Question

I am new in Yii framework and have a question.

I have a table named ‘node’ which has these fields:

• id
• name
• parent_id

parent_id contain id of parent of a node which exist in this table too.

I have created model,controller and view files using Gii interface. In view files id of parent is shown but I want to display parent name instead of its id .

I guess maybe I need to add a public property in model class of this table, so I would be access to it via ->parent_name in view files.

How can I do it ? what files should I change ?

Answer 1

You should have a relation to your parent node.

So in your Node::relations function, you should have something like:

'parent' => array(self::BELONGS_TO, 'Node', 'parent_id'),

To get this value from your child, you can do (assuming your child node variable is named $childNode):

echo $childNode->parent->name;

If you really want to be able to do…

$childNode->parent_name;

… for some reason, you can create a property in your Node model like this:

public function getParent_name()
{
    if ($this->parent == null)
        return '';

    return $this->parent->name;
}

Now you can call…

$childNode->parent_name;

OR

$childName->getParent_name();

to get the name of the parent node.