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<?php namespace Arcanedev\LaravelNestedSet\Utilities; |
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use Arcanedev\LaravelNestedSet\NodeTrait; |
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use Illuminate\Database\Schema\Blueprint; |
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/** |
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* Class NestedSet |
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* |
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* @package Arcanedev\LaravelNestedSet\Utilities |
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* @author ARCANEDEV <[email protected]> |
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*/ |
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class NestedSet |
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{ |
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/* ----------------------------------------------------------------- |
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| Constants |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* The name of default lft column. |
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*/ |
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const LFT = '_lft'; |
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/** |
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* The name of default rgt column. |
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*/ |
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const RGT = '_rgt'; |
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/** |
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* The name of default parent id column. |
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*/ |
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const PARENT_ID = 'parent_id'; |
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/** |
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* Insert direction. |
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*/ |
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const BEFORE = 1; |
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/** |
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* Insert direction. |
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*/ |
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const AFTER = 2; |
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/* ----------------------------------------------------------------- |
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| Getters & Setters |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* Get a list of default columns. |
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* |
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* @return array |
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*/ |
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public static function getDefaultColumns() |
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{ |
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return [self::LFT, self::RGT, self::PARENT_ID]; |
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} |
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/* ----------------------------------------------------------------- |
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| Migration Methods |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* Add default nested set columns to the table. Also create an index. |
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* |
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* @param \Illuminate\Database\Schema\Blueprint $table |
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*/ |
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public static function columns(Blueprint $table) |
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{ |
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216 |
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$table->unsignedInteger(self::LFT); |
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$table->unsignedInteger(self::RGT); |
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$table->unsignedInteger(self::PARENT_ID)->nullable(); |
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$table->index(self::getDefaultColumns()); |
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216 |
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} |
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/** |
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* Drop NestedSet columns. |
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* |
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* @param \Illuminate\Database\Schema\Blueprint $table |
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*/ |
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public static function dropColumns(Blueprint $table) |
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{ |
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$columns = self::getDefaultColumns(); |
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$table->dropIndex($columns); |
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$table->dropColumn($columns); |
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} |
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/* ----------------------------------------------------------------- |
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| Check Methods |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* Replaces instanceof calls for this trait. |
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* |
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* @param mixed $node |
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* |
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* @return bool |
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*/ |
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public static function isNode($node) |
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{ |
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return is_object($node) && in_array(NodeTrait::class, (array) $node); |
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} |
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} |
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ARCANEDEV /
LaravelNestedSet
