关于数据库mysql的使用： 1.查询： Salesorderitem::find()-asArray()-where([order_id=$order_id])-all()；Salesorderitem::find()-asArray()-where([order_id=$order_id])-one()；Quote::findOne([customer_id = $customer_id]); 2.插入： $order = new S

关于数据库mysql的使用：

1.查询：

Salesorderitem::find()->asArray()->where(['order_id'=>$order_id])->all()；

Salesorderitem::find()->asArray()->where(['order_id'=>$order_id])->one()；

Quote::findOne(['customer_id' => $customer_id]);

2.插入：

$order = new Salesorder();

$order->order_status = $order_status;

$order->store = $store;

$order->save();

$order_id = Yii::$app->db->getLastInsertID();

$db->createCommand('INSERT INTO customer (name) VALUES (:name)', [ ':name' => 'Qiang',])->execute();

3更新：

3.1

Yii::$app->db->createCommand()->update(self::QUOTE_ITEM, [

'qty' => $qty,

'row_weight'=>$row_weight,

'base_row_total'=>$base_row_total,

'row_total'=>$row_total,

],

'quote_id='.self::$_quote_id.' and item_id='.$item_id )

->execute();

3.2// to update an existing customer record

$customer = Customer::findOne($id);

$customer->email = 'james@example.com';

$customer->save();

// equivalent to $custmer->update();

4. 删除：

Quoteitem::deleteAll('quote_id='.self::$_quote_id.' and item_id='.$item_id);

注：使用mysql的时候一定要注意sql注入攻击的屏蔽

# 开始事务

$innerTransaction = Yii::$app->db->beginTransaction();

try {

# 保存quoteitems

self::removeQuoteItems($data['item_id']);

# 获取quoteitems ，保存到 self::$_quote_items

self::getQuoteItems();

# 保存 quote

self::saveQuote();

$innerTransaction->commit();

} catch (Exception $e) {

$innerTransaction->rollBack();

}