A widget is a reusable client-side code (containing JavaScript, CSS, and HTML) with minimal logic wrapped in a yii\base\Widget object that we can easily insert and apply in any view.
Building a widget requires you to extend two methods of yii\base\Widget:
The
init()method initializes the objectThe
run()method executes the object
In order to instance a widget, it is enough to call the static widget() method that accepts just one parameter or better still an array containing values for its public properties.
The following is an example:
MyWidget::widget(['prop1' => 'value of prop1', …])
This returns a string containing widget output, passing its value value of prop1 for its prop1 public properties.
If we need to insert an extra code in a widget's execution (for example, in the ActiveForm widget), we have a more complex way of instantiating the widget, using the begin() and end() methods.
The first method, begin(), accepts a function parameter with a configuration array to...