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<?php |
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namespace Terranet\Administrator\Services; |
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class Sorter |
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{ |
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/** @var array */ |
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protected $sortable; |
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/** @var null|string */ |
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protected $element; |
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/** @var null|string */ |
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protected $direction; |
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/** |
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* Sorter constructor. |
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* |
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* @param array $sortable |
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* @param string $sortDir |
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*/ |
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public function __construct(array $sortable = [], string $sortDir = 'desc') |
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{ |
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$this->sortable = $sortable; |
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$this->element = $this->input('sort_by', $this->first()); |
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$this->direction = $this->input('sort_dir', $sortDir); |
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} |
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/** |
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* Build sortable url. |
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* |
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* @param string $element |
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* |
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* @return string |
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*/ |
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public function makeUrl(string $element) |
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{ |
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return \admin\helpers\qsRoute(null, [ |
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'sort_by' => $element, |
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'sort_dir' => $this->proposeDirection($element), |
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]); |
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} |
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/** |
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* Get current sorting direction. |
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* |
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* @return null|string |
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*/ |
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public function direction(): ?string |
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{ |
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return $this->direction; |
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} |
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/** |
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* Get current sorting element. |
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* |
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* @return null|string |
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*/ |
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public function element(): ?string |
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{ |
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return $this->element ?: $this->first(); |
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} |
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/** |
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* Check if a column is sortable. |
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* |
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* @param string $column |
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* |
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* @return bool |
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*/ |
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public function canSortBy(string $column): bool |
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{ |
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return array_key_exists($column, $this->sortable) || \in_array($column, $this->sortable, true); |
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} |
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/** |
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* Retrieve first sortable element. |
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* |
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* @return mixed |
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*/ |
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protected function first() |
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{ |
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foreach ($this->sortable as $key => $value) { |
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if (is_numeric($key)) { |
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return $value; |
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} |
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return $key; |
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} |
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return null; |
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} |
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/** |
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* Propose new sort direction for element. |
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* |
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* @param $forElement |
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* |
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* @return string |
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*/ |
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protected function proposeDirection($forElement) |
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{ |
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$sortDir = $this->direction(); |
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return $forElement === $this->element() ? $this->reverseDirection($sortDir) : $sortDir; |
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} |
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/** |
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* Reverse sorting direction. |
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* |
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* @param string $direction |
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* |
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* @return string |
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*/ |
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protected function reverseDirection(string $direction) |
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{ |
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return 'asc' === strtolower($direction) ? 'desc' : 'asc'; |
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} |
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/** |
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* @param $key |
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* @param null $default |
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* |
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* @return mixed |
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*/ |
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protected function input($key, $default = null) |
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{ |
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return app('request')->input($key, $default); |
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} |
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} |
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adminarchitect /
core
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