Create (Insert) Record

To insert the records in the database, following steps are there. We have named our Yii2 folder as create.

Step 1 Create Model file

Create a model file child.php in frontend/models folder.

<?php 
namespace app\models; 
 
use Yii; 
 
class Child extends \yii\db\ActiveRecord 
{ 
    /** 
     * @inheritdoc 
     */ 
    public static function tableName() 
    { 
        return 'child'; 
    } 
     
    /** 
     * @inheritdoc 
     */ 
    public function rules() 
    { 
        return [ 
            [['name', 'meaning', 'gender'], 'required'], 
            [['name', 'meaning'], 'string', 'max' => 100], 
            [['gender'], 'string', 'max' => 15] 
        ]; 
    } 
}

Look at the above code,

\yii\db\ActiveRecord is used to create a model file.
In function tableName put the table name you are using.
Function rules define the inputs of your table.

Step 2 Create Controllers file

Create a controller file ChildController.php in frontend/controllers folder.

<?php 
namespace frontend\controllers; 
 
use Yii; 
use app\models\Child; 
use yii\web\Controller; 

/** 
 * manual CRUD 
 **/ 
class ChildController extends Controller 
{  
    /** 
     * Create 
     */ 
    public function actionCreate() 
    { 
        
        $model = new Child(); 
 
        // new record 
        if($model->load(Yii::$app->request->post()) && $model->save()){ 
            return $this->redirect(['index']); 
        } 
                 
        return $this->render('create', ['model' => $model]); 
    }
    }

Step 3 Create View file

Create a view folder child in frontend/views folder. Then create a file create.php in frontend/views/child folder.

<?= $this->render('child_view', [ 
    'model' => $model, 
]) ?>

Now create a file child_view.php in frontend/views/child folder.

<?php 
use yii\helpers\Html; 
use yii\widgets\ActiveForm; 
?> 
 
<?php $form = ActiveForm::begin(); ?> 
 
    <?= $form->field($model, 'name'); ?> 
    <?= $form->field($model, 'meaning'); ?> 
    <?= $form->field($model, 'gender'); ?> 
    
    <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model-> 
     isNewRecord ? 'btn btn-success' : 'btn btn-primary']); ?> 
 
   <?php ActiveForm::end(); ?>

Step 4 Run it

Now run your application on your browser with the following URL.

http://localhost/create/frontend/web/index.php?r=child/create