Yii2: Need support to set params of the constructor of `\yii\base\Widget`

[vuongxuongminh]

What steps will reproduce the problem?

Create a custom widget with constructor:

class MyWidget extends \yii\base\Widget {

public function __construct($a, $b, array $config = []) {

}

}

And use in view:

MyWidget::begin(); // DI will throw
MyWidget::widget(); // DI will throw

What is the expected result?

Should support set construct params:

MyWidget::widget([], [1, 2]);

Additional info

| Q | A
| ---------------- | ---
| Yii version | 2.0.15
| PHP version | 7.1
| Operating system | Windows

[rob006]

Why do you want to make $a and $b a constructor parameters instead configuring them by $config array?

[vuongxuongminh]

For some special case like:

class MyWidget extends \yii\base\Widget {

public $a = 0;

private $_b;

public function setB($b) {
 // this need property a to do something
$this->_b = $this->a  + $b;
}

}

Now we must take care a position of properties in an array config:

// b will be 123
MyWidget::widget([
        'b' => 123,
        'a' => 1
]);

// b will be 124
MyWidget::widget([
         'a' => 1
         'b' => 123,
]);

[rob006]

You should be able to do this in init()?

[vuongxuongminh]

How if it more complex like:

class MyWidget extends \yii\base\Widget {

private $_a;

public function getA() {
return $this->_a;
}

public function setA($value){
  $view = $this->getView();
}

}

setter A need view and view will be an object Yii::$app->view but i need use my custom view

MyWidget::widget([
     'a' => 123, // `view` instance in `setA` will be `Yii::$app->view`
     'view' => $myView
]);

MyWidget::widget([
     'view' => $myView,
     'a' => 123, // `view` instance in `setA` will be `myView`
]);

[rob006]

Your setA() method does not make any sense. Can you give some real use case?

[vuquangthinh]

create new method with setXXX
and init widget as WidgetClass::widget(['XXX' => '']);
clear and simple