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1 | <?php |
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2 | |||
3 | namespace Kunstmaan\PagePartBundle\Twig\Extension; |
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4 | |||
5 | use Doctrine\ORM\EntityManager; |
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6 | use Kunstmaan\PagePartBundle\Entity\PagePartRef; |
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7 | use Kunstmaan\PagePartBundle\Helper\HasPagePartsInterface; |
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8 | use Kunstmaan\PagePartBundle\Helper\PagePartInterface; |
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9 | use Kunstmaan\PagePartBundle\Repository\PagePartRefRepository; |
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10 | use Twig\Environment; |
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11 | use Twig\Extension\AbstractExtension; |
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12 | use Twig\TwigFunction; |
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13 | |||
14 | /** |
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15 | * PagePartTwigExtension |
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16 | * |
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17 | * @final since 5.4 |
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18 | */ |
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19 | class PagePartTwigExtension extends AbstractExtension |
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20 | { |
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21 | /** |
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22 | * @var EntityManager |
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23 | */ |
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24 | protected $em; |
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25 | |||
26 | public function __construct(EntityManager $em) |
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27 | { |
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28 | $this->em = $em; |
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29 | } |
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30 | |||
31 | /** |
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32 | * @return array |
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33 | */ |
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34 | public function getFunctions() |
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35 | { |
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36 | return [ |
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37 | new TwigFunction('render_pageparts', [$this, 'renderPageParts'], ['needs_environment' => true, 'needs_context' => true, 'is_safe' => ['html']]), |
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38 | new TwigFunction('getpageparts', ['needs_environment' => true, $this, 'getPageParts']), |
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39 | new TwigFunction('has_page_parts', [$this, 'hasPageParts']), |
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40 | ]; |
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41 | } |
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42 | |||
43 | /** |
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44 | * @param array $twigContext The twig context |
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45 | * @param HasPagePartsInterface $page The page |
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46 | * @param string $contextName The pagepart context |
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47 | * @param array $parameters Some extra parameters |
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48 | * |
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49 | * @return string |
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50 | */ |
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51 | View Code Duplication | public function renderPageParts(Environment $env, array $twigContext, HasPagePartsInterface $page, $contextName = 'main', array $parameters = []) |
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52 | { |
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53 | $template = $env->load('@KunstmaanPagePart/PagePartTwigExtension/widget.html.twig'); |
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54 | /* @var $entityRepository PagePartRefRepository */ |
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55 | $pageparts = $this->getPageParts($page, $contextName); |
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56 | $newTwigContext = array_merge($parameters, [ |
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57 | 'pageparts' => $pageparts, |
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58 | 'page' => $page, |
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59 | ]); |
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60 | $newTwigContext = array_merge($newTwigContext, $twigContext); |
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61 | |||
62 | return $template->render($newTwigContext); |
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63 | } |
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64 | |||
65 | /** |
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66 | * @param HasPagePartsInterface $page The page |
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67 | * @param string $context The pagepart context |
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68 | * |
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69 | * @return PagePartInterface[] |
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70 | */ |
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71 | public function getPageParts(HasPagePartsInterface $page, $context = 'main') |
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72 | { |
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73 | /** @var $entityRepository PagePartRefRepository */ |
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74 | $entityRepository = $this->em->getRepository(PagePartRef::class); |
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75 | |||
76 | return $entityRepository->getPageParts($page, $context); |
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77 | } |
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78 | |||
79 | /** |
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80 | * @param string $context |
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81 | * |
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82 | * @return bool |
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83 | */ |
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84 | public function hasPageParts(HasPagePartsInterface $page, $context = 'main') |
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85 | { |
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86 | return $this->em->getRepository(PagePartRef::class)->hasPageParts($page, $context); |
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87 | } |
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88 | } |
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89 |
The
EntityManager
might become unusable for example if a transaction is rolled back and it gets closed. Let’s assume that somewhere in your application, or in a third-party library, there is code such as the following:If that code throws an exception and the
EntityManager
is closed. Any other code which depends on the same instance of theEntityManager
during this request will fail.On the other hand, if you instead inject the
ManagerRegistry
, thegetManager()
method guarantees that you will always get a usable manager instance.