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Used to move a single node down the tree. You need to provide the ID of the element to be moved and a positive number of how many positions the node should be moved down. All child nodes for the specified node will also be moved.

Here is an example of a controller action (in a controller named Categories) that moves a specified node down the tree:

function movedown($title = null, $delta = null) {
        $cat = $this->Category->findByTitle($title);
        if (empty($cat)) {
            $this->Session->setFlash('There is no category named ' . $title);
            $this->redirect(array('action' => 'index'), null, true);
        }
        
        $this->Category->id = $cat['Category']['id'];
        
        if ($delta > 0) {  
            $this->Category->moveDown($this->Category->id, abs($delta));
        } else {
            $this->Session->setFlash('Please provide the number of positions the field should be moved down.'); 
        }
    
        $this->redirect(array('action' => 'show'), null, true);
    }

1. function movedown($title = null, $delta = null) {
2. $cat = $this->Category->findByTitle($title);
3. if (empty($cat)) {
4. $this->Session->setFlash('There is no category named ' . $title);
5. $this->redirect(array('action' => 'index'), null, true);
6. }
8. $this->Category->id = $cat['Category']['id'];
10. if ($delta > 0) {
11. $this->Category->moveDown($this->Category->id, abs($delta));
12. } else {
13. $this->Session->setFlash('Please provide the number of positions the field should be moved down.');
14. }
16. $this->redirect(array('action' => 'show'), null, true);
17. }

For example, if you'd like to move the "Cookies" category one step down, you would request: /categories/movedown/Cookies/1.

Used to move a single node up the tree. You need to provide the ID of the element to be moved and a positive number of how many positions the node should be moved up. All child nodes will also be moved.

Here's an example of a controller action (in a controller named Categories) that moves a node up the tree:

function moveup($title = null, $delta = null){
        $cat = $this->Category->findByTitle($title);
        if (empty($cat)) {
            $this->Session->setFlash('There is no category named ' . $title);
            $this->redirect(array('action' => 'index'), null, true);
        }
        
        $this->Category->id = $cat['Category']['id'];
        
        if ($delta > 0) {  
            $this->Category->moveup($this->Category->id, abs($delta));
        } else {
            $this->Session->setFlash('Please provide a number of positions the category should be moved up.'); 
        }
    
        $this->redirect(array('action' => 'index'), null, true);
    
    }

1. function moveup($title = null, $delta = null){
2. $cat = $this->Category->findByTitle($title);
3. if (empty($cat)) {
4. $this->Session->setFlash('There is no category named ' . $title);
5. $this->redirect(array('action' => 'index'), null, true);
6. }
8. $this->Category->id = $cat['Category']['id'];
10. if ($delta > 0) {
11. $this->Category->moveup($this->Category->id, abs($delta));
12. } else {
13. $this->Session->setFlash('Please provide a number of positions the category should be moved up.');
14. }
16. $this->redirect(array('action' => 'index'), null, true);
18. }

For example, if you would like to move the category "Desserts" up one level up you would request /categories/moveup/Desserts/1.

This method can be used to sort hierarchical data.