In Yii, code pieces commonly used in views are placed into widgets. For example, a widget can render a tag cloud or provide a custom form input type. Core widgets are highly configurable and are used in views as follows:
<?$this->widget('CLinkPager', array( 'pages' => $pages, 'pageSize' => 15, ))?>
In the preceding code, we are using $this->widget
that calls a CLinkPager
widget with an array of parameters to display a pagination. pages
and pageSize
are both assigned to the corresponding public properties of the CLinkPager
widget before it is rendered.
Note that we have changed the count of items per page to 15
in our example. If we want our pagination to display 15 items per page on all pages of our application, then we will need to provide a pageSize
parameter with a value of 15
for all CLinkPager
widget calls. Is there a better way? Definitely, yes.
A Yii web application provides a bunch of components. One of them is a widget factory that since Yii 1.1.3 can be used to set widget defaults.
pageSize
application-wide. We will need to edit the main.php
application configuration file as follows:return array( … 'components'=>array( 'widgetFactory'=>array( 'widgets'=>array( 'CLinkPager'=>array( 'pageSize'=>15, ), … ), ), … ), );
pageSize
of CLinkPager
will be 15
, so if we omit this parameter for all the CLinkPager
classes of the application then it will be 15
, application-wide.pageSize
value for a specific widget:<?$this->widget('CLinkPager', array( 'pages' => $pages, 'pageSize' => 5, ))?>
This works much like the CSS cascade. You set the default overall style in an external file, but can still override this through inline styles for individual widgets.
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