Using order by FIELD in CakePHP - mysql

Question

I'm trying to implement custom sort order into CakePHP 2 application, using the following code:
var $paginate = array(
'Project' => array(
'conditions' => array('Project.deleted' => 0),
'order' => array(
'Project.pinned' => 'desc',
'FIELD(Project.status, 1, 3, 4, 0, 2) DESC'
'Project.date_start' => 'asc',
'Project.name' => 'asc',
),
),
);
But, for some reason FIELD(Project.status, 1, 3, 4, 0, 2) DESC is ignored by Cake. Can you help me to make it work?

Answer 1

I made it work by making changes in /lib/Cake/Controller/Component/PaginatorComponent.php
I just found out how to do this and I know it is not perfect since it does not validate if the statement is correct but i think it's a good start for someone who got this issue.
In the function validateSort I added the last elseif for the case it is an ORDER BY FIELD. The problem is that the $order[$alias.'.'.$field] = $value can't work with FIELD since it works differently than most other ORDER BY clause.
foreach ($options['order'] as $key => $value) {
$field = $key;
$alias = $object->alias;
if (strpos($key, '.') !== false) {
list($alias, $field) = explode('.', $key);
}
if ($object->hasField($field)) {
$order[$alias . '.' . $field] = $value;
} elseif ($object->hasField($key, true)) {
$order[$field] = $value;
} elseif (isset($object->{$alias}) && $object->{$alias}->hasField($field, true)) {
$order[$alias . '.' . $field] = $value;
} elseif (strpos($alias, 'FIELD')==0){
$order[$key]=$value;
}
}

Answer 2

Remove array from order , It work in my case after removing array
var $paginate = array(
'Project' => array(
'conditions' => array('Project.deleted' => 0),
'order' =>
'Project.pinned' => 'desc',
'FIELD(Project.status, 1, 3, 4, 0, 2) DESC'
'Project.date_start' => 'asc',
'Project.name' => 'asc',
),
);