PHP code example of djvibegga / yii2-nested-set-behavior

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

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

    

djvibegga / yii2-nested-set-behavior example snippets

class Category extends ActiveRecord
{
	public function behaviors() {
		return [
			[
				'class' => NestedSet::className(),
			],
		];
	}

	public static function createQuery()
	{
		return new CategoryQuery(['modelClass' => get_called_class()]);
	}
}

class CategoryQuery extends ActiveQuery
{
	public function behaviors() {
		return [
			[
				'class' => NestedSetQuery::className(),
			],
		];
	}
}

$roots = Category::find()->roots()->all();

$category = Category::find(1);
$descendants = $category->descendants()->all();

$category = Category::find(1);
$descendants = $category->children()->all();

$category = Category::find(5);
$ancestors = $category->ancestors()->all();

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

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

Category::find()->addOrderBy('lft')->all();

Category::find()->where('root = ?', [$root_id])->addOrderBy('lft')->all();

$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::find(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::find(2);
$category1->appendTo($root);
$category2->insertAfter($category1);
$category3->prependTo($root);

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

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

foreach([$audi, $ford, $mercedes] as $category) {
	$category->moveAsLast($cars);
}

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

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

$categories = Category::find()->addOrderBy('lft')->all();
$level = 0;

foreach ($categories as $n => $category)
{
	if ($category->level == $level) {
		echo Html::endTag('li') . "\n";
	} elseif ($category->level > $level) {
		echo Html::beginTag('ul') . "\n";
	} else {
		echo Html::endTag('li') . "\n";

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

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

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

sh
php composer.phar