3,1 DataObjectManager style field that allows arbitrary options to be rendered on the frontend with maximum flexibility and ease.

TableOptionsetField.php

<?php

/**
 * TableOptionsetField
 * DataObjectManager style field that allows arbitrary options to be rendered on
 * the frontend with maximum flexibility and ease.
 * @author Will Morgan <[email protected]>
 */
class TableOptionsetField extends FormField {

    /**
	 * @var SS_List $source The iterable data source
	 */
	protected $source;

	/**
	 * @var array A hash of field => title column names, to be used in rendering
	 */
	protected $sourceColumns;

	/**
	 * @var callable A function that is run to get the value of a source item
	 */
	protected $sourceValueGetter;

	/**
	 * @var string The HTML attribute name to determine input selection
	 */
	protected static $selected_attr = 'checked';


	public function __construct($name, $title = null, $source, $sourceColumns = null, $sourceValueGetter = null, $value = null, $form = null) {
		parent::__construct($name, $title, $value);
		$this
		->setSource($source)
		->setSourceColumns($sourceColumns)
		->setSourceValueGetter($sourceValueGetter)
		->setForm($form);
	}

	/**
	 * @return SS_List
	 */
	public function getSource() {
		return $this->source;
	}

	public function setSource(SS_List $source) {
		$this->source = $source;
		return $this;
	}

	public function getSourceColumns() {
		return $this->sourceColumns;
	}

	public function setSourceColumns(array $columns) {
		$this->sourceColumns = $columns;
		return $this;
	}

	/**
	 * @param callable $callable The function to call on the source object.
	 */
	public function setSourceValueGetter($callable) {
		if(!is_null($callable) && !is_callable($callable)) {
			throw new InvalidArgumentException('Must be a callable: ' . var_export($callable, true));
		}
		$this->sourceValueGetter = $callable;
		return $this;
	}

	/**
	 * Gets the HTML attributes for the input field.
	 * @return string
	 */
	public function getFieldAttrs($source) {
		$sourceValue = $this->getSourceValue($source);
		$attrs = array(
			'id' => sprintf('%s_%s', $this->ID(), $sourceValue),
			'name' => $this->getName(),
			'value' => $sourceValue,
			static::$selected_attr => $this->isSourceSelected($source),
		);
		return $this->getAttributesHTML($attrs);
	}

	/**
	 * @return boolean Whether this source is selected in the field
	 */
	public function isSourceSelected($source) {
		return $this->dataValue() == $this->getSourceValue($source);
	}

	/**
	 * @return string The "value" to use for this source item.
	 */
	public function getSourceValue($source) {
		// 99% of the time...
		if(!$this->sourceValueGetter && $source instanceof DataObject) {
			return $source->ID;
		}
		return $this->sourceValueGetter($source);
	}

	/**
	 * Prepares data for the view to render in to a table.
	 * @return string
	 */
	public function Field($properties = array()) {
		$options = array();
		$columns = $this->getSourceColumns();

		// 99% of the time it'll be a DataList, so use convention!
		if($this->getSource() instanceof DataList && empty($columns)) {
			$colClass = $this->getSource()->dataClass();
			$columns = $colClass::config()->get('summary_fields');
		}
		foreach($this->getSource() as $id => $sourceObject) {
			$fields = array();
			foreach($columns as $colName => $colTitle) {
				if($sourceObject->hasMethod($colName)) {
					$value = $sourceObject->$colName();
				}
				else {
					$value = $sourceObject->getField($colName);
				}
				$fields[] = array('Value' => $value);
			}
			$options[] = array(
				'Object' => $sourceObject,
				'FieldAttrs' => $this->getFieldAttrs($sourceObject),
				'Fields' => new ArrayList($fields),
			);
		}
		$viewColumns = array();
		// Convert these in to template-friendly variables
		foreach($columns as $field => $title) {
			$viewColumns[] = array(
				'Field' => $field,
				'Title' => $title,
			);
		}
		$tplOptions = array_merge($properties, array(
			'Columns' => new ArrayList($viewColumns),
			'Options' => new ArrayList($options),
		));
		return $this->customise($tplOptions)->renderWith(
			$this->getTemplates()
		);
	
	}

}

TableOptionsetField.ss

<table>
<tr>
    <td></td>
<% loop $Columns %>
	<th>$Title</th>
<% end_loop %>
</tr>
<% loop $Options %>
<tr>
	<td><input type="radio" $FieldAttrs></td>
	<% loop $Fields %>
	<td>$Value</td>
	<% end_loop %>
</tr>
<% end_loop %>
</table>