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We will start with the easiest??”we will look at how to implement a
published-state filter.
Rendering Output
[ 232 ]
We can use the grid.state type to easily render a published state drop-down
selection box. Unlike previous examples, we'll use the type in the JView class's
display() method. This example demonstrates how we can implement this:
// prepare list array
$lists = array();
// get the user-state of the published filter
$filter_state = $mainframe->getUserStateFromRequest(
>$option.'filter_state',
'filter_state');
// set the table filter values
$lists['state'] = JHTML::_('grid.state', $filter_state);
// add the lists array to the object
$this->assignRef('lists', $lists);
We use the application getUserStateFromRequest() method to determine the
current published state filter value, using the path $option plus filter_state. The
default value is a null string, which indicates that no selection has been made.
Once we have the published state filter value, we use the grid.state type to render
a drop-down list form control with the available published state properties.


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