MISP/app/Model/TemplateElement.php

<?php

App::uses('AppModel', 'Model');

class TemplateElement extends AppModel {

	public $actsAs = array('Containable');

	public $hasMany = array(
		'TemplateElementAttribute' => array(
			'dependent' => true
		),
		'TemplateElementText' => array(
			'dependent' => true
		),
		'TemplateElementFile' => array(
			'dependent' => true
		)
	);

	public $belongsTo = array('Template');

	public function lastPosition($template_id) {
		$result = $this->find('first', array(
			'fields' => array('MAX(position) AS pos', 'id', 'template_id'),
			'conditions' => array('template_id' => $template_id),
			'order' => array('id'),
			'group' => array('id', 'template_id')
		));
		if (empty($result)) {
			return 0;
		}
		return $result[0]['pos'];
	}
}