PHP code example of paulzi / yii2-nested-intervals

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

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

    

paulzi / yii2-nested-intervals example snippets

class m150722_150000_single_tree extends Migration
{
    public function up()
    {
        $tableOptions = null;
        if ($this->db->driverName === 'mysql') {
            // http://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci
            $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE=InnoDB';
        }
        $this->createTable('{{%single_tree}}', [
            'id'    => Schema::TYPE_PK,
            'lft'   => Schema::TYPE_INTEGER . ' NOT NULL',
            'rgt'   => Schema::TYPE_INTEGER . ' NOT NULL',
            'depth' => Schema::TYPE_INTEGER . ' NOT NULL',
            'name'  => Schema::TYPE_STRING . ' NOT NULL', // example field
        ], $tableOptions);
        $this->createIndex('lft', '{{%single_tree}}', ['lft', 'rgt']);
        $this->createIndex('rgt', '{{%single_tree}}', ['rgt']);
    }
}

class m150722_150100_multiple_tree extends Migration
{
    public function up()
    {
        $tableOptions = null;
        if ($this->db->driverName === 'mysql') {
            // http://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci
            $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE=InnoDB';
        }
        $this->createTable('{{%multiple_tree}}', [
            'id'    => Schema::TYPE_PK,
            'tree'  => Schema::TYPE_INTEGER . ' NULL',
            'lft'   => Schema::TYPE_INTEGER . ' NOT NULL',
            'rgt'   => Schema::TYPE_INTEGER . ' NOT NULL',
            'depth' => Schema::TYPE_INTEGER . ' NOT NULL',
            'name'  => Schema::TYPE_STRING . ' NOT NULL', // example field
        ], $tableOptions);
        $this->createIndex('lft', '{{%multiple_tree}}', ['tree', 'lft', 'rgt']);
        $this->createIndex('rgt', '{{%multiple_tree}}', ['tree', 'rgt']);
    }
}

use paulzi\nestedintervals\NestedIntervalsBehavior;

class Sample extends \yii\db\ActiveRecord
{
    public function behaviors() {
        return [
            [
                'class' => NestedIntervalsBehavior::className(),
                // 'treeAttribute' => 'tree',
            ],
        ];
    }

    public function transactions()
    {
        return [
            self::SCENARIO_DEFAULT => self::OP_ALL,
        ];
    }
}

class Sample extends \yii\db\ActiveRecord
{
    public static function find()
    {
        return new SampleQuery(get_called_class());
    }
}

use paulzi\nestedintervals\NestedIntervalsQueryTrait;

class SampleQuery extends \yii\db\ActiveQuery
{
    use NestedIntervalsQueryTrait;
}

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

$node11 = Sample::findOne(['name' => 'node 1.1']);
$parents = $node11->parents; // via relation
$parents = $node11->getParents()->all(); // via query
$parents = $node11->getParents(2)->all(); // get 2 levels of ancestors

$node11 = Sample::findOne(['name' => 'node 1.1']);
$parent = $node11->parent; // via relation
$parent = $node11->getParent()->one(); // via query

$node11 = Sample::findOne(['name' => 'node 1.1']);
$root = $node11->root; // via relation
$root = $node11->getRoot()->one(); // via query

$node11 = Sample::findOne(['name' => 'node 1.1']);
$descendants = $node11->descendants; // via relation
$descendants = $node11->getDescendants()->all(); // via query
$descendants = $node11->getDescendants(2, true)->all(); // get 2 levels of descendants and self node
$descendants = $node11->getDescendants(3, false, true)->all(); // get 3 levels of descendants in back order

$node11 = Sample::findOne(['name' => 'node 1.1']);
$tree = $node11->populateTree(); // populate all levels
$tree = $node11->populateTree(2); // populate 2 levels of descendants

$node11 = Sample::findOne(['name' => 'node 1.1']);
$children = $node11->children; // via relation
$children = $node11->getChildren()->all(); // via query

$node11 = Sample::findOne(['name' => 'node 1.1']);
$leaves = $node11->leaves; // via relation
$leaves = $node11->getLeaves(2)->all(); // get 2 levels of leaves via query

$node11 = Sample::findOne(['name' => 'node 1.1']);
$next = $node11->next; // via relation
$next = $node11->getNext()->one(); // via query

$node11 = Sample::findOne(['name' => 'node 1.1']);
$prev = $node11->prev; // via relation
$prev = $node11->getPrev()->one(); // via query

$node1 = Sample::findOne(['name' => 'node 1']);
$node11 = Sample::findOne(['name' => 'node 1.1']);
$node11->isRoot() - return true, if node is root
$node11->isLeaf() - return true, if node is leaf
$node11->isChildOf($node1) - return true, if node11 is child of $node1

$node11 = new Sample();
$node11->name = 'node 1.1';
$node11->makeRoot()->save();

$node1 = Sample::findOne(['name' => 'node 1']);
$node11 = new Sample();
$node11->name = 'node 1.1';
$node11->prependTo($node1)->save(); // inserting new node

$node11 = Sample::findOne(['name' => 'node 1.1']);
$node12 = Sample::findOne(['name' => 'node 1.2']);
$node12->appendTo($node11)->save(); // move existing node

$node13 = Sample::findOne(['name' => 'node 1.3']);
$node12 = new Sample();
$node12->name = 'node 1.2';
$node12->insertBefore($node13)->save(); // inserting new node

$node13 = Sample::findOne(['name' => 'node 1.3']);
$node14 = Sample::findOne(['name' => 'node 1.4']);
$node14->insertAfter($node13)->save(); // move existing node

$node11 = Sample::findOne(['name' => 'node 1.1']);
$node11->delete(); // delete node, children come up to the parent
$node11->deleteWithChildren(); // delete node and all descendants 

$node11 = Sample::findOne(['name' => 'node 1.1']);
$node11->optimize();