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今天保存出错，但是什么也没提示，所以就查了下，怎么输出错误

$model->save();

$model->getErrors();

获取，刚插入数据的id

$reply->save();

$reply->attributes['id'];

"keyword != '' and keyword is not null and keyword != '*'"

YourModel::find()

    ->andWhere(['!=','keyword',''])

    ->andWhere(['is not','keyword',null])

    ->andWhere(['!=','keyword','*'])

    ->All();

name!=aa and order_id=1 and status=1

YourModel::find()->where(['and',['!=','name','aa'],['order_id'=>$order_id,'status'=>1]])

Yii生成URL

echo Url::toRoute(['page', 'id' => 'contact']);

echo Url::toRoute('post/index');

echo \Yii::$app->urlManager->createUrl(['site/page', 'id' => 'about']);

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