1 | <?php |
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2 | |||
3 | namespace CWP\PDFExport\Extensions; |
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4 | |||
5 | use SilverStripe\Control\Director; |
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6 | use SilverStripe\ORM\DataExtension; |
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7 | use SilverStripe\Versioned\Versioned; |
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8 | |||
9 | class PdfExportExtension extends DataExtension |
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10 | { |
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11 | /** |
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12 | * @config |
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13 | * @var bool |
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14 | */ |
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15 | private static $pdf_export = false; |
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16 | |||
17 | /** |
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18 | * Domain to generate PDF's from, DOES not include protocol |
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19 | * i.e. google.com not http://google.com |
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20 | * @config |
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21 | * @var string |
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22 | */ |
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23 | private static $pdf_base_url = ''; |
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24 | |||
25 | /** |
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26 | * Allow custom overriding of the path to the WKHTMLTOPDF binary, in cases |
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27 | * where multiple versions of the binary are available to choose from. This |
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28 | * should be the full path to the binary (e.g. /usr/local/bin/wkhtmltopdf) |
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29 | * @see BasePage_Controller::generatePDF(); |
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30 | * |
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31 | * @config |
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32 | * @var string|null |
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33 | */ |
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34 | private static $wkhtmltopdf_binary = null; |
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35 | |||
36 | /** |
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37 | * Where to store generated PDF files |
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38 | * |
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39 | * @config |
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40 | * @var string |
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41 | */ |
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42 | private static $generated_pdf_path = 'assets/_generated_pdfs'; |
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43 | |||
44 | /** |
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45 | * Return the full filename of the pdf file, including path & extension |
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46 | */ |
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47 | public function getPdfFilename() |
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48 | { |
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49 | $baseName = sprintf('%s-%s', $this->owner->URLSegment, $this->owner->ID); |
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50 | |||
51 | $folderPath = $this->owner->config()->get('generated_pdf_path'); |
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52 | if ($folderPath[0] != '/') { |
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53 | $folderPath = BASE_PATH . '/' . $folderPath; |
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54 | } |
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55 | |||
56 | return sprintf('%s/%s.pdf', $folderPath, $baseName); |
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57 | } |
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58 | |||
59 | /** |
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60 | * Build pdf link for template. |
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61 | */ |
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62 | public function PdfLink() |
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63 | { |
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64 | if (!$this->owner->config()->get('pdf_export')) { |
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65 | return false; |
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66 | } |
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67 | |||
68 | $path = $this->getPdfFilename(); |
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69 | |||
70 | if ((Versioned::get_stage() === Versioned::LIVE) && file_exists($path)) { |
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71 | return Director::baseURL() . preg_replace('#^/#', '', Director::makeRelative($path)); |
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72 | } |
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73 | return $this->owner->Link('downloadpdf'); |
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74 | } |
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75 | |||
76 | /** |
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77 | * Remove linked pdf when publishing the page, as it would be out of date. |
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78 | */ |
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79 | public function onAfterPublish() |
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80 | { |
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81 | $filepath = $this->getPdfFilename(); |
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82 | if (file_exists($filepath)) { |
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83 | unlink($filepath); |
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84 | } |
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85 | } |
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86 | |||
87 | /** |
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88 | * Remove linked pdf when unpublishing the page, so it's no longer valid. |
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89 | */ |
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90 | public function doUnpublish() |
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91 | { |
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92 | $filepath = $this->getPdfFilename(); |
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93 | if (file_exists($filepath)) { |
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94 | unlink($filepath); |
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95 | } |
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96 | } |
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97 | } |
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98 |