PHP code example of yiiext / nested-set-behavior

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

yiiext / nested-set-behavior example snippets

public function behaviors()
{
    return array(
        'nestedSetBehavior'=>array(
            'class'=>'ext.yiiext.behaviors.model.trees.NestedSetBehavior',
            'leftAttribute'=>'lft',
            'rightAttribute'=>'rgt',
            'levelAttribute'=>'level',
        ),
    );
}

$roots=Category::model()->roots()->findAll();

$category=Category::model()->findByPk(1);
$descendants=$category->descendants()->findAll();

$category=Category::model()->findByPk(1);
$descendants=$category->children()->findAll();

$category=Category::model()->findByPk(5);
$ancestors=$category->ancestors()->findAll();

$category=Category::model()->findByPk(9);
$parent=$category->parent()->find();

$category=Category::model()->findByPk(9);
$nextSibling=$category->next()->find();

Category::model()->findAll(array('order'=>'lft'));

Category::model()->findAll(array('condition'=>'root=?','order'=>'lft'),array($root_id));

$root=new Category;
$root->title='Mobile Phones';
$root->saveNode();
$root=new Category;
$root->title='Cars';
$root->saveNode();

$category1=new Category;
$category1->title='Ford';
$category2=new Category;
$category2->title='Mercedes';
$category3=new Category;
$category3->title='Audi';
$root=Category::model()->findByPk(1);
$category1->appendTo($root);
$category2->insertAfter($category1);
$category3->insertBefore($category1);

$category1=new Category;
$category1->title='Samsung';
$category2=new Category;
$category2->title='Motorola';
$category3=new Category;
$category3->title='iPhone';
$root=Category::model()->findByPk(2);
$category1->appendTo($root);
$category2->insertAfter($category1);
$category3->prependTo($root);

$category1=new Category;
$category1->title='X100';
$category2=new Category;
$category2->title='C200';
$node=Category::model()->findByPk(3);
$category1->appendTo($node);
$category2->prependTo($node);

// move phones to the proper place
$x100=Category::model()->findByPk(10);
$c200=Category::model()->findByPk(9);
$samsung=Category::model()->findByPk(7);
$x100->moveAsFirst($samsung);
$c200->moveBefore($x100);
// now move all Samsung phones branch
$mobile_phones=Category::model()->findByPk(1);
$samsung->moveAsFirst($mobile_phones);
// move the rest of phone models
$iphone=Category::model()->findByPk(6);
$iphone->moveAsFirst($mobile_phones);
$motorola=Category::model()->findByPk(8);
$motorola->moveAfter($samsung);
// move car models to appropriate place
$cars=Category::model()->findByPk(2);
$audi=Category::model()->findByPk(3);
$ford=Category::model()->findByPk(4);
$mercedes=Category::model()->findByPk(5);

foreach(array($audi,$ford,$mercedes) as $category)
    $category->moveAsLast($cars);

$node=Category::model()->findByPk(10);
$node->moveAsRoot();

$root=Category::model()->findByPk(1);
CVarDumper::dump($root->isRoot()); //true;
CVarDumper::dump($root->isLeaf()); //false;
$node=Category::model()->findByPk(9);
CVarDumper::dump($node->isDescendantOf($root)); //true;
CVarDumper::dump($node->isRoot()); //false;
CVarDumper::dump($node->isLeaf()); //true;
$samsung=Category::model()->findByPk(7);
CVarDumper::dump($node->isDescendantOf($samsung)); //true;

$criteria=new CDbCriteria;
$criteria->order='t.lft'; // or 't.root, t.lft' for multiple trees
$categories=Category::model()->findAll($criteria);
$level=0;

foreach($categories as $n=>$category)
{
	if($category->level==$level)
		echo CHtml::closeTag('li')."\n";
	else if($category->level>$level)
		echo CHtml::openTag('ul')."\n";
	else
	{
		echo CHtml::closeTag('li')."\n";

		for($i=$level-$category->level;$i;$i--)
		{
			echo CHtml::closeTag('ul')."\n";
			echo CHtml::closeTag('li')."\n";
		}
	}

	echo CHtml::openTag('li');
	echo CHtml::encode($category->title);
	$level=$category->level;
}

for($i=$level;$i;$i--)
{
	echo CHtml::closeTag('li')."\n";
	echo CHtml::closeTag('ul')."\n";
}