Yii2 中常用的增删改查操作总结

一、新增

1、使用save()

$model = new User();

$model->name = 'test';

$model->phone = '13000000000';

$model->email = '[email protected]';

$model->save();

2、使用createCommand 原生sql

$sql = "insert into user (name, phone, email) values ('test', '13000000000', '[email protected]')";

Yii::$app->db->createCommand($sql)->execute();

3、使用createCommand insert

Yii::$app->db->createCommand()->insert('user', [

    'name' => 'test',

    'phone' => '13000000000',

    'email' => '[email protected]'

])->execute();

4、批量插入

Yii::$app->db->createCommand()->batchInsert('user', ['name', 'phone', 'email'], [

    ['test1', '13000000000', '[email protected]'],

    ['test2', '13000000001', '[email protected]']

])->execute();

5、使用save()并校验参数正确性

        $data = [

            'name' => 'test',

            'phone' => '13000000000',

            'email' => '[email protected]'

        ];

        $model = new User();

        // 将数据填充到模型的属性中

        $model->load($data, '');

        // 等效于下面这样：

        // $model->attributes = $data;

        // 或者

        // $model->setAttributes($data);

        if ($model->validate()) {

            // 通过验证

            $model->save();

        } else {

            // 验证失败: $errors 是一个包含错误信息的数组

            $errors = $model->errors;

        }

二、删除

1、使用delete()

$user = User::find()->where(['name' => 'test'])->one();

$user->delete();

2、使用deleteAll()批量删除

User::deleteAll(['name' => 'test']);

3、使用createCommand delete()

Yii::$app->db->createCommand()->delete('user', ['name' => 'test'])->execute();

4、使用createCommand 原生sql

$sql = "delete from user where name = 'test'";

Yii::$app->db->createCommand($sql)->execute();

三、更新

1、使用update()

$user = User::find()->where(['name' => 'test'])->one();

$user->phone = '13100000000';

$user->update();  // 或者 $user->save();

2、使用updateAll()

User::updateAll(['phone' => '13100000000'], ['name' => 'test']);

3、使用createCommand update()

Yii::$app->db->createCommand()->update('user', ['phone' => '13100000000'], ['name' => 'test'])->execute();

4、使用createCommand 原生sql

$sql = "update user set phone = '13100000000' where name = 'test'";

Yii::$app->db->createCommand($sql)->execute();

四、查询

1、使用model

// 查询一条记录

User::find()->select(['name', 'phone', 'email'])->where(['phone' => '13000000000'])->andWhere(['like', 'name', 'test'])->one();

// 查询一条记录数组返回

User::find()->where(['name' => 'test'])->asArray()->one();

// 查询所有记录

User::find()->where(['name' => 'test'])->all();

// 查询所有记录数组返回

User::find()->where(['name' => 'test'])->asArray()->all();

2、使用createCommand

// 查询一条记录

Yii::$app->db->createCommand("select * from user where name = :name and phone = :phone")->bindValues([':name' => 'test', ':phone' => '13000000000'])->queryOne();

// 查询所有记录

Yii::$app->db->createCommand("select * from user where name = :name and phone = :phone")->bindValues([':name' => 'test', ':phone' => '13000000000'])->queryAll();

3、使用yii\db\Query()

(new \yii\db\Query())->from('user')->where(['name' => 'test'])->all();

4、子查询

$subQuery = (new \yii\db\Query())->select(['id'])->from('user')->where(['like', 'name', 'test'])->all();

(new \yii\db\Query())->from('user')->where(['in', 'id', $subQuery])->all();