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<?php |
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namespace CWP\PDFExport\Extensions; |
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use SilverStripe\Control\Director; |
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use SilverStripe\ORM\DataExtension; |
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use SilverStripe\Versioned\Versioned; |
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class PdfExportExtension extends DataExtension |
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{ |
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/** |
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* @config |
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* @var bool |
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*/ |
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private static $pdf_export = false; |
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/** |
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* Domain to generate PDF's from, DOES not include protocol |
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* i.e. google.com not http://google.com |
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* @config |
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* @var string |
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*/ |
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private static $pdf_base_url = ''; |
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/** |
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* Allow custom overriding of the path to the WKHTMLTOPDF binary, in cases |
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* where multiple versions of the binary are available to choose from. This |
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* should be the full path to the binary (e.g. /usr/local/bin/wkhtmltopdf) |
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* @see BasePage_Controller::generatePDF(); |
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* |
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* @config |
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* @var string|null |
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*/ |
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private static $wkhtmltopdf_binary = null; |
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/** |
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* Where to store generated PDF files |
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* |
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* @config |
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* @var string |
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*/ |
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private static $generated_pdf_path = 'assets/_generated_pdfs'; |
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/** |
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* Return the full filename of the pdf file, including path & extension |
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*/ |
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public function getPdfFilename() |
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{ |
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$baseName = sprintf('%s-%s', $this->owner->URLSegment, $this->owner->ID); |
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$folderPath = $this->owner->config()->get('generated_pdf_path'); |
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if ($folderPath[0] != '/') { |
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$folderPath = BASE_PATH . '/' . $folderPath; |
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} |
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return sprintf('%s/%s.pdf', $folderPath, $baseName); |
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} |
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/** |
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* Build pdf link for template. |
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*/ |
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public function PdfLink() |
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{ |
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if (!$this->owner->config()->get('pdf_export')) { |
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return false; |
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} |
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$path = $this->getPdfFilename(); |
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if ((Versioned::get_stage() === Versioned::LIVE) && file_exists($path)) { |
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return Director::baseURL() . preg_replace('#^/#', '', Director::makeRelative($path)); |
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} |
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return $this->owner->Link('downloadpdf'); |
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} |
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/** |
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* Remove linked pdf when publishing the page, as it would be out of date. |
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*/ |
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public function onAfterPublish() |
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{ |
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$filepath = $this->getPdfFilename(); |
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if (file_exists($filepath)) { |
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unlink($filepath); |
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} |
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} |
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/** |
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* Remove linked pdf when unpublishing the page, so it's no longer valid. |
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*/ |
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public function onAfterUnpublish() |
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{ |
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$filepath = $this->getPdfFilename(); |
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if (file_exists($filepath)) { |
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unlink($filepath); |
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} |
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} |
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} |
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silverstripe /
cwp-pdfexport
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