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<?php |
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namespace Encore\Admin\Grid\Concerns; |
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use Encore\Admin\Grid; |
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use Encore\Admin\Grid\Column; |
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use Encore\Admin\Grid\Exporter; |
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use Encore\Admin\Grid\Exporters\AbstractExporter; |
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trait CanExportGrid |
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{ |
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/** |
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* Export driver. |
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* |
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* @var string |
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*/ |
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protected $exporter; |
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/** |
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* Handle export request. |
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* |
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* @param bool $forceExport |
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*/ |
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protected function handleExportRequest($forceExport = false) |
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{ |
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if (!$scope = request(Exporter::$queryName)) { |
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return; |
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} |
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// clear output buffer. |
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if (ob_get_length()) { |
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ob_end_clean(); |
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} |
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$this->disablePagination(); |
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if ($forceExport) { |
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$this->getExporter($scope)->export(); |
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} |
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} |
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/** |
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* @param string $scope |
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* |
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* @return AbstractExporter |
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*/ |
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protected function getExporter($scope) |
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{ |
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return (new Exporter($this))->resolve($this->exporter)->withScope($scope); |
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} |
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/** |
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* Set exporter driver for Grid to export. |
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* |
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* @param $exporter |
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* |
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* @return $this |
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*/ |
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public function exporter($exporter) |
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{ |
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$this->exporter = $exporter; |
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return $this; |
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} |
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/** |
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* Get the export url. |
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* |
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* @param int $scope |
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* @param null $args |
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* |
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* @return string |
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*/ |
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public function getExportUrl($scope = 1, $args = null) |
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{ |
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$input = array_merge(request()->all(), Exporter::formatExportQuery($scope, $args)); |
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if ($constraints = $this->model()->getConstraints()) { |
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$input = array_merge($input, $constraints); |
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} |
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return $this->resource() . '?' . http_build_query($input); |
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} |
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/** |
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* If grid show export btn. |
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* |
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* @return bool |
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*/ |
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public function showExportBtn() |
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{ |
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return $this->option('show_exporter'); |
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} |
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/** |
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* Disable export. |
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* |
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* @return $this |
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*/ |
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public function disableExport(bool $disable = true) |
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{ |
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return $this->option('show_exporter', !$disable); |
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} |
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/** |
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* Render export button. |
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* |
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* @return string |
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*/ |
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public function renderExportButton() |
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{ |
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return (new Grid\Tools\ExportButton($this))->render(); |
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} |
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/** |
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* @param \Closure $callback |
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*/ |
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public function export(\Closure $callback) |
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{ |
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if (!$scope = request(Exporter::$queryName)) { |
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return; |
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} |
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$this->getExporter($scope)->setCallback($callback); |
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return $this; |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.