yii2 change database for admin and site panel - yii2

Question

I have the following config file
common/main-local.php
return [
'components' => [
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=aishwariya_basic2',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
],
// 'db' => $db,
'db2' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=aishwariya_basic',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
],
'mailer' => [
'class' => 'yii\swiftmailer\Mailer',
'viewPath' => '#common/mail',
],
// autoloading model and component classes
'import'=> [
'class' => 'yii2-widget-linkpager',
'application.extensions.MyLinkPager.*',
],
],
];
Admincontroller
namespace frontend\controllers;
use Yii;
use frontend\models\Site_login;
use frontend\models\EntryForm_model;
use frontend\models\Asal_page_model;
use frontend\models\Interest_page_model;
use frontend\models\Return_page_model;
use frontend\models\Daily_report_model;
use frontend\models\Changepassword;
use yii\base\InvalidParamException;
use yii\web\BadRequestHttpException;
use yii\web\Controller;
use yii\filters\VerbFilter;
use yii\filters\AccessControl;
use yii\helpers\ArrayHelper;
use yii\db\Query;
class AdminController extends Controller
{
/**
* #inheritdoc
*/
public function behaviors()
{
return [
'access' => [
'class' => AccessControl::className(),
'only' => ['index', 'signup'],
'rules' => [
[
'actions' => ['index'],
'allow' => true,
'roles' => ['?'],
],
[
'actions' => ['settings','changepassword'],
'allow' => true,
'roles' => ['#'],
],
],
],
'verbs' => [
'class' => VerbFilter::className(),
'actions' => [
'logout' => ['post'],
],
],
];
}
/**
* #inheritdoc
*/
public function actions()
{
return [
'error' => [
'class' => 'yii\web\ErrorAction',
],
'captcha' => [
'class' => 'yii\captcha\CaptchaAction',
'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
],
];
}
#####Action index code starts here
public function actionIndex()
{
$this->layout = 'admin';
$my2DbConn = Yii::$app->db;
$model = new Site_login();
if ($model->load(Yii::$app->request->post()) )
{
if ($model->validate()) {
$url = Yii::$app->getUrlManager()->getBaseUrl()."/admin/search";
return $this->redirect($url);
}
}
return $this->render('index', ['model' => $model]);
}
Site controller
public function actionInitial()
{
$this->layout = 'site';
$my2DbConn = Yii::$app->db2;
$model=new Initial_model();
if ($model->load(Yii::$app->request->post()))
{
}
return $this->render('initial',['model'=>$model]);
}
I would like to change the database belongs to controller. Please give me some help. I have used two db but it tooks first db file.

Answer 1

You can configure more then a db in config
return [
'components' => [
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=testdb',
'username' => 'demo',
'password' => 'demo',
],
'db2' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=testdb2',
'username' => 'demo2',
'password' => 'demo2',
],
],
];
and obtain your db (this is if you want use direct command in controller and not for activeRecord)
class yourController extends \yii\web\Controller
{
public function actionYourAction()
{
...
$my2DbConn = Yii::$app->db2;
....
}
Or you can manage programmatically with the proper setting
If for your model (like you have in your code ) you want to use a different database connection other than the db component, you should override the getDb() method in your related ActiveRecord MODEL (see the doc .. link at the bottom):
class YourModel extends ActiveRecord // eg: Initial_model
{
// ...
public static function getDb()
{
// use the "db2" application component
return \Yii::$app->db2;
}
}
and not assign $my2DbConn = Yii::$app->db; in controller this is for createCommand (direct sql commend) and not for activeRecord like you need ..
see this guide http://www.yiiframework.com/doc-2.0/guide-db-active-record.html or this reference for related param http://www.yiiframework.com/doc-2.0/yii-db-connection.html