Difference between #2 and #1 of A simple go back button widget

A simple go back button widget
yii, Widgets, button, goback button
We all know that widgets are really useful. We can use the almost everywhere we
want, and we can use the same code a lot of times ( Almost OOP ).

In this case we are going to create a really useful and simple widget. A GoBack

Why a widget ? Simple, we can extend the variables and make it as complex as we
want, but will not be this case ;). We are going to pass just 1 variable if we
need it.

Under your ext folder or widget folder ( mine under **protected/ext/data** )
create the following widget:


class EBackButtonWidget extends CWidget {

    public $width = "150px";
    public function run() {

        echo CHtml::button('Back', array(
            'name' => 'btnBack',
            'class' => 'uibutton loading confirm',
            'style' => 'width:'.$this->width.';',
            'onclick' => "history.go(-1)",



Where: <br/> 

1. Back is the text that the button will show. <br/>
2. name will be the name of the button  <br/> 
3. class just in case that you want to do it pretty :).
4. styles that you want to use. In my case I will change the width.
5. onclick will execute our JS. In this case to go back 1 page.

To call this widget we simple:

    'width' => "100%",

Where :<br>
1. application.ext.data.EBackButtonWidget is the path to our widget.<br>
2. width will be the width param that we give to the

And that1. application.ext.data.EBackButtonWidget is
it !!
<br>the path to our widget.
2. width will be the width param that we give to the widget.

And that is it !!

Here's a very readable link in spanish to the original [tutorial][original].
[original]: http://www.cristiantala.cl/crear-un-widget-en-yii-boton-volver/