Hi, I'm creating a custom find method in my AppModel: _findRandom. And I
want it to be accessible to all models, as I understand, for this to be
achieved I need "random" (as a string) to be present in a $_findMethods
array. It is set in Model class, and I thought that I can append to it in
beforeFind function in AppModel, however that did not work. Then I thought
that perhaps I should try doing it in a constructor, but that resulted in a
blank pages (no debug messages with debug level 2). So as a temporary
solution I completely redefine $_findMethods in my AppModel, bellow is how
my code looks now, but I was wondering if there's a better way to append to
that array.
---
<?php
class AppModel extends Model {
var $actsAs = array('Containable');
var $_findMethods = array(
'all' => true,
'first' => true,
'count' => true,
'neighbors' => true,
'list' => true,
'threaded' => true,
'random' => true
);
function _findRandom($state, $query, $results = array()) {
if($state == 'before') {
if(!isset($query['limit'])) {
$query['limit'] = 1;
}
# First find all ids with current conditions
$findOptions = $query;
unset($findOptions['limit']);
$findOptions['fields'] = a('id');
$list = $this->find('list', $findOptions);
# Select random id(s)
$list = array_keys($list);
$resArray = array();
for($i = 0; $i < $query['limit']; $i++) {
$id = mt_rand(0, count($list)-1);
array_push($resArray, $list[$id]);
}
$list = $resArray;
# Add to conditions
$primaryKey = $this->alias . '.' . $this->primaryKey;
$query['conditions'][$primaryKey] = $list;
return $query;
} else {
if(empty($results[0])) {
return false;
}
return $results;
}
}
}
?>
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