Add to result array in controller

Hi

I have a number of posts which can be one of 3 states, pending,
approved, declined. I want to add some colour to my view when
displaying all the posts and i'm not sure how to do it. I have an
$improvement array and a getStatusColor function in the
app_controller. How can i read each item in the array, in my
controller and then add the status colour for the view?

Any help would be appreciated.

improvements_controller.php
<pre>
function index() {
$user_id = $this->Auth->user('id');
$conditions = array(
'conditions' => array('Improvement.user_id' => $user_id),
'fields' => array('Improvement.id', 'Improvement.user_id',
'Improvement.title', 'Improvement.description', 'Improvement.status',
'Improvement.created')
);
$this->set('user_improvements', $this->Improvement->find('all',
$conditions));
}
</pre>

app_controller.php
<pre>
function getStatusColour($improvement){
switch ($improvement) {
case 'Pending':
$improvement = 'yellow';
break;
case 'Approved':
$improvement = 'green';
break;
case 'Declined':
$improvement = 'red';
break;
}
return $improvement;
}
</pre>
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