adding class and links to Ctreeview node

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This article will show you how to add links and class to each node in ctreeview. so you can attach events in js by obtaining handler on anchor or class.

I am new to Yii, but I love this framewrok. lately I have been playing a bit with ctreeview. and I find out there is a lack of documentation about adding links to ctree node, so here, I would like to share my experience with you, because I think this is a quite common practice if you are using ctreeview. this article is based on this article

So I assume that you have something like this in your controller:

public function actionAjaxFillTree()
    {
        if (!Yii::app()->request->isAjaxRequest) {
            exit();
        }
        $parentId = "NULL";
        if (isset($_GET['root']) && $_GET['root'] !== 'source') {
            $parentId = (int) $_GET['root'];
        }
        $req = Yii::app()->db->createCommand(
            "SELECT m1.id, m1.name AS text, m2.id IS NOT NULL AS hasChildren "
            . "FROM tree AS m1 LEFT JOIN tree AS m2 ON m1.id=m2.parent_id "
            . "WHERE m1.parent_id <=> $parentId "
            . "GROUP BY m1.id ORDER BY m1.name ASC"
        );
        $children = $req->queryAll();
        echo str_replace(
            '"hasChildren":"0"',
            '"hasChildren":false',
            CTreeView::saveDataAsJson($children)
        );
        exit();
    } 

after the query($children = $req->queryAll()) in above code, add the following loop to insert a link to each node, you can also add a class or id along with it.

$treedata=array();
foreach($children as $child){
     $options=array('href'=>'#','id'=>$child['id'],'class'=>'treenode');
     $nodeText = CHtml::openTag('a', $options);
	  $nodeText.= $child['text'];
	  $nodeText.= CHtml::closeTag('a')."\n";
	  $child['text'] = $nodeText;
	  $treedata[]=$child;
}

And replace

CTreeView::saveDataAsJson($children)

with

CTreeView::saveDataAsJson($treedata)

So try it out now.

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Category: Tips
Written by: bingjie2680
Last updated by: bingjie2680
Created on: Jul 8, 2011
Last updated: 6 years ago
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