yiiapi/demos/blog/protected/models/Post.php

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<?php
/**
 * The followings are the available columns in table 'tbl_post':
 * @property integer $id
 * @property string $title
 * @property string $content
 * @property string $tags
 * @property integer $status
 * @property integer $create_time
 * @property integer $update_time
 * @property integer $author_id
 */
class Post extends CActiveRecord
{
	const STATUS_DRAFT=1;
	const STATUS_PUBLISHED=2;
	const STATUS_ARCHIVED=3;

	private $_oldTags;

	/**
	 * Returns the static model of the specified AR class.
	 * @return static the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}

	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return '{{post}}';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array(
			array('title, content, status', 'required'),
			array('status', 'in', 'range'=>array(1,2,3)),
			array('title', 'length', 'max'=>128),
			array('tags', 'match', 'pattern'=>'/^[\w\s,]+$/', 'message'=>'Tags can only contain word characters.'),
			array('tags', 'normalizeTags'),

			array('title, status', 'safe', 'on'=>'search'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations()
	{