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<?php |
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/* |
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* This file is part of Jitamin. |
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* |
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* Copyright (C) Jitamin Team |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Jitamin\Foundation; |
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use PicoDb\Table; |
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use Pimple\Container; |
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/** |
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* Paginator helper. |
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*/ |
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class Paginator |
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{ |
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/** |
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* Container instance. |
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* |
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* @var \Pimple\Container |
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*/ |
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private $container; |
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/** |
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* Total number of items. |
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* |
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* @var int |
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*/ |
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private $total = 0; |
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/** |
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* Page number. |
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* |
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* @var int |
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*/ |
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private $page = 1; |
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/** |
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* Offset. |
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* |
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* @var int |
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*/ |
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private $offset = 0; |
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/** |
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* Limit. |
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* |
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* @var int |
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*/ |
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private $limit = 0; |
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/** |
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* Sort by this column. |
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* |
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* @var string |
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*/ |
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private $order = ''; |
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/** |
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* Sorting direction. |
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* |
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* @var string |
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*/ |
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private $direction = 'ASC'; |
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/** |
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* Slice of items. |
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* |
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* @var array |
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*/ |
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private $items = []; |
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/** |
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* PicoDb Table instance. |
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* |
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* @var \Picodb\Table |
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*/ |
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private $query = null; |
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/** |
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* Controller name. |
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* |
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* @var string |
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*/ |
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private $controller = ''; |
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/** |
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* Action name. |
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* |
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* @var string |
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*/ |
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private $action = ''; |
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/** |
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* Url params. |
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* |
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* @var array |
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*/ |
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private $params = []; |
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/** |
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* Constructor. |
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* |
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* @param \Pimple\Container $container |
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*/ |
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public function __construct(Container $container) |
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{ |
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$this->container = $container; |
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} |
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/** |
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* Set a PicoDb query. |
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* |
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* @param \PicoDb\Table |
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* |
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* @return Paginator |
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*/ |
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public function setQuery(Table $query) |
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{ |
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$this->query = $query; |
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$this->total = $this->query->count(); |
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return $this; |
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} |
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/** |
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* Execute a PicoDb query. |
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* |
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* @return array |
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*/ |
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public function executeQuery() |
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{ |
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if ($this->query !== null) { |
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return $this->query |
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->offset($this->offset) |
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->limit($this->limit) |
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->orderBy($this->order, $this->direction) |
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->findAll(); |
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} |
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return []; |
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} |
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/** |
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* Set url parameters. |
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* |
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* @param string $controller |
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* @param string $action |
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* @param array $params |
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* |
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* @return Paginator |
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*/ |
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public function setUrl($controller, $action, array $params = []) |
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{ |
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$this->controller = $controller; |
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$this->action = $action; |
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$this->params = $params; |
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return $this; |
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} |
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/** |
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* Add manually items. |
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* |
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* @param array $items |
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* |
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* @return Paginator |
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*/ |
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public function setCollection(array $items) |
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{ |
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$this->items = $items; |
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return $this; |
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} |
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/** |
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* Return the items. |
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* |
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* @return array |
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*/ |
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public function getCollection() |
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{ |
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return $this->items ?: $this->executeQuery(); |
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} |
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/** |
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* Set the total number of items. |
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* |
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* @param int $total |
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* |
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* @return Paginator |
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*/ |
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public function setTotal($total) |
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{ |
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$this->total = $total; |
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return $this; |
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} |
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/** |
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* Get the total number of items. |
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* |
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* @return int |
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*/ |
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public function getTotal() |
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{ |
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return $this->total; |
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} |
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/** |
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* Set the default page number. |
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* |
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* @param int $page |
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* |
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* @return Paginator |
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*/ |
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public function setPage($page) |
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{ |
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$this->page = $page; |
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return $this; |
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} |
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/** |
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* Get the number of current page. |
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* |
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* @return int |
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*/ |
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public function getPage() |
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{ |
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return $this->page; |
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} |
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/** |
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* Get the total number of pages. |
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* @return int |
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*/ |
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public function getPageTotal() |
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{ |
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return ceil($this->getTotal() / $this->getMax()); |
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} |
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/** |
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* Set the default column order. |
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* |
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* @param string $order |
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* |
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* @return Paginator |
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*/ |
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public function setOrder($order) |
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{ |
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$this->order = $order; |
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return $this; |
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} |
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/** |
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* Set the default sorting direction. |
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* |
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* @param string $direction |
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* |
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* @return Paginator |
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*/ |
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public function setDirection($direction) |
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{ |
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$this->direction = $direction; |
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return $this; |
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} |
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/** |
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* Set the maximum number of items per page. |
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* |
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* @param int $limit |
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* |
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* @return Paginator |
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*/ |
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public function setMax($limit) |
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{ |
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$this->limit = $limit; |
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return $this; |
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} |
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/** |
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* Get the maximum number of items per page. |
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* |
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* @return int |
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*/ |
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public function getMax() |
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{ |
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return $this->limit; |
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} |
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/** |
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* Return true if the collection is empty. |
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* |
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* @return bool |
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*/ |
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public function isEmpty() |
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{ |
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return $this->total === 0; |
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} |
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/** |
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* Execute the offset calculation only if the $condition is true. |
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* |
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* @param bool $condition |
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* |
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* @return Paginator |
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*/ |
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public function calculateOnlyIf($condition) |
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{ |
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if ($condition) { |
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$this->calculate(); |
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} |
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return $this; |
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} |
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/** |
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* Calculate the offset value accoring to url params and the page number. |
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* |
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* @return Paginator |
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*/ |
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public function calculate() |
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{ |
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$this->page = $this->container['request']->getIntegerParam('page', 1); |
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$this->direction = $this->container['request']->getStringParam('direction', $this->direction); |
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$this->order = $this->container['request']->getStringParam('order', $this->order); |
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if ($this->page < 1) { |
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$this->page = 1; |
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} |
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$this->offset = (int) (($this->page - 1) * $this->limit); |
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return $this; |
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} |
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/** |
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* Generation pagination links. |
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* |
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* @return string |
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*/ |
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public function toHtml() |
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{ |
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$html = ''; |
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if (!$this->hasNothingtoShow()) { |
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$html .= '<div class="pagination">'; |
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$html .= $this->generatPageShowing(); |
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$html .= $this->generatePreviousLink(); |
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$html .= $this->generateNextLink(); |
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$html .= '</div>'; |
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} |
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return $html; |
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} |
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/** |
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* Magic method to output pagination links. |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->toHtml(); |
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} |
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/** |
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* Column sorting. |
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* |
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* @param string $label Column title |
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* @param string $column SQL column name |
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* |
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* @return string |
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*/ |
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public function order($label, $column) |
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{ |
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$prefix = ''; |
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$direction = 'ASC'; |
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if ($this->order === $column) { |
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$prefix = $this->direction === 'DESC' ? '▼ ' : '▲ '; |
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$direction = $this->direction === 'DESC' ? 'ASC' : 'DESC'; |
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} |
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return $prefix.$this->container['helper']->url->link( |
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$label, |
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$this->controller, |
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$this->action, |
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$this->getUrlParams($this->page, $column, $direction) |
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); |
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} |
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/** |
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* Get url params for link generation. |
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* |
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* @param int $page |
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* @param string $order |
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* @param string $direction |
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* |
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* @return string |
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*/ |
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protected function getUrlParams($page, $order, $direction) |
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{ |
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$params = [ |
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'page' => $page, |
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'order' => $order, |
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'direction' => $direction, |
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]; |
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return array_merge($this->params, $params); |
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} |
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|
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/** |
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* Generate the previous link. |
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* |
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* @return string |
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*/ |
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protected function generatePreviousLink() |
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{ |
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$html = '<span class="pagination-previous">'; |
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|
432
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if ($this->offset > 0) { |
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$html .= $this->container['helper']->url->link( |
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'« '.t('Previous'), |
435
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|
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$this->controller, |
436
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|
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$this->action, |
437
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|
$this->getUrlParams($this->page - 1, $this->order, $this->direction), |
438
|
|
|
false, |
439
|
|
|
'btn btn-info' |
440
|
|
|
); |
441
|
|
|
} else { |
442
|
|
|
$html .= '<span class="btn btn-default">« '.t('Previous').'</span>'; |
443
|
|
|
} |
444
|
|
|
|
445
|
|
|
$html .= '</span>'; |
446
|
|
|
|
447
|
|
|
return $html; |
448
|
|
|
} |
449
|
|
|
|
450
|
|
|
/** |
451
|
|
|
* Generate the next link. |
452
|
|
|
* |
453
|
|
|
* @return string |
454
|
|
|
*/ |
455
|
|
|
protected function generateNextLink() |
456
|
|
|
{ |
457
|
|
|
$html = '<span class="pagination-next">'; |
458
|
|
|
|
459
|
|
|
if (($this->total - $this->offset) > $this->limit) { |
460
|
|
|
$html .= $this->container['helper']->url->link( |
461
|
|
|
t('Next').' »', |
462
|
|
|
$this->controller, |
463
|
|
|
$this->action, |
464
|
|
|
$this->getUrlParams($this->page + 1, $this->order, $this->direction), |
465
|
|
|
false, |
466
|
|
|
'btn btn-info' |
467
|
|
|
); |
468
|
|
|
} else { |
469
|
|
|
$html .= '<span class="btn btn-default">'.t('Next').' »</span>'; |
470
|
|
|
} |
471
|
|
|
|
472
|
|
|
$html .= '</span>'; |
473
|
|
|
|
474
|
|
|
return $html; |
475
|
|
|
} |
476
|
|
|
|
477
|
|
|
/** |
478
|
|
|
* Generate the page showing. |
479
|
|
|
* |
480
|
|
|
* @return string |
481
|
|
|
*/ |
482
|
|
|
protected function generatPageShowing() |
483
|
|
|
{ |
484
|
|
|
return '<span class="pagination-showing">'.t('Showing %d-%d of %d', (($this->getPage() - 1) * $this->getMax() + 1), min($this->getTotal(), $this->getPage() * $this->getMax()), $this->getTotal()).'</span>'; |
485
|
|
|
} |
486
|
|
|
|
487
|
|
|
/** |
488
|
|
|
* Return true if there is no pagination to show. |
489
|
|
|
* |
490
|
|
|
* @return bool |
491
|
|
|
*/ |
492
|
|
|
protected function hasNothingtoShow() |
493
|
|
|
{ |
494
|
|
|
return $this->offset === 0 && ($this->total - $this->offset) <= $this->limit; |
495
|
|
|
} |
496
|
|
|
} |
497
|
|
|
|