRenderer</javadoc> to handle the rendering and assign it by [https://www.zkoss.org/javadoc/latest/zk/org/zkoss/zul/Grid.html#setRowRenderer-org.zkoss.zul.RowRenderer- setRowRenderer()]. |
For example, | For example, | ||
Revision as of 13:58, 30 May 2022
When a grid (Grid) is assigned with a model, a default renderer is assigned too[1]. The default renderer will assume that each row has only one column, and it converts the data into a string directly[2]. If you want to display multiple columns or retrieve a particular field of the data, you have to implement RowRenderer to handle the rendering and assign it by setRowRenderer().
For example,
public class FoodGroupRenderer implements RowRenderer, java.io.Serializable {
public void render(Row row, Object obj, int index) {
if (row instanceof Group) {
row.appendChild(new Label(obj.toString()));
} else {
User user = (User) obj;
row.appendChild(new Label(user.getName()));
row.appendChild(new Label(user.getDescription()));
row.appendChild(new Label(user.getDomain()));
}
}
}
- ↑ For the concept about component, model and renderer, please refer to the Model-driven Display section.
- ↑ If the grid is assigned a template called
model, then the template will be used to render the grid. For more information, please refer to the Grid Template section.
Version History
| Version | Date | Content |
|---|---|---|
| 6.0.0 | February 2012 | The index argument was introduced. |