gistfile1.txt

<?php

class Service {
	function addArticle($data) {
		$this->Transaction->begin();
		if (!$this->Article->save($this->Article->create($data))) {
			$this->Transaction->begin();
			return false;
		}
		$this->Transaction->commit();
		return true;
	}
}

gistfile2.txt

<?php

class Service {
	function addArticle($data) {
		if (!$this->Article->save($this->Article->create($data))) {
			return false;
		}
		return true;
	}

	function addArticleByMember($data) {
		$this->Transaction->begin();
		if (!$this->addArticle($data)) {
			$this->Transaction->begin();
			return false;
		}
		$this->Transaction->commit();
		return true;
	}

	function addArticleByAdmin($data) {
		$this->Transaction->begin();

		$data['is_admin'] = true;
		if (!$this->addArticle($data)) {
			$this->Transaction->begin();
			return false;
		}
		$this->Transaction->commit();
		return true;
	}


}