YII2 model 字段验证提示 Unknown scenario: update

意思是 update 场景不存在，也就是 定义的 rules 中没有该规则：

    /**
     * @inheritdoc
     * 验证规则
     */
    public function rules()
    {
        return [
            [['name', 'password'], 'required', 'on' => ['create'], 'message' => '{attribute}不能为空'],
            [['password'], 'string', 'max' => 16, 'min' => 6],
            [['name'], 'string', 'max' => 32, 'on' => ['create'], 'message' => '用户名最大32个字符'],
            [['screenName'], 'string', 'max' => 32, 'message' => '昵称最大32个字符'],
            [['name'], 'checkName', 'on' => ['create']],
            [['screenName'], 'checkName', 'skipOnEmpty' => false],
            [['name'], 'unique', 'on' => ['create']],
            [['screenName'], 'unique', 'on' => ['create']],
        ];
    }

现在只需要在相应的字段里边添加一个场景，用来标志相关场景的验证规则

    /**
     * @inheritdoc
     * 验证规则
     */
    public function rules()
    {
        return [
            [['name', 'password'], 'required', 'on' => ['create'], 'message' => '{attribute}不能为空'],
            [['password'], 'string', 'max' => 16, 'min' => 6],
            [['name'], 'string', 'max' => 32, 'on' => ['create'], 'message' => '用户名最大32个字符'],
            [['screenName'], 'string', 'max' => 32, 'message' => '昵称最大32个字符'],
            [['name'], 'checkName', 'on' => ['create']],
            [['screenName'], 'checkName', 'skipOnEmpty' => false],
            [['name'], 'unique', 'on' => ['create']],
            [['screenName'], 'unique', 'on' => ['create', 'update']],
        ];
    }