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refactor(Pager): Separate Pager as Trait
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| <?php | ||
| /** | ||
| * Created by PhpStorm. | ||
| * User: Rhilip | ||
| * Date: 8/7/2019 | ||
| * Time: 7:37 PM | ||
| */ | ||
|
|
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| namespace Rid\Validators; | ||
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| Trait PagerTrait | ||
| { | ||
| public $page; | ||
| public $limit; // pecPage | ||
| public $data; | ||
|
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| protected $offset; | ||
| protected $total; | ||
|
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| static $default_page = 1; | ||
| static $default_limit = 50; | ||
| static $max_limit = 50; | ||
| static $data_source = 'remote'; | ||
|
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| protected $pager_data_total; | ||
| protected $pager_data; | ||
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| public static function defaultData(){ | ||
| return [ | ||
| 'page' => static::$default_page, | ||
| 'limit' => static::$default_limit | ||
| ]; | ||
| } | ||
|
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| public static function inputRules() | ||
| { | ||
| return [ | ||
| 'page' => 'Integer', 'limit' => 'Integer' | ||
| ]; | ||
| } | ||
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| public static function callbackRules() | ||
| { | ||
| return ['checkPager']; | ||
| } | ||
|
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| /** | ||
| * @return mixed | ||
| */ | ||
| public function getPage() | ||
| { | ||
| return $this->page; | ||
| } | ||
|
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| /** | ||
| * @return mixed | ||
| */ | ||
| public function getLimit() | ||
| { | ||
| return $this->limit; | ||
| } | ||
|
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| /** | ||
| * @return mixed | ||
| */ | ||
| public function getOffset() | ||
| { | ||
| return $this->offset; | ||
| } | ||
|
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| /** | ||
| * @return mixed | ||
| */ | ||
| public function getTotal() | ||
| { | ||
| return $this->total; | ||
| } | ||
|
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| protected function checkPager() | ||
| { | ||
| $limit = $this->getData('limit', static::$default_limit); | ||
| if ($limit > static::$max_limit) $limit = static::$max_limit; | ||
| $page = $this->getData('page', static::$default_page); | ||
|
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| $this->setData(['limit' => $limit, 'page' => $page]); | ||
|
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| $this->total = $this->getDataTotal(); | ||
| $this->offset = ($page - 1) * $limit; | ||
|
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| // Quick return empty array when offset is much bigger than total, So we needn't hit remote or local data | ||
| if ($this->offset > $this->total) $this->pager_data = []; | ||
| } | ||
|
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| final public function getDataTotal(): int | ||
| { | ||
| if (is_null($this->pager_data_total)) { | ||
| if (static::$data_source == 'remote') $this->pager_data_total = $this->getRemoteTotal(); | ||
| else $this->pager_data_total = count($this->getData('data', [])); | ||
| } | ||
| return $this->pager_data_total; | ||
| } | ||
|
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| protected function getRemoteTotal(): int | ||
| { | ||
| throw new \RuntimeException('function "getRemoteTotal()" not implemented.'); | ||
| } | ||
|
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| final public function getPagerData(): array | ||
| { | ||
| if (is_null($this->pager_data)) { | ||
| if (static::$data_source == 'remote') $this->pager_data = $this->getRemoteData(); | ||
| else $this->pager_data = array_slice($this->getData('data', []), $this->offset, $this->limit); | ||
| } | ||
| return $this->pager_data; | ||
| } | ||
|
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| protected function getRemoteData(): array | ||
| { | ||
| throw new \RuntimeException('function "getRemoteData()" not implemented.'); | ||
| } | ||
| } |