<?php

namespace common\models;

use Yii;

/**
 * This is the model class for table "chat".
 *
 * @property integer $chat_id
 * @property integer $status
 * @property string $comment
 * @property integer $from_user
 * @property integer $to_user
 *
 * @property User $fromUser
 * @property User $toUser
 * @property Message[] $messages
 */
class Chat extends \yii\db\ActiveRecord
{
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'chat';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['status', 'from_user', 'to_user'], 'integer'],
            [['comment'], 'string'],
            [['from_user'], 'exist', 'skipOnError' => true, 'targetClass' => User::className(), 'targetAttribute' => ['from_user' => 'id']],
            [['to_user'], 'exist', 'skipOnError' => true, 'targetClass' => User::className(), 'targetAttribute' => ['to_user' => 'id']],
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'chat_id' => 'Chat ID',
            'status' => 'Status',
            'comment' => 'Comment',
            'from_user' => 'From User',
            'to_user' => 'To User',
        ];
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getFromUser()
    {
        return $this->hasOne(User::className(), ['id' => 'from_user']);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getToUser()
    {
        return $this->hasOne(User::className(), ['id' => 'to_user']);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getMessages()
    {
        return $this->hasMany(Message::className(), ['chat_id' => 'chat_id'])->orderBy('message_id') ;
    }
}