Unknown Method – yii\base\UnknownMethodException Calling unknown method: yii\web\Request::post() - php

Question

I am new to yii2 and I have created a form, however it is showing the following error while loading the page:
Unknown Method – yii\base\UnknownMethodException
Calling unknown method: yii\web\Request::post()
The code in studController
public function actionStudform()
{
$data = Stud::find()->asArray()->all();
$model = new Stud;
if(($model->load(Yii::$app->request->post())) && $model->validate())
{
echo "validate";
}
else
{
return $this->render('studform',['model'=>$model,'data'=>$data]);
}
}

Answer 1

ok
i also faced that problem and i had sorted out also
in yii2 you have to check that if form is posted or not ?
if form posted then you have to fetch data or print data
try my code it working in my case with same error
public function actionStudform()
{
$data = Stud::find()->asArray()->all();
$model = new Stud;
$request = Yii::$app->request;
if($request->isPost)
{
if(($model->load($request->post)) && $model->validate())
{
print_r($request->post['Stud']);
}
return $this->render('studform',['model'=>$model,'data'=>$data]);
}
else
{
return $this->render('studform',['model'=>$model,'data'=>$data]);
}
}

Answer 2

Check namespace use Yii in your controller
OR
I think this is again the composer dependency resolver doing unexpected things:
you require yiisoft/yii2 in your composer.json but do not have the composer asset plugin installed.
then the dependency resolver does not find packages with vendor bower-asset so it looks for other versions of yiisoft/yii2 that do not have conflict
The result is to install the beta version of yii2 to be installed
The correct solution as already mentioned is to install the composer-asset-plugin:
php composer.phar global require "fxp/composer-asset-plugin:1.0.*#dev"