Primefaces SelectOneRadio

Primefaces SelectOneRadio is a component that provides the functionality of a radio button within a group of options where only one can be selected. The component is part of the Primefaces library, which is a popular UI component library for building rich and user-friendly web applications.

Features

• Provides radio button functionality
• Can be styled using CSS
• Allows for customization of layout and labels
• Supports AJAX and partial rendering
• Can be used with data from various sources, such as a bean or a database
• Can be used with converters to convert values

Getting Started

To use Primefaces SelectOneRadio in your project, you need to add the Primefaces library to your project's dependencies. Once you have added the library, you can use the following code to create a basic SelectOneRadio component:

<p:selectOneRadio id="radioButton" value="#{bean.selectedValue}">
    <f:selectItem itemLabel="Option 1" itemValue="option1" />
    <f:selectItem itemLabel="Option 2" itemValue="option2" />
    <f:selectItem itemLabel="Option 3" itemValue="option3" />
</p:selectOneRadio>

In this example, the id attribute is used to identify the component in the page, and the value attribute is used to bind the selected value to a bean property. The f:selectItem tag is used to define each option with a label and a value.

Customization

Primefaces SelectOneRadio provides various customization options that allow you to change the appearance and behavior of the component. Here are a few examples:

Custom Layout

<p:selectOneRadio id="radioButton" value="#{bean.selectedValue}">
    <f:selectItem itemLabel="Option 1" itemValue="option1" />
    <f:selectItem itemLabel="Option 2" itemValue="option2" />
    <f:selectItem itemLabel="Option 3" itemValue="option3" />

    <p:layout layout="grid" columns="3" />
</p:selectOneRadio>

In this example, the p:layout tag is used to define a grid layout with 3 columns. The p:selectOneRadio component will be rendered with a grid layout, which will display each option in a separate cell.

Custom Label

<p:selectOneRadio id="radioButton" value="#{bean.selectedValue}">
    <f:selectItem itemLabel="Option 1" itemValue="option1" />
    <f:selectItem itemLabel="Option 2" itemValue="option2" />
    <f:selectItem itemLabel="Option 3" itemValue="option3" />

    <p:radioButton label="Select an option:" />
</p:selectOneRadio>

In this example, the p:radioButton tag is used to add a label to the component. The label will be rendered above the radio buttons and will help users understand what they are selecting.

Custom Styling

<p:selectOneRadio id="radioButton" value="#{bean.selectedValue}" styleClass="customRadio">
    <f:selectItem itemLabel="Option 1" itemValue="option1" />
    <f:selectItem itemLabel="Option 2" itemValue="option2" />
    <f:selectItem itemLabel="Option 3" itemValue="option3" />
</p:selectOneRadio>

In this example, the styleClass attribute is used to add a custom CSS class to the component. This allows you to apply custom styling to the component using CSS.

Conclusion

Primefaces SelectOneRadio is a powerful component that allows developers to add radio button functionality to their web applications. With its rich customization options, the component can be tailored to fit the needs of any project.